2009 Vol. 24, No. 2
Display Method:
2009, 24(2): 91-95.
Abstract:
In order to improve yield of the ratoon rice,differentiation and growth of the stem auxiliary buds on different nodes,development traits of the ear grain and morphology of the stem organs were studied.The results indicated that(a) the differentiation of rachis primordial of the stem auxiliary buds began from bottom up before the mother stem heading;(b) after the mother stem heading,the differentiation of primary or secondary rachis branch occurred in a top down order;(c) under the apical dominance,the stem auxiliary buds began to germinate 3d before the mother stem ripened;and(d) the panicle bearing tiller rate decreased and the grains per spike reduced to one-third of the mother stem,as the node moving downward due to congenital deficiencies.Thus,boosting germination rate of the stem auxiliary buds in the lower nodes while retaining upper buds at initial harvest could improve the yield.By forming 1.70-2.00 folds spikes more than the initial rice,the yield could be increased.The converse 3rd pulvinus was 8-16 cm higher than converse second buds,and its height could be used as a quick morphological index for optimum stubble height of the mother stem.
In order to improve yield of the ratoon rice,differentiation and growth of the stem auxiliary buds on different nodes,development traits of the ear grain and morphology of the stem organs were studied.The results indicated that(a) the differentiation of rachis primordial of the stem auxiliary buds began from bottom up before the mother stem heading;(b) after the mother stem heading,the differentiation of primary or secondary rachis branch occurred in a top down order;(c) under the apical dominance,the stem auxiliary buds began to germinate 3d before the mother stem ripened;and(d) the panicle bearing tiller rate decreased and the grains per spike reduced to one-third of the mother stem,as the node moving downward due to congenital deficiencies.Thus,boosting germination rate of the stem auxiliary buds in the lower nodes while retaining upper buds at initial harvest could improve the yield.By forming 1.70-2.00 folds spikes more than the initial rice,the yield could be increased.The converse 3rd pulvinus was 8-16 cm higher than converse second buds,and its height could be used as a quick morphological index for optimum stubble height of the mother stem.
2009, 24(2): 96-103.
Abstract:
An analysis to determine the correlations of the grain quality traits of different hybrid rice in different years was conducted in various regions in Fujian from 2003 to 2005.Twelve indices were employed for the quality evaluation on 282 hybrid rice varieties,including early indica,medium season indica and late indica.Significant positive or negative correlations were detected between(a) brown rice rate and milled rice rate,(b) chalky rice rate and chalkiness degree,(c) gel consistency and quality indices,(d) chalky rice rate and transparency,(e) chalky rice rate and quality indices,and(f) amylose content and quality indices in the 3 rice types;and,also between(a) chalky rice rate and amylose content in early and medium season hybrid rice,(b) gel consistency and amylose content in early and late hybrid rice,and(c) head milled rice rate and grain length of medium and late hybrid rice.It was also found that the correlations among 9 traits were significant and stable regardless of year,rice types or varieties.The information might be of value in the breeding of hybrid rice.
An analysis to determine the correlations of the grain quality traits of different hybrid rice in different years was conducted in various regions in Fujian from 2003 to 2005.Twelve indices were employed for the quality evaluation on 282 hybrid rice varieties,including early indica,medium season indica and late indica.Significant positive or negative correlations were detected between(a) brown rice rate and milled rice rate,(b) chalky rice rate and chalkiness degree,(c) gel consistency and quality indices,(d) chalky rice rate and transparency,(e) chalky rice rate and quality indices,and(f) amylose content and quality indices in the 3 rice types;and,also between(a) chalky rice rate and amylose content in early and medium season hybrid rice,(b) gel consistency and amylose content in early and late hybrid rice,and(c) head milled rice rate and grain length of medium and late hybrid rice.It was also found that the correlations among 9 traits were significant and stable regardless of year,rice types or varieties.The information might be of value in the breeding of hybrid rice.
2009, 24(2): 104-112.
Abstract:
Data collected from the joint regional trials on the late hybrid rice from 1996 to 2007 were analyzed to determine the correlation among yield-related traits and the rice genotype and environmental factors.The trials were held in 6 Longyan areas that constituted different ecological conditions-Xinluo,Changting,Liancheng,Shanghang,Wuping and Zhangping.Variations on 9 traits,including yield,growth period,effective ear,plant height,spikete length,total grains per spikete,filled grains per spikete,seed setting rate and 1000-grain weight,were measured.The data were subjected to AMMI and corresponding statistical analysis.The results indicated that genotype and genotype-environment interaction(G譋) had a significant effect on the 9 traits.Among the traits,(a) none was found to be controlled by genotype alone;(b) the yield,plant high,effective ear,growth period,spikete length and total grains per spikete were mainly controlled by the environmental factors;and(c) the seed setting rate,filled grains per spikete and 1000-grain weight were largely affected by genotype-environmental interaction.The growth period,1000-grain weight,effective ear and spikete length were most stable followed by the seed setting rate and plant height,and the filled grains per spikete and total grains per spikete,while the yield was least stable.The yield fluctuated as it was greatly affected by the cultivation environment and the interactions between genotype and environment.
Data collected from the joint regional trials on the late hybrid rice from 1996 to 2007 were analyzed to determine the correlation among yield-related traits and the rice genotype and environmental factors.The trials were held in 6 Longyan areas that constituted different ecological conditions-Xinluo,Changting,Liancheng,Shanghang,Wuping and Zhangping.Variations on 9 traits,including yield,growth period,effective ear,plant height,spikete length,total grains per spikete,filled grains per spikete,seed setting rate and 1000-grain weight,were measured.The data were subjected to AMMI and corresponding statistical analysis.The results indicated that genotype and genotype-environment interaction(G譋) had a significant effect on the 9 traits.Among the traits,(a) none was found to be controlled by genotype alone;(b) the yield,plant high,effective ear,growth period,spikete length and total grains per spikete were mainly controlled by the environmental factors;and(c) the seed setting rate,filled grains per spikete and 1000-grain weight were largely affected by genotype-environmental interaction.The growth period,1000-grain weight,effective ear and spikete length were most stable followed by the seed setting rate and plant height,and the filled grains per spikete and total grains per spikete,while the yield was least stable.The yield fluctuated as it was greatly affected by the cultivation environment and the interactions between genotype and environment.
2009, 24(2): 113-116.
Abstract:
Greens Komatsuna's alloplasmic,cytoplasmic male-sterility line,CMS08-6,was obtained at several generations through backcrossing and selection using Chinese cabbage alloplasmic,cytoplasmic male-sterility CMS22-3 as the female parent and a different self-bred line of Greens Komatsuna as the male parent.The maintenance line was 90-6.CMS08-6 was characterized for normal growing,disease resistance,good agronomy characteristics and suitability for hybridization.Its hybridized CMS08-6?87-6 showed excellent results on the demonstration trial.
Greens Komatsuna's alloplasmic,cytoplasmic male-sterility line,CMS08-6,was obtained at several generations through backcrossing and selection using Chinese cabbage alloplasmic,cytoplasmic male-sterility CMS22-3 as the female parent and a different self-bred line of Greens Komatsuna as the male parent.The maintenance line was 90-6.CMS08-6 was characterized for normal growing,disease resistance,good agronomy characteristics and suitability for hybridization.Its hybridized CMS08-6?87-6 showed excellent results on the demonstration trial.
2009, 24(2): 117-121.
Abstract:
A comprehensive analysis was conducted using the gray system theory to determine the correlation between the climatic low temperature and the banana cold injury and yield reduction in Yunxiao county in 1999.The highest correlation between them was found to be the number of days when the daily minimum temperature was below 5.0 ℃ in every sliding five days.Thus,the following recommendations were submitted for the prevention of banana cold injury:(a) map the planting areas based on the meteorological data;(b) disseminate cold injury prevention information to the farmers;(c) emphasize prevention during the early growing stage;(d) improve plant's low-temperature resistance by increasing nutrients reserve;and(e) apply water spraying,heat fumigation and/or fruit-bagging at time of broadcasted cold spells to minimize the damage.
A comprehensive analysis was conducted using the gray system theory to determine the correlation between the climatic low temperature and the banana cold injury and yield reduction in Yunxiao county in 1999.The highest correlation between them was found to be the number of days when the daily minimum temperature was below 5.0 ℃ in every sliding five days.Thus,the following recommendations were submitted for the prevention of banana cold injury:(a) map the planting areas based on the meteorological data;(b) disseminate cold injury prevention information to the farmers;(c) emphasize prevention during the early growing stage;(d) improve plant's low-temperature resistance by increasing nutrients reserve;and(e) apply water spraying,heat fumigation and/or fruit-bagging at time of broadcasted cold spells to minimize the damage.
2009, 24(2): 122-125.
Abstract:
The megasporogenesis,microsporogenesis and the development of female and male gametophyte of Elaeagnus conferta Roxb.were studied.The results showed that the microsporogenesis rate was higher than megasporogenesis rate.The microsporogenesis had completed meiosis I,while the megasporogenesis was still in the archesporial cell stage.The macrospore development quickened after fertilization,and finished within 7d.The mature pollen grains were 3-celled,and the tapetum belonged to the secretory type.The characteristics of the female gametophyte development were: anatropal ovule,basal placenta,thick nucellar,two integument,archesporial cells grown directly into megaspore mother cells,early degeneration of antipodal cell,and the development of the polygonum type embryo sac.
The megasporogenesis,microsporogenesis and the development of female and male gametophyte of Elaeagnus conferta Roxb.were studied.The results showed that the microsporogenesis rate was higher than megasporogenesis rate.The microsporogenesis had completed meiosis I,while the megasporogenesis was still in the archesporial cell stage.The macrospore development quickened after fertilization,and finished within 7d.The mature pollen grains were 3-celled,and the tapetum belonged to the secretory type.The characteristics of the female gametophyte development were: anatropal ovule,basal placenta,thick nucellar,two integument,archesporial cells grown directly into megaspore mother cells,early degeneration of antipodal cell,and the development of the polygonum type embryo sac.
2009, 24(2): 126-131.
Abstract:
Shoot tips of Oncidium were used as the explants to study the effect of some key factors on the induction,propagation and rooting of multiple shoots in Oncidium.The factors studied included the culture media(i.e.,MS,1/2MS and 1/2 N6),phytohormone(i.e.,6-BA and NAA) application and culture conditions(i.e.,organic additives,sugar and culture stages).From the results it was hoped that the core technology of Oncidium regeneration using its multiple shoots could be established.It was found that(a) the medium containing 1/2MS + 6-BA2.0mg•L-1 + NAA 0.1mg•L-1 was superior for the induction of multiple shoots from shoot tips,with a rate of 84.6%;(b) preferable propagation of multiple shoots was achieved on the medium containing MS + 6-BA 2.0mg•L-1 + NAA 0.1mg•L-1 + sugar 30g•L-1,with a 5.5 propagation coefficient;(c) test-tube plantlets of 2.0-3.0cm height were the optimal culture materials for the propagation;and(d) 100% rooting rate was obtained on the medium containing 1/2MS + IBA 0.5mg•L-1 + apple juice 100g•L-1+ activated carbon 0.5g•L-1 + sugar 20g•L-1.
Shoot tips of Oncidium were used as the explants to study the effect of some key factors on the induction,propagation and rooting of multiple shoots in Oncidium.The factors studied included the culture media(i.e.,MS,1/2MS and 1/2 N6),phytohormone(i.e.,6-BA and NAA) application and culture conditions(i.e.,organic additives,sugar and culture stages).From the results it was hoped that the core technology of Oncidium regeneration using its multiple shoots could be established.It was found that(a) the medium containing 1/2MS + 6-BA2.0mg•L-1 + NAA 0.1mg•L-1 was superior for the induction of multiple shoots from shoot tips,with a rate of 84.6%;(b) preferable propagation of multiple shoots was achieved on the medium containing MS + 6-BA 2.0mg•L-1 + NAA 0.1mg•L-1 + sugar 30g•L-1,with a 5.5 propagation coefficient;(c) test-tube plantlets of 2.0-3.0cm height were the optimal culture materials for the propagation;and(d) 100% rooting rate was obtained on the medium containing 1/2MS + IBA 0.5mg•L-1 + apple juice 100g•L-1+ activated carbon 0.5g•L-1 + sugar 20g•L-1.
2009, 24(2): 132-136.
Abstract:
In order to obtain highly purified soft-shell turtle iridovirus(STIV) for immunological studies,3 methods were investigated.The purified virus was analyzed to certify its purity and protein structure.Results indicated an impurity and low recovery rate in the process applying two freezing-thawing cycles followed by differential centrifugation.Furthermore,the electron microscopic observation on the virus was difficult.On the other hand,by freezing-thawing the virus culture followed by magnetic stirring,ultrasonication and differential centrifugation,the virus recovery rate was improved.However,the virus structure was damaged.Alternatively,virus culture was concentrated by centrifugation,homogenization,magnetic stirring and differential centrifugation,in that order,and followed by sucrose density gradient centrifugation.The most satisfactory result was finally obtained.The virus particles collected could be observed in 30%-40%,40%-50% or 50%-60% sucrose density fractions.The most abundant and intact virions were seen in the 50%-60% fraction.The purified STIV virions were further subjected to SDS-PAGE.The result showed that the STIV contained more than 20 proteins,and that its major capsid protein corresponded to a 50kDa abundant protein.The Western-blot analysis further indicated that most of the protein bands could be specifically recognized by using high quality mouse anti-STIV serum.
In order to obtain highly purified soft-shell turtle iridovirus(STIV) for immunological studies,3 methods were investigated.The purified virus was analyzed to certify its purity and protein structure.Results indicated an impurity and low recovery rate in the process applying two freezing-thawing cycles followed by differential centrifugation.Furthermore,the electron microscopic observation on the virus was difficult.On the other hand,by freezing-thawing the virus culture followed by magnetic stirring,ultrasonication and differential centrifugation,the virus recovery rate was improved.However,the virus structure was damaged.Alternatively,virus culture was concentrated by centrifugation,homogenization,magnetic stirring and differential centrifugation,in that order,and followed by sucrose density gradient centrifugation.The most satisfactory result was finally obtained.The virus particles collected could be observed in 30%-40%,40%-50% or 50%-60% sucrose density fractions.The most abundant and intact virions were seen in the 50%-60% fraction.The purified STIV virions were further subjected to SDS-PAGE.The result showed that the STIV contained more than 20 proteins,and that its major capsid protein corresponded to a 50kDa abundant protein.The Western-blot analysis further indicated that most of the protein bands could be specifically recognized by using high quality mouse anti-STIV serum.
2009, 24(2): 137-142.
Abstract:
Three regional fertilization models for the "high","medium" and "low" soil fertility grades were established based on 227 field tests on the NPK fertilizer efficiency for the grain and oil crops.Representative model analysis showed that 65.7% of the 35 regional fertilization models were typical.The boundary yield derivative method was used to recommend optimum application rate for the typical models.The Monte Carlo method was applied for non-typical models.The results showed that the average maximum N application rate for the early and the late rice in Fujian was 162 kg•hm-2 with an N P K ratio of 1:0.36:0.72,while the average economic N application rate was 122 kg•hm-2 with an N P K ratio of 1:0.32:0.65.The N P K application rate for the rice in the mountainous area was higher than in the coastal area.The recommended N application rate for the mid-reason rice was 206 kg•hm-2 with an N P K ratio of 1:0.38:0.80.The economical N application rates for sweet potatoes,potatoes and peanuts were 134 217 and 107 kg•hm-2 with N P K ratios of 1:0.47:1.40,1:0.37:1.00 and 1:0.50:0.98,respectively.It is apparent that considerable differences exist in the appropriate fertilization for soils of different fertility grades.
Three regional fertilization models for the "high","medium" and "low" soil fertility grades were established based on 227 field tests on the NPK fertilizer efficiency for the grain and oil crops.Representative model analysis showed that 65.7% of the 35 regional fertilization models were typical.The boundary yield derivative method was used to recommend optimum application rate for the typical models.The Monte Carlo method was applied for non-typical models.The results showed that the average maximum N application rate for the early and the late rice in Fujian was 162 kg•hm-2 with an N P K ratio of 1:0.36:0.72,while the average economic N application rate was 122 kg•hm-2 with an N P K ratio of 1:0.32:0.65.The N P K application rate for the rice in the mountainous area was higher than in the coastal area.The recommended N application rate for the mid-reason rice was 206 kg•hm-2 with an N P K ratio of 1:0.38:0.80.The economical N application rates for sweet potatoes,potatoes and peanuts were 134 217 and 107 kg•hm-2 with N P K ratios of 1:0.47:1.40,1:0.37:1.00 and 1:0.50:0.98,respectively.It is apparent that considerable differences exist in the appropriate fertilization for soils of different fertility grades.
2009, 24(2): 143-148.
Abstract:
An improved method for the numerical simulation of convective-dispersive equation(CDE) by using MATLAB language was developed.The program d0201.m was applied to implement basic CDE model for the numerical simulation.Compared with the professional Uptake software,the newly developed method rendered relative errors on the total N,P and K absorptions to be +2.94%,-1.35% and +2.83%,respectively.This program can produce attractive two-dimensional illustrations.It employs finite element method,which overcomes the Uptake's low convergence rate associated with the finite differentiation method,as well as the inconsistent accuracy at the nodes of integral interval.The new program was simple,efficient,and easy to use and maintain.Furthermore,with slight modification,the program could be applied to solve diverse CDE models for amelioration and water movement in soil.The MATLAB language simplifies complex mathematic calculations and makes the modeling process more user friendly than the Uptake.
An improved method for the numerical simulation of convective-dispersive equation(CDE) by using MATLAB language was developed.The program d0201.m was applied to implement basic CDE model for the numerical simulation.Compared with the professional Uptake software,the newly developed method rendered relative errors on the total N,P and K absorptions to be +2.94%,-1.35% and +2.83%,respectively.This program can produce attractive two-dimensional illustrations.It employs finite element method,which overcomes the Uptake's low convergence rate associated with the finite differentiation method,as well as the inconsistent accuracy at the nodes of integral interval.The new program was simple,efficient,and easy to use and maintain.Furthermore,with slight modification,the program could be applied to solve diverse CDE models for amelioration and water movement in soil.The MATLAB language simplifies complex mathematic calculations and makes the modeling process more user friendly than the Uptake.
2009, 24(2): 149-152.
Abstract:
By regular monitoring the nutrients in various parts of Liriope.muscari(Decne.) Bailcy,the plant's N,P and K assimilation pattern throughout the growth periods was obtained.It showed that at the tilling,flowering,tuber-bearing and the tuber-expanding stages,a peak fertilizer assimilation occurred.For 100 kg dry liriope harvested,5.17 kg,0.69 kg and 4.83 kg of N,P and K,respectively,were needed,with an N P K assimilation ratio of 1:0.13:0.74.
By regular monitoring the nutrients in various parts of Liriope.muscari(Decne.) Bailcy,the plant's N,P and K assimilation pattern throughout the growth periods was obtained.It showed that at the tilling,flowering,tuber-bearing and the tuber-expanding stages,a peak fertilizer assimilation occurred.For 100 kg dry liriope harvested,5.17 kg,0.69 kg and 4.83 kg of N,P and K,respectively,were needed,with an N P K assimilation ratio of 1:0.13:0.74.
2009, 24(2): 153-156.
Abstract:
An investigation on the contents of Fe in the surface soils of 150 Tieguanyin tea plantations in Anxi,Yongchun and Hua'an Counties in Fujian province as well as the transfer of the soil Fe into the tea leaves was conducted.The total contents of Fe in the soils ranged from 9.35 to 90.48 g•kg-1,with a mean of 32.33 g•kg-1.The available contents of Fe were between 9.20 to 395.11 mg•kg-1,with a mean of 57.11 mg•kg-1.The contents of Fe in the tea were between 19.77 to 797.47 mg•kg-1,with a mean of 126.71 mg•kg-1.The soil-to-tea leaves transfer factors of Fe positively correlated with the total or available Fe.
An investigation on the contents of Fe in the surface soils of 150 Tieguanyin tea plantations in Anxi,Yongchun and Hua'an Counties in Fujian province as well as the transfer of the soil Fe into the tea leaves was conducted.The total contents of Fe in the soils ranged from 9.35 to 90.48 g•kg-1,with a mean of 32.33 g•kg-1.The available contents of Fe were between 9.20 to 395.11 mg•kg-1,with a mean of 57.11 mg•kg-1.The contents of Fe in the tea were between 19.77 to 797.47 mg•kg-1,with a mean of 126.71 mg•kg-1.The soil-to-tea leaves transfer factors of Fe positively correlated with the total or available Fe.
2009, 24(2): 157-161.
Abstract:
An experiment was conducted in flowerpots to study the effect of the pyrene level in soil on the growth leaf,chlorophyll content and anti-oxidative enzyme activity of the spinach(Spinacia oleracea L.).No significant differences were found on the root length in different growth periods or the contents of chlorophyll a,chlorophyll b,chlorophyll a+b and carotenoid in the leaves,when 50-200 mg•kg-1 pyrene was applied.However,when pyrene application was greater than 50 mg•kg-1,significant reductions on plant height,fresh root,stem and leaf weights at the seedling stage were observed.As the pyrene increased beyond 100 mg•kg-1,the dry root,stem and leaf weights at harvesting stage decreased significantly.Pyrene stress increased MDA and SS in the leaves of the spinach seedling.It also significantly increased the APX,CAT and POD activities,as well as the antioxidant AsA contents in the leaves.
An experiment was conducted in flowerpots to study the effect of the pyrene level in soil on the growth leaf,chlorophyll content and anti-oxidative enzyme activity of the spinach(Spinacia oleracea L.).No significant differences were found on the root length in different growth periods or the contents of chlorophyll a,chlorophyll b,chlorophyll a+b and carotenoid in the leaves,when 50-200 mg•kg-1 pyrene was applied.However,when pyrene application was greater than 50 mg•kg-1,significant reductions on plant height,fresh root,stem and leaf weights at the seedling stage were observed.As the pyrene increased beyond 100 mg•kg-1,the dry root,stem and leaf weights at harvesting stage decreased significantly.Pyrene stress increased MDA and SS in the leaves of the spinach seedling.It also significantly increased the APX,CAT and POD activities,as well as the antioxidant AsA contents in the leaves.
2009, 24(2): 162-166.
Abstract:
A set of indices was established for the analysis of the actual ecological niche dynamics of the complex social-economical-natural ecosystem in Fujian from 1996 to 2006.The polygon synthesis indicator method was employed for the study.In general,at a relatively high rate,the resource niche rose gradually with fluctuations.The environmental,economical and social niches also increased during the same period.The integrated ecological niche increased 1.36 times,from 0.28 in 1996 to 0.66 in 2006.
A set of indices was established for the analysis of the actual ecological niche dynamics of the complex social-economical-natural ecosystem in Fujian from 1996 to 2006.The polygon synthesis indicator method was employed for the study.In general,at a relatively high rate,the resource niche rose gradually with fluctuations.The environmental,economical and social niches also increased during the same period.The integrated ecological niche increased 1.36 times,from 0.28 in 1996 to 0.66 in 2006.
2009, 24(2): 167-170.
Abstract:
Using the sprouts of slash pine as explants,medium formulation for the first generation and multiplication was optimized.The results showed that the optimum medium for the first generation was B5+6-BA 2.0 mg•L-1,and B5+6-BA 2.0 mg•L-1 +IBA 0.1 mg•L-1 for multiplication.The elite genotypes selected for the purposes included 132 from the non-antidisease and 2 from the antidisease families of the slash pine.
Using the sprouts of slash pine as explants,medium formulation for the first generation and multiplication was optimized.The results showed that the optimum medium for the first generation was B5+6-BA 2.0 mg•L-1,and B5+6-BA 2.0 mg•L-1 +IBA 0.1 mg•L-1 for multiplication.The elite genotypes selected for the purposes included 132 from the non-antidisease and 2 from the antidisease families of the slash pine.
2009, 24(2): 171-175.
Abstract:
Building the economic zone on the west coast of the Taiwan straits is the new round of entrepreneurship development strategies put forward by Fujian provincial government.Promoting modern agriculture development is an important essential task in the process of entrepreneurship in cross-straits economic zone.This paper described the strategic position of cross-straits modern agriculture construction,which is leading modern agriculture development by brand agriculture,ensuring modern agriculture development by safe agriculture,and promoting modern agriculture development by Fujian-Taiwan agricultural cooperation.It also put forward the strategies and countermeasures of modern agriculture development in cross-straits economic zone.
Building the economic zone on the west coast of the Taiwan straits is the new round of entrepreneurship development strategies put forward by Fujian provincial government.Promoting modern agriculture development is an important essential task in the process of entrepreneurship in cross-straits economic zone.This paper described the strategic position of cross-straits modern agriculture construction,which is leading modern agriculture development by brand agriculture,ensuring modern agriculture development by safe agriculture,and promoting modern agriculture development by Fujian-Taiwan agricultural cooperation.It also put forward the strategies and countermeasures of modern agriculture development in cross-straits economic zone.
2009, 24(2): 176-178.
Abstract:
The basic scientific research and information-sharing is essential for innovation and progress.This paper discusses the current situation,past achievements,problems and needs concerning the issue in the province.Recommendations to facilitate the system establishment are presented.
The basic scientific research and information-sharing is essential for innovation and progress.This paper discusses the current situation,past achievements,problems and needs concerning the issue in the province.Recommendations to facilitate the system establishment are presented.
2009, 24(2): 179-182.
Abstract:
Brand management has become an important option to solve the contradiction existing in China's current agriculture trade.On the one hand,surplus of agricultural commodities need market outlets.On the other hand,a serious undersupply of branded products hampers the market development.Although a few branded agricultural products have been created,developmental and promotional problems continue to muddle the trade.This paper proposes a culture-oriented approach to guide the brand management for the agricultural products.
Brand management has become an important option to solve the contradiction existing in China's current agriculture trade.On the one hand,surplus of agricultural commodities need market outlets.On the other hand,a serious undersupply of branded products hampers the market development.Although a few branded agricultural products have been created,developmental and promotional problems continue to muddle the trade.This paper proposes a culture-oriented approach to guide the brand management for the agricultural products.
2009, 24(2): 183-190.
Abstract:
This paper reviews the research on the citrus disease,huanglongbing(HLB),in China since 1978.It covers the disease geographical distribution and damages,host plant,studies on the pathogen,diagnosis and detection,transmission and epidemic,as well as control of HLB.
This paper reviews the research on the citrus disease,huanglongbing(HLB),in China since 1978.It covers the disease geographical distribution and damages,host plant,studies on the pathogen,diagnosis and detection,transmission and epidemic,as well as control of HLB.
2009, 24(2): 191-196.
Abstract:
With the environmental and ecological concerns,biological and physical means of pest control have become increasingly important.It is,therefore,essential to understand the interrelations among plant,herbivorous insects and natural enemies.This paper summarizes the reports of recent studies on the insect's orientation mechanisms.
With the environmental and ecological concerns,biological and physical means of pest control have become increasingly important.It is,therefore,essential to understand the interrelations among plant,herbivorous insects and natural enemies.This paper summarizes the reports of recent studies on the insect's orientation mechanisms.
