Effect of Seedling Planting Density on Canopy and Yield of Super-rice,Nanjing 49

KE Xi-huan; LI Xia; ZHONG Wei-gong; FAN Fang-jun; QIAN Bao-yun

doi:10.19303/j.issn.1008-0384.2014.08.003

Volume 29 Issue 8

Aug. 2014

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KE Xi-huan, LI Xia, ZHONG Wei-gong, FAN Fang-jun, QIAN Bao-yun. Effect of Seedling Planting Density on Canopy and Yield of Super-rice,Nanjing 49[J]. Fujian Journal of Agricultural Sciences, 2014, 29(8): 725-732. doi: 10.19303/j.issn.1008-0384.2014.08.003

Citation:

KE Xi-huan, LI Xia, ZHONG Wei-gong, FAN Fang-jun, QIAN Bao-yun. Effect of Seedling Planting Density on Canopy and Yield of Super-rice,Nanjing 49[J]. Fujian Journal of Agricultural Sciences, 2014, 29(8): 725-732. doi: 10.19303/j.issn.1008-0384.2014.08.003

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Effect of Seedling Planting Density on Canopy and Yield of Super-rice,Nanjing 49

doi: 10.19303/j.issn.1008-0384.2014.08.003

1. College of Life Science,Nanjing Agricultural University;
2. Institute of Food crops;

Received Date: 2014-04-21
Publish Date: 2014-08-18

Abstract

Abstract

Nanjing 49 was used in the experimentation to determine the effect of seedling planting density on the canopy and yield of the super-rice.The results showed that Nanjing 49's adaptability to the varying planting density was rather broad.It could reach a high yield at the range of 2-4plans·hill-1.However, when the planting density was more than 5plants·hill-1, the productivity significantly reduced.It appeared that Nanjing 49 adapted to the varied planting density by different means.For example, at the rate of 2plants·hill-1, it increased the total dry matters to reach a high yield by increasing its tillers per plant, total grains per spike, and photosynthetic capacity per leaf.At 3plants·hill-1, a high yield was achieved through increasing the total leaf area and effective panicles per hill.Then, when the planting was increased to 4plants·hill-1, it improved the yield by increasing LAI and reducing the leaf's base angle of the second leaves to effectively increase the sunlight reception.Therefore, with its high adaptability to the planting density, Nanjing 49 could provide a yield as high as (12.63±0.253) t·hm-2 on a reduced number of seedlings·hill-1 (e.g., 2plants·hill-1) to save on the planting cost.
- Nanjing 49,
- seedling planting,
- Pn,
- crop quality,
- dry weight accumulation,
- yield

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References(32)

References

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