中国种植面积最大的水稻良种“汕优63”培育的理论与实践
Breeding Theory and Practice of "Shanyou 63",the Variety with the Largest Cultivated Area in China
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摘要: 1986年至今已11年,“汕优63”一直是中国种植面积最大的水稻良种,平均每年约种植467万hm2,占全国籼稻区总面积的22%左右,1990年超过667万hm2,占当年全国水稻总面积的27.1%,推广的范围从100°36'~120°56'E,从17°36’~37°49'N.至1996年全国已累计种植5267万hm2,共增产粮食585.4亿kg左右。四年全国区试结果表明,每公顷产量比对照高1112kg,一般每公顷产7500~9000kg,最高达13.9t/hm2.汕优63再生力强,再生稻最高产量达8231kg/hm2(头季稻9920kg/hm2).还介绍了汕优63的选育过程、产量结构、光合特性、抗性表现和稻米品质。最后从理论角度总结汕优63选育的成功经验。Abstract: The cultivated area of "shanyou 63" has been kept the first in China since 1986. The average cultivated area was 4. 67 million hm2 per year, accounted for 22% of the total area of indica zone in China and more than 6.67 million hm2 in 1990.It is almost cultivated all over the indica cultivated zone from17°36’N to 37°49’N and from 100°36’E to 121°56’N. It has been cultivated 5267 million hm2 and in-creased about 58.5 billion kg grain from the year 1986 to 1 995. According to the national regional yield trial, it increased 1112 kg grain per hm2 comparcd with CK. General grain yield was 7500 kg to 9000 kg and the highest was 13. 9 kg per hm2. It has good ratoon ability and the grain yield ol ratconing rice reached 8231 kg per hm2. In this article,the author also introduce the breeding course,yield constitu-tim,photosynthesis characteristics, resistant ability and gain quality of Shanyou 63 and sunmarize the successful breeding pratice of Shanyou 63.
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Key words:
- Indica Rice /
- Hybrid Rice, Shanyou 63 /
- Retooning Rice /
- Cultivated Area /
- Breeding /
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[7] 何银成等199?仙桃市汕优63再生利用试验示范总结.湖北农业科学.(3):9-II [9] 钱自强等.汕优G3大面积高产的穗粒结构分析和主攻措施.湖北农业科学
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