摘要
通过大田试验比较"四水"、"三跑三为主"的科学管水法与农民习惯管水法对超级稻‘Y两优1号’产量的影响,以期为超级稻水分管理提供参考。结果表明:科学管水法比农民习惯管水法单株总根数、活根数分别增加8.2、5.8根,净光合生产率提高4.14 g/m2·d,有效穗数增加10万/hm^2,总粒数、实粒数分别增加12.5、16.9粒/穗,结实率提高3.2%,千粒质量增加0.5 g,增产6.89%,同时植株抗逆性增强,纹枯病病情指数下降4.59。
Field comparison experiment with farmer, s habit water management, and two scientific managements, i. e. ＂ four water＂ and ＂ three run three main＂ ,was carried out in order to provide scientific reference for water management of super hy-brid rice. The root system,leaf area and net photosynthetic rate were measured and compared. The results showed that the total number of roots and the number of live roots of the new water managements increased 8. 2 and 5. 8, respectively. Their net photosynthetic productivity increased 4. 14 g/m2 ？ d and the effective ear increased 10 105/hm2. Their grains increased 12. 5 and 16. 9. Their seed setting rate increased 3. 2% , their grain weight increased 0. 5 g,and their yield increase 6. 89%. At the same time,the plant stress resistance increased,and the sheath blight disease index decreased 4. 59.
出处
《作物研究》
2017年第5期470-473,共4页
Crop Research
基金
国家水稻产业技术体系项目(CARS-01-01A)
关键词
超级稻
水分管理
产量
super rice
water management
yield
