论文部分内容阅读
以扬两优6号为材料,研究不同播种期和播种量对免耕直播稻产量及其构成的影响。结果表明,播种期和播种量及其互作对产量均有极显著影响。在试验因素水平范围内,随着播种期的推迟,产量极显著降低;随着播种量的增加,产量增加,达到最高产量后再增加播种量产量降低;不同播种期所要求的最适播种量不同。在产量构成因素方面,播种期和播种量主要是显著影响免耕直播稻的每穗总粒数、结实率和有效穗数。
The effects of different sowing dates and seeding rates on the yield and its composition of no-tillage direct-seeded rice were studied using Yangliangyou 6 as material. The results showed that the sowing date, seeding rate and their interaction had a very significant impact on the yield. Within the range of experimental factors, with the delay of sowing date, the yield decreased significantly. With the increase of sowing amount, the yield increased, the highest sowing rate was followed by the increase of sowing yield. The optimum sowing rate different. In terms of yield components, the sowing date and seeding rate mainly affected the total grains per panicle, seed setting rate and effective panicle number of no-tillage direct-seeded rice.