水稻营养生长期与生殖生长期不同比例施氮量的试验总结

Summarization on Experiment of Different Nitrogen Application Ratio at Vegetative and Reproductive Growth Stages in Rice

通过2 a对水稻营养生长期与生殖生长期施用不同比例氮肥试验研究,结果表明:营养生长期与生殖生长期的氮肥分配比例以7∶3为宜,可减少无效分蘖、提高成穗率,提高结实率和千粒重,增产40 kg/667 m2。

Through the research on different nitrogen application ratio at vegetative and reproductive stages in rice, the results showed that the suitable nitrogen application ratio at vegetative and reproductive stages was 7：3 so that the non- effective tillers were reduced, effective panicle rate increased, kernel set and 1 000-grain weight enhanced, and the yield increased by 40 kg/667 m^2.