关键词: font-family:宋体, ">水稻；叶面肥；施用时期；穗部性状；产量；品质

Abstract: Taking rice variety Kenjing 8 as the experimental material,the effects of different foliar fertilizers[Leili(0.45 L/ha),Zhanshi(1.05 L/ha),KH₂PO₄(3.00 kg/ha)]on panicle traits,yield and quality of rice at different application periods(applying foliar fertilizer two times:full heading stage and 15 d after full heading;applying foliar fertilizer four times:jointing stage,full panicle stage,10 and 20 d after full heading) were studied,so as to provide theoretical basis for the selection of the best foliar fertilizer for improving quality and yield of rice.The results showed that applying Leili four times increased the number of primary and secondary branches,seed setting rate and 1 000-grain weight of primary and secondary branches compared with CK without foliar fertilizer.Application of Leili,Zhanshi and KH₂PO₄ in different periods had different effects on increase of rice yield. The effect of applying foliar fertilizer four times was better than that of applying foliar fertilizer two times,and applying Leili,Zhanshi and KH₂PO₄ four times increased the yield by 12.43%,10.59% and 11.24% compared with CK respectively.In terms of quality,applying Leili four times had the best effect on increase of the brown rice rate,polished rice rate,protein content and amylose content of rice,applying KH₂PO₄ four times had the best effect on decrease of chalky grain rate and chalkiness. To sum up,applying Leili four times at jointing stage,full panicle stage,10 and 20 d after full heading had the best effect on improvement of yield and quality of rice.

Key words: Rice, Foliar fertilizer, Application period, Panicle traits, Yield, Quality