氮肥运筹方式对水稻中优608分蘖及产量构成的影响  

Effect of Nitrogen Fertilizer Operation on Tillering and Yield Composition of Rice Zhongyou 608

作　　者：吴文和 熊贵周 朱建强 WU Wenhe;XIONG Guizhou;ZHU Jianqiang(Qiandongnan Agriculture Science Institute,Kaili Guizhou 556000)

机构地区：[1]黔东南州农业科学院,贵州凯里556000

出　　处：《现代农业科技》2023年第20期11-13,共3页Modern Agricultural Science and Technology

摘　　要：以水稻品种中优608为试验对象,研究不同氮肥运筹方式对其分蘖动态、产量构成的影响。结果表明:处理A(氮肥总量的50%作基肥、50%作穗肥)分蘖发生及最高苗较处理B(氮肥总量的70%作基肥、30%作分蘖肥)少,形成的有效穗数相对较低,而成穗率、结实率、千粒重、产量均高于处理B,说明氮肥按基肥∶分蘖肥∶穗肥=5∶0∶5的方法施用,中优608分蘖肥相对不足,但更容易促进其形成大穗,获得高产,氮肥转化利用率也更高。Taking rice variety Zhongyou 608 as the experimental object,this paper studied the effects of different nitrogen fertilizer operation on its tillering dynamics and yield composition.The results showed that treatment A(50%of the total nitrogen fertilizer as base fertilizer,50%as ear fertilizer)had fewer tillering and the highest seedlings compared with treatment B(70%of the total nitrogen fertilizer as base fertilizer,30%as tillering fertilizer),resulting in relatively lower effective panicle numbers.However,the ear formation rate,seed setting rate,1000-grain weight,and yield were all higher than those of treatment B.It indicated that when nitrogen fertilizer was applied according to the method of base fertilizer∶tillering fertilizer∶ear fertilizer=5∶0∶5,and the tillering fertilizer of Zhongyou 608 was relatively insufficient,but it was easier to promote the formation of large panicles,and achieved high yield and higher nitrogen fertilizer conversion and utilization efficiency.

关 键 词：水稻 中优608 氮肥运筹 分蘖动态 产量构成 

分 类 号：S511[农业科学—作物学] S147.5