不同氮素水平及水浆管理对早稻产量的影响  

Effects of Different Nitrogen Levels and Irrigation Management on Early Rice Yield

作　　者：卢春梅 张玲霞 章向祝 LU Chun-mei(Chizhou Institute of Agricultural Sciences,Chizhou,Anhui 247000)

机构地区：[1]池州市农业科学研究所,安徽池州247000

出　　处：《园艺与种苗》2020年第8期43-45,共3页Horticulture & Seed

基　　金：优质水稻新品种的选育及绿色配套栽培技术的研究及示范。

摘　　要：[目的]筛选出最佳水浆管理条件下,适宜早稻高产的合理氮肥量。[方法]采用裂区设计,研究在丰产沟湿润灌溉和常规灌溉条件下,4种氮素水平对早稻产量及氮肥利用率的影响。[结果]在同等氮素水平下,采用丰产沟式湿润灌溉模式,早稻氮肥利用率平均提高3.8%,产量增加4.31%。[结论]在丰产沟湿润灌溉条件下,早稻高产施氮水平在150~187.5 kg/hm2,可以有效改善双季稻的群体结构,增强水稻根系的活力,提高成穗率及氮肥利用率。[Objective]To screen out the suitable nitrogen fertilizer amount for high-yield of early rice under the optimal irrigation management conditions.[Method]Split plot design was used to study the effects of four nitrogen levels on the yield and nitrogen use efficiency of early rice under high-yield furrow wet irrigation and conventional irrigation.[Result]Under the same nitrogen level,the nitrogen use efficiency and yield of early rice increased by 3.8%and 4.31%respectively.[Conclusion]Under the condition of high-yield furrow irrigation,the high-yield nitrogen application level of 150-187.5 kg/hm2 could effectively improve the population structure of double cropping rice,enhance the vitality of rice root system,increase the panicle formation rate and nitrogen use efficiency.

关 键 词：早稻 氮素水平 灌溉模式 产量 

分 类 号：S511[农业科学—作物学]