超级杂交中稻节氮栽培氮用量及氮磷钾配比模式研究  

Study on Optimum Rate of Nitrogen,Phosphorus and Potassium for Super Hybrid Middle Rice Nitrogen-Saving Cultivation

作　　者：龙继锐[1] 马国辉[1] 宋春芳[1] 周静[1] 沈洪昌[2] 

机构地区：[1]湖南杂交水稻研究中心,湖南长沙410125 [2]湖南农业大学,湖南长沙410128

出　　处：《农业现代化研究》2008年第4期494-497,共4页Research of Agricultural Modernization

基　　金：国家科技支撑计划(编号:2006BAD02A13);湖南省“十一·五”农业重大专项(编号:2006NK1001)

摘　　要：为探讨超级杂交中稻节氮栽培最佳节氮量及氮与磷钾最佳配比,采用"3414"试验设计,研究了不同缓释氮肥用量及与磷钾肥配比与超级杂交中稻Y两优1号产量间的关系,建立了节氮栽培条件下Y两优1号氮磷钾施用量与产量的数学模型。结果表明:氮肥用量显著影响水稻产量,但氮磷钾配比变化对水稻产量影响不显著;氮磷钾三元素对产量的作用大小依次为氮肥>钾肥>磷肥;获得最高产量(10500.9kg/hm2)的N、P2O5、K2O施用量分别为205.2 kg/hm2、38.8 kg/hm2、158.6kg/hm2。单产达到9750kg/hm2的推荐施肥方案为:N 163.3-196.7 kg/hm2、P2O5 57.2-85.3 kg/hm2、K2O 175.5-214.5 kg/hm2。＂3414＂field experiments of fertilizer effects were conducted to explore the economical N rates and the optimized combination of N, P and K for Super Hybrid Middle Rice Y-Liang you No. 1 Nitrogen-saving cultivation, the mathematic mode was set up after analyzed the relationship between the SCU application rate, the allocation of N, P, K fertilization and grain yield. The results indicated that grain yield was significantly affected by the rate of Nitrogen applied ,but there were no significant effect in the allocation of N, P, K fertilization on grain yield; the order of the effects of N, P, K fertilizer on grain yield was N〉K〉P; The maximum yield（10500.9kg/hm^2） was obtained with the rates of N, P, K were 205.2 kg/hm^2,38.8 kg/hm^2, 158.6kg/hm^2, respectively, Recommended fertilization combination of N,P,K for more than 9750kg/hm^2 yield were N 163.3-196.7 kg/hm^2,P2O5 57.2-85.3 kg/hm^2,K2O 175.5-214.5 kg/hm^2.

关 键 词：超级杂交中稻 节氮栽培 配方施肥 肥料效应函数 

分 类 号：S511[农业科学—作物学] S147.21