杂交中籼水稻机插栽培氮肥运筹研究  

Study on Nitrogen Application for Middle-season Indica Hybrid Rice under Machine Transplanted Cultivation

作　　者：张玉海[1,2] 吴文革[1] 张健美[3] 黄义德[2] 郑乐娅[1] 李霞红 徐长斌 李福军 陈学英 

机构地区：[1]安徽省农业科学院水稻研究所,安徽合肥230031 [2]安徽农业大学农学院,安徽合肥230036 [3]安徽省农机推广总站,安徽合肥230061 [4]安徽省天长市农业科技中心,安徽天长239300

出　　处：《安徽农业科学》2009年第16期7372-7374,共3页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑计划(2006BAD02A06-23)和(2007BAD89B10)

摘　　要：[目的]明确杂交中籼水稻机插栽培高产高效氮肥运筹技术模式。[方法]2007和2008年,分别以两优6326和丰两优3号为试材,在机插和相同磷钾肥(底肥)条件下,设置3种施氮量(165、210和255 kg/hm2)和2种基蘖肥与穗粒肥比例(6.0∶4.0和7.5∶2.5),进行田间裂区试验。[结果]在中小苗机插条件下,杂交中籼水稻丰产栽培的适宜施氮量为210 kg/hm2;减少基蘖肥施氮比例、相应适当增加穗肥施氮量,并在倒2叶期追施40%的穗肥,更有利于机插杂交中籼水稻高产群体的形成,并对抽穗后干物质积累量和稻谷产量有明显的促进作用;基蘖肥∶穗肥比例以6.0∶4.0为佳。[结论]杂交中籼稻机插栽培的氮肥运筹不同于常规粳稻机插栽培;在9750 kg/hm2目标产量水平下,推荐的施氮方案是大田总用氮210 kg/hm2。[ Objective ] The study aimed to make clear the high-yleld and high-efficient N fertilizer application technique mode for the middleseason Indica hybrid rice under machine-transplanted cultivation. [ Method ] With Liangyou 6326 and Fengliangyou 3 as the tested materials resp. in 2007 and 2008, 3 kinds of N application rate at 165,210 and 255 kg/hm2 and 2 proportions of basic-tillering and panicle-spikelet fertilizers at 6.0：4.0 and 7.5：2.5 were set up under the conditions of machine-transplanting and same P and K fertilizer application （ used as basic fertilizer） to conduct the split plot experiment in the field. [ Result] Under the condition of machine-transplanting for middle and small seedlings, the suitable N applying amount for high yield of the middle-season Indica hybrid rice was 210 kg/hm2. Properly reducing the N applying proportion of basic-tillering fertilizer and correspondingly increasing N application rate of panicle fertilizers by applying 40% panicle fertilizer of total amount in the stage of second leaf from top was more propitious to form the high-yield population of middle-season Indica hybrid rice and had obvious promotion on the dry matter accumulation in rice after heading and high-yield of middle-season lndiea hybrid rice, with the ratio of basic-tillering and panicle-spikelet fertilizers at 6.0：4.0 being optimum.. [ Conclusion ] N fertilizer application under machinetransplanted cultivation for the middle-season Indiea hybrid rice was not as same as that for conventional Japonica rice and the total N amount of 210 kg/hm2 in the field was recommended for the objective yield level of 9 750 kg/hm2.

关 键 词：杂交中籼水稻 机插栽培 施氮量 氮运筹 

分 类 号：S511[农业科学—作物学]