前氮后移对杂交中稻及其再生稻产量的影响  

Effects of Shift Part of Nitrogen Fertilizer from Basal-tillering to Panicle Initiation on Grain Yield of Mid-season Hybrid Rice and Ratoon Rice

作　　者：刘明星[1] 张林[2] 范青华[1] 熊洪[2] 周兴兵[2] 朱永川[2] 蒋鹏[2] 刘茂[2] 郭晓艺[2] 徐富贤[2] 

机构地区：[1]四川省泸县农业局,四川泸县646100 [2]四川省农业科学院水稻高粱研究所,四川泸州646000

出　　处：《中国稻米》2014年第4期48-50,共3页China Rice

基　　金：四川省财政基因工程项目-论文基金(2013LWJJ-009);公益性行业专项(201003016);粮食科技丰产工程(2011BAD16BO5-1);西南水稻创新体系建设;四川省财政推广项目

摘　　要：以20个杂交中稻组合为材料,在前氮后移与重底早追两种施氮方式下,研究了前氮后移对头季稻及再生稻产量的影响。结果表明,前氮后移有助于提高杂交中稻组合头季稻及再生稻产量,且高于重底早追施氮方式,但各杂交组合间表现各异。其中,内5优306、蓉18优447、德香4103、内5优317和川谷优7329这5个组合前氮后移处理头季稻比重底早追处理显著或极显著增产,乐优198、宜香优800、蓉优1808、冈比优99、冈优725、德香4103、炳优900、F优498、内5优317这9个组合的再生稻产量前氮后移处理比重底早追处理高。综合考虑头季稻产量和再生力,两季总产较高的组合为宜香优800、内5优317和蓉18优447。Effects of shift part of nitrogen fertilizer from basal-tillering to panicle initiation on grain yield of mid-season hybrid rice and ratoon rice were investigated with 20 rice combinations in two nitrogen application strategies. The results showed that the average grain yield of 20 hybrid rice combinations was higher than that of traditional fertilizing method. There were 5 combinations ’ grain yield of main crop rice and 9 combinations’ grain yield of ratoon rice higher than traditional fertilizing method. Considered to the total yield of main crop rice and ratoon rice, there were 3 combinations’ grain yield significant higher than traditional fertilizing method.

关 键 词：杂交中稻 前氮后移 头季稻 再生稻 产量 

分 类 号：S511.062[农业科学—作物学]