移栽时剪根对水稻形态及产量的影响  

Effect of Root Cutting on Morphology and Yield of Rice

作　　者：童淑媛[1] 张季中[1] 杜震宇[1] 王海龙[1] 李钟学[1] 魏树成[1] 

机构地区：[1]黑龙江农业经济职业学院,黑龙江牡丹江157041

出　　处：《作物杂志》2011年第2期53-56,共4页Crops

基　　金：黑龙江省教育厅高职高专2010年度科学技术研究(指导)项目(11555051)

摘　　要：采用田间小区试验,在水稻移栽时设置6个剪根处理,研究剪根对水稻生育时期、株高、叶面积指数、分蘖数及产量的影响。结果表明,移栽时剪根对株高无明显影响;移栽时留根长度在0～0.5cm会推迟水稻的生育时期,降低分蘖数和叶面积指数,导致产量降低;移栽时留根长1～2cm,虽然分蘖数降低,但有效分蘖数和产量构成因素与对照无明显差异。因此,移栽时根长度在1～2cm可保证水稻正常生长发育与产量形成。Based on field micro-plot experiments,the effect of root cutting on growth stages,plant height,LAI,tiller numbers and yield of rice were discussed by setting 6 cutting root levels at transplanting stage.The results showed that there was no effect on plant height by cutting root.When root length was lower than 0.5cm at transplanting stage,it could delay the growth stages,reduce tiller numbers and LAI,resulting in the decrease of the production of rice.Although the tiller number was reduced when rice root length was 1~2cm at transplanting stage,there was no effect on effective tiller numbers and yield component.Thus,it could ensure the development of plant and yield formation of rice when root length was 1~2cm at transplanting stage.

关 键 词：水稻 剪根 生长发育 产量 

分 类 号：S511[农业科学—作物学]