【摘要】 以有效穗、每穗总粒数、结实率为自变量,产量为依变量,对D优3232强化栽培下高产群体的产量构成因素进行了回归分析和通经分析。结果表明,有效穗数、每穗总粒数、结实率与产量均呈极显著正相关,3因素对产量贡献大小的顺序依次为:每穗总粒数>有效穗数>结实率,穗粒数是强化栽培下高产群体的关键因素。提出了强化栽培下建立高产群体的主要技术路线。更多还原

【Abstract】 The paper performed Regression analysis and Path analysis on the yield(Y)as the dependent variable and effective panicle number(x1)、total grain of per ear(x2)and grain setting rate(x3)as independent variables in the system of rice intensification(SRI).The result showed that,the efective panicle number、total grain of per ear and grain setting rate were positively correlated with the yield.Three factors contribute to the yield was arranged from big to small:total grain of per ear,efective panicle number and grain setting rate.The grain number of panicle is the key factor of the D3232 population under the system of rice intensification(SRI).The main technical route of high yield population structure of D3232 under the system of rice intensification(SRI).更多还原