应用多元回归估测芒果产量性状的研究

 应用多元回归分析研究了三年芒12个生物学性状与座果率之间的关系.结果表明(1)与座果率关系最密切的五个性状依次为:座果数,一次梢粗呈显着正相关.总花序,二次梢数量,-次梢长呈显着的负相关.(2)树冠体积等对座果率的作用较小.(3)为了便于生产上的应用,采用逐步回归建立了估测座果率的最优回归方程,R=0.9846,P<0.01,比用12元回归的决定系数R²提高了0.8%左右.

Study on Estimating Yield Properties of Sannianmang by Multiple Regression

Relationship between fruit setting rate and twele sorts of sannianmang's characteristics was studied by multiple regression.Results indicated that it was positive relationship between fruit setting rate and amount of fruit,thick of first branches,and negative relationship between fruit setting rate and amount of anthotaxy,amount of second branches,length of first branches;volume of tree crown had little effect on fruit setting rate.Optimisation regression equation was established by stepwise regression to estimate fruit setting rate,with r=0.9846,P<0.01,which determination coefficient was 0.8% higher than by linear muItiple regession.