天鹰椒的磷肥效应及磷肥过量的负作用  

Effect of phosphate Fertilizer on Capsicum Yield Increase and the Negative Effect of its Excess Application

作　　者：周全奎[1] 尚兴甲[1] 王梅芳[1] 何玉娟[1] 程烘歧[1] 陈国生[1] 

机构地区：[1]冀州市农业局

出　　处：《中国辣椒》2002年第4期24-28,共5页

摘　　要：根据对天鹰椒氮肥、最经济的磷肥效应试验,求出天鹰椒的产量依N、P_2O_5用量的回归方程,计算出其最高和最经济的施N量和P_2O_5用量(81.7kg/hm^2),并应用其产量依P_2O_5用量的偏回归曲线,指明其产量依P_2O_5用量呈抛物线效应趋势;应用其产量构成因素及吸收N、Ca、Mg数量依P_2O_5用量的偏回归曲线,阐明P_2O_5施用过量产生负作用,找到P_2O_5过量导致天鹰椒减产的原因和根源。Regression equations to express the relation between fruit yield of the capsicum variety Tianyingjiao (C. a var. fascicalatum Irish)and the N,P_2O_5 application rate were established to estimate the highest and the most economic N and P_2O_5 application. A parabola-like effect was produced on the partial regression curve indicating the relation between yield and P_2O_5 application rate. And it is indicated that the fruit yield decrease was caused by the excess P_2O_5 application according to the partial regression curves indicating the relation between the yielding components and the plant's N、Ca、Mg absorption.

关 键 词：天鹰椒 磷肥效应 磷肥过量 负作用 偏回归曲线 

分 类 号：S641.3[农业科学—蔬菜学] S606.2[农业科学—园艺学]