摘要
本文分析了冀东麦区1983～1986年丰抗号小麦产量与产量构成因子的关系,并用通径分析法计算了产量构成因子对产量的各自作用,得出了三个因子对产量的作用顺序为穗粒数>亩穗数>千粒重。多元回归方程式为:y=169.466+4.041x_1+7.5248x_2+4.3168x_3。结果表明,丰抗号小麦丰产应以主攻穗粒数为主。在此基础上,计算出亩产350公斤的产量构成因素指标,提出了相应的栽培技术途径。
In this paper, the relationship between yield and yield factors of two Feng Kang winter wheat varieties in the east of Hebei in 1983—1986 was analysed, and contribution of each factor to yield was calculated with path—cocfficient analysis, showing the factors order of contribution to yield was mumber of grains/ear>number of ears/mu>1000 grain weight. The multiple regression equation was as follows, y=169.466+4.041x_1+7.258x_2+4.3168x_3 The result indicated that it should be emphasized on number of grains/ear to cultivate Feng Kang winter wheat, Based on these, the indexes of yield factors for cultivation of Fang Kang wheat at yeild level of 350kg/mu were calculated, and the nelative caltivation method was proposed.
关键词
小麦
产量
栽培
指标
构成因子
Feng Kang winter wheat yield factors index culelvation method
