沧麦119产量因素效应分析研究

以小麦品种沧麦119为试材，通过产量构成因子（单位面积穗数、穗粒数和千粒重）对其产量的相关分析、通径分析和多元线性回归模拟，研究了沧麦119产量性状对产量的直接和间接效应。结果表明：产量性状对产量的直接效应依次为单位面积穗数〉千粒重〉穗粒数，互作效应依次为单位面积穗数×千粒重〉单位面积穗数×穗粒数〉穗粒数×千粒重。在综合分析的基础上，提出了产量水平7500kg／hm^2。左右的栽培中，沧麦119产量结构参考指标适宜参数为单位面积穗数600～6757万穗／hm^2。、穗粒数30粒／穗、千粒重44～46g。

Analysis and Research on Effect of Yield Factors of Cang-wheat 119

The pattern of correlation analysis and multiple regression analysis were adopted to study the direct and indirect effect of Cang-wheat 119 yield factors on yield.The results indicated that the characters of Cang-wheat 119 yield had direct and indirect effect on its yield, that was, the direct effects were as follows ： the number of ears 〉 1000-grain weight 〉 the number of grains per ear. The order of interactive effects were the number of ears x 1 000-grain weight 〉 the number of ears x the number of grains per ear 〉 the number of grains per ear x 1 000-grain weight. When the yield level was 7 500 kg/hm2, the optimum parameters which were 6 000 - 6 750 thousand ears/hm2 , 30 grains/ear and 44 - 46 g/1000-grain weight were put forward on the basis of above analysis.