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应用微机分析了河北省国营柏各庄农场1985～1987年水稻冀粳8号高产示范、试验田的产量与产量构成因素——亩穗数(X_1)、穗粒数(X_2)、空秕率(X_3)、千粒重(X_4)的关系,建立了产量数学模型:y=-264.5932-0.5743X_1~2+O.5257X_1X_2+1.2553X_1X_4-0.0365X_2~2并用通径分析法计算了各个因素对产量的作用。结果表明,冀粳8号高产应以增加亩穗数为主。在此基础上,筛选出亩产1400斤以上的产量构成因素指标,进而提出“主攻穗数、兼顾大穗、争取粒重”的栽培途径。
The yield and yield components of the experimental high yielding rice cultivar “JiJing 8” in Baigezhuang Farm of Hebei Province from 1985 to 1987 were analyzed by computer. The results showed that the yield and yield components of the experimental farmland were the number of ears per plant (X_1), the number of grains per spike (X_2) X_3) and 1000-grain weight (X_4), the mathematical model of yield was established: y = -264.5932-0.5743X_1 ~ 2 +0.5257X_1X_2 + 1.2553X_1X_4-0.0365X_2 ~ 2 and the effect of each factor on yield was calculated by the path analysis method . The results showed that the high yield of JiJing 8 should mainly increase the number of ears per mu. On this basis, the index of yield components of more than 1400 pounds per mu was screened, and then the cultivation method of “main spike number, big spike weight and grain weight gain” was put forward.