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本文分析了油莱有效角果数、每角粒数、千粒重、产量之间的关系,并对构成产量三因素在不同产量水平、不同分枝级别、不同分枝节位上的变化特点,以及在不同栽培条件下有效角果数的分布规律进行了研究。结果表明:构成产量三因素与产量之间呈极显著正相关,而构成产量三因素之间呈极显著负相关。在不同产量水平下,每亩有效角果数变幅最大,每角粒数次之。差异分别达极显著和显著平准。不同分枝级别上的有效角果数以一次分枝>主序>二次分枝,每角粒数和千粒重则是主序>一次分枝>二次分枝。不同分枝节位上的有效角果数、每角粒数和千粒重均从自上而下第10节显著降低。单株有效角果数则随着播期的推迟、密度酌增大和施肥水平的下降而减少。
In this paper, the relationship between the effective fruit number, the number of grains per corner, the 1000-grain weight and the yield of oil rape was analyzed, and the change characteristics of the three factors that constitute the yield at different yield levels, different branch levels and different branch nodes were analyzed. The distribution of effective pods under different cultivation conditions was studied. The results showed that there was a significant positive correlation between the three factors of yield and yield, and the three factors of yield were extremely significantly negatively correlated. At different yield levels, the maximum number of effective pods per acre was the largest, with the number of pods per number of times. The differences reached significant and significant levels respectively. The number of effective pods at different branch levels was divided into one branch> main order> secondary branch, and the number of kernels per grain and thousand kernel weight were the main order> primary branch> secondary branch. The number of effective pods, the number of grains per corner, and the weight of 1000 seeds in different branches were significantly decreased from the top to the tenth. The number of pods per plant was decreased with the delay of sowing date, the increase of density and the decrease of fertilization level.