【摘要】 本试验于1985—1986年,用盆栽,在大豆不同生育时期以人工控制温度的方法进行低温处理。试验结果指出:低温处理使大豆植株生长缓慢,生育时期延迟,产量下降。低温处理的温度越低,处理的时间越长影响越重。大豆花芽分化期是大豆生理上的低温冷害关键期。该阶段对低温处理最敏感,产量大幅度下降,主要是荚数和粒数减少,空秕荚多,百粒重轻等综合因素所致。低温处理使大豆花荚败育。雌蕊遭受冷害也会阻碍结荚。低温处理大豆还使子粒加重病害。因此,必须注意防御低温冷害,才能确保大豆高产稳产质佳。更多还原

【Abstract】 Pod experiment on treatment of low temperature to soybean at different growth stage was carried out on 1985-1986 by use controlled de-latemperature. The results indicated: The soybean plant grew slowly, yed growth peroid and decrease on yield under treatment of low temperature. The lower and longer of low temperature treatment, the more severe effect on plant. The period of flower bud differentiation with most sensibility to low temperature was the key stage of cool injury of soybean. The vast falling of yield mainly was caused by the complementary facters of reduction of number of pod and seed, reducing weight per 100 seeds. The flowdr of soybean was sterile by low temperature treatment. Pistil of soybean with cool injury prevanted to have pod getting also. Low temperature treatment in seed filling period affected the rapidity of seed filling and disease damage.更多还原