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提高杂交稻秋季制种的单位面积产量,关键是达到理想的花期、花时相遇.几年来,在制种过程中常发生有些田块父母本花期相遇虽然较好,但花时相遇不理想,结果产量仍然不高.如果能使不育系当天开花高峰期提前,开花集中,必然增加父母本花时相遇的机率,提高授粉的能力,从而增加杂交种产量.我们从油菜施硼肥解决花而不实症中得到启示,1980年在秋季制种时,进行喷硼试验,以求调节花时,提高受精和结实能力,结果如下:
Improve the yield per unit area of hybrid rice autumn seed production, the key is to achieve the desired flowering, when met with flowers. In recent years, the production process often occur in some plots of parents of flowering meet better, but the time met less than ideal, the results The yield is still not high.If you can make the flowering peak of the male sterile line in advance of the day flowering, will inevitably increase the probability of parents meet the flowering when the flower, improve pollination capacity, thereby increasing the yield of hybrids we apply boron fertilizer from rape Insufficient to get enlightenment, seed in the autumn of 1980, the boron spray test, in order to adjust the flowering, improve fertility and fruiting ability, the results are as follows: