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我县地处川西北高寒山区,蚕豆是主要粮食作物之一,又是重要的经济作物。在常年,每株有19—26个花序,每个花序开2—6朵小花,单株共开花48—74朵。但是,单株结荚数仅4—7个,平均每荚结籽不到两粒。绝大部份花朵开3—5朵花,而只结一个荚。开花多,结荚少,粒数少,蚕豆单产低,总产不高。我们采用打尖的方法摘除植株顶心2—3厘米,调节植株营养生长与生殖生长对养分供需矛盾,探索不同时期摘除顶心与产量的关系。试验品种有本地白蚕豆和金川大白蚕豆两种。试验面积149.1亩。结果如下:
My county is located in the alpine mountains of northwest Sichuan, broad bean is one of the main food crops, but also an important cash crop. In the perennial, each plant has 19-26 inflorescences, each inflorescence open 2-6 florets, a total of 48-74 flowers per plant. However, the number of pods per plant is only 4-7, with an average of less than two seeds per pod. The vast majority of flowers open 3-5 flowers, but only one pod. More flowers, less pods, fewer grains, low yield of broad beans, the total production is not high. We use the method of spiked removal of the top 2-3 centimeters of the plant center to adjust the vegetative and reproductive growth of plants on the supply and demand of nutrients and explore the relationship between removal of top center and yield at different times. Test varieties are white beans and Jinchuan white broad beans two. Test area of 149.1 acres. The result is as follows: