蚕豆是我县主要小春粮食作物之一,常年播种面积八万余亩,约占小春粮食面积的50％。但是,蚕豆单位面积产量不高,一般亩产仅二百来斤。影响单产提高的一个重要原因是蚕豆无效蕾、花、荚多,成荚率低,据调查,当前大面积生产中,成荚率一般仅10％左右。因此,如何保花保荚以减少无效蕾、花荚,提高成荚率便成为蚕豆生产和科研急待解决的重要课题。1964年以来,我们 Broad bean is one of the main spring food crops in our county, perennial planting area of ​​more than 80,000 acres, accounting for 50% of Xiaochun food area. However, the yield of broad beans per unit area is not high, generally only two hundred pounds per mu. Affect the yield increase is an important reason for the ineffective buds of broad beans, flowers, pods, pod rate is low, according to the survey, the current large-scale production, pod rate is generally only about 10%. Therefore, how to protect the pod to reduce the ineffective buds, flower pods, pod rate has become an important issue in the production and scientific research of broad bean. Since 1964, we