通过钾肥对春蚕豆的效应研究结果表明 ,钾肥有促进蚕豆养分的有效分配、提高光合效率和蚕豆品质的作用。其中在春蚕豆鼓荚期单施钾肥能使蚕豆株高降低 5 .7cm ,百粒重增加 6 .1 g,产量提高 2 40 .0 kg/ hm2 ,增产率为 6 .0 %。氮、磷、钾肥配合施用时以播种时施钾肥效果为佳 ,能使蚕豆株高降低 1 5 .5 cm ,百粒重增加 1 7.8g,产量提高 6 1 6 .7kg/ hm2 ,增产率达 1 3.0 % The study on the effects of potassium on the broad bean showed that potash fertilizer could promote the efficient nutrient allocation of broad bean and increase the photosynthetic efficiency and the quality of broad bean. Among them, the application of potash fertilizer in spring broad bean bean drum pod stage could reduce the plant height of broad bean by 5.7cm, the increase of 100g weight by 6 .1g, the increase of yield by 240. 0kg / hm2 and the increase of yield by 6.0%. Nitrogen, phosphorus and potassium fertilizers were applied at the time of sowing, which could reduce the plant height of broad bean by 15.5 cm, the increase of 100-grain weight by 1 7.8g and the yield by 6 1 6 .7kg / hm2, 1 3.0%