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1.在缺钾的土壤中施用钾肥,具有显著的增产作用。欲取得350—400斤/亩的菜籽产量,必须施用20—50kg/亩硫酸钾。但是,20、30、40、50kg/亩各处理间差异不显著,故在实际生产上每亩仅施用20kg即可。这样既可增加产量,又经济用肥。 2.施用钾肥比不施的,各生育时期的叶面积系数或角果面积系数都有不同程度的增加。 3.施用钾肥比不施的,植株干物重和净光合作用生产率在各生育时期有不同程度的增加。 4.施用钾肥比不施的,植株经济性状良好,并有防止倒伏的作用。
1. Potassium application in potash-deficient soil has significant yield-increasing effect. To obtain 350-400 kg / acre of rapeseed production, you must apply 20-50kg / mu potassium sulfate. However, 20,30,40,50 kg / acre difference between the various treatments is not significant, so the actual production of only 20kg per acre can be applied. This will increase production and economic fertilizer. Compared with the non-application of potassium fertilizer, the leaf area coefficient or the fruit-corner area coefficient of each growth period increased to some extent. Compared with the non-application of K fertilizer, the dry matter weight and net photosynthesis productivity increased with different degrees in each growth period. 4 than the application of potassium fertilizer, good economic performance of plants, and to prevent the role of lodging.