农田不同钾素肥力状况及小麦施钾效应研究

Different Potassium Fertility Condition in the Farmland and Potassium Application Effect on Wheat

小麦施用钾肥后产量显著增加,经济效益十分明显。土壤基础养分较高时,K2O施用量为135 kg/hm2时小麦产量最高,较对照增产770 kg/hm2,增产率15.0%;土壤基础养分较低时,K2O施用量为90 kg/hm2时小麦产量最高,较对照增产688 kg/hm2,增产率19.9%。

The wheat yield and economic efficiency could be increased after applying potassium fertility. When the basic nutrient contain was high, the optimum fertilization was 135 kg/hm^2. The wheat yield increased 770 kg/hm^2 compared with the control, the increment ratio was 15.0%. When the basic nutrient contain was low, the optimum fertilization was 90 kg/hm^2. The wheat yield increased 688 kg/hm^2 compared with the control, the increment ratio was 19.9%.