磷酸二氢钾在多种作物上应用,都有良好的增产效果。近两年我们在花生上进行了不同生育期、不同磷酸二氢钾施用量的比较试验,取得了较好效果。试验连续两年,在三个不同生育期叶面喷施,亩用量分别为0.3、0.4和0.5斤,以喷清水为对照。供试品种“红花一号”。试验田为砂壤土,肥力中下等,pH5.2,速效氮85.4ppm,速效磷13.2ppm,速效钾66ppm,播种前未施其它肥料。夏播前茬为油菜,冬闲后次春播种 Potassium dihydrogen phosphate in a variety of crops, have a good yield. In the past two years, we conducted different growth stages on peanuts, and compared the application rates of different potassium dihydrogen phosphate, and achieved good results. Test for two consecutive years, in three different growth stages of foliar spray, mu were 0.3,0.4 and 0.5 kg, respectively, to spray water as a control. Test varieties “safflower one.” The experimental plots were sandy loam, middle-low fertility, pH 5.2, available nitrogen 85.4 ppm, available phosphorus 13.2 ppm, and available potassium 66 ppm. No other fertilizers were applied prior to sowing. Summer before sowing rape, winter leisure sowing the following spring