高锰酸钾防治西瓜主要病害试验对连茬瓜地，在瓜苗定植和苗期分别用５００倍的高锰酸钾药液灌根（每株０．５ｋｇ），可有效地控制和减轻枯萎病的发生，防效达８０％左右，残效期为１０－１５天。对已发生枯萎病的植株灌根，治愈率明显高于农抗“１２０”等农药。在西瓜苗... Potassium permanganate prevention and control of watermelon main disease experiment Continuous cropping melon, melon seedlings and seedling stage with 500 times the potassium permanganate solution irrigation (0.5kg per plant), which can effectively control and reduce the wilt Disease occurs, the control effect of about 80%, residual validity of 10-15 days. Fusarium wilt disease has occurred in irrigation, the cure rate was significantly higher than that of agricultural “120” and other pesticides. In watermelon seedlings ...