【摘要】 小区试验每公顷用霜霉威盐酸盐（ｐｒｏｐａｍｏｃａｒｂｈｙｄｒｏｃｈｌｏｒｉｄｅ）有效成分６００克、８００克、１０００克，发病初期叶面喷雾，对黄瓜霜病的防冶效果为６９．９～８２．３％，显著优于三乙膦酸铝（ｐｈｏｓｅｔｈｙｌ－Ａ１）每公顷有效成分２２５０克。大面积示范每公顷用霜霉威盐酸盐有效成分８００克，防效达７９．６％，增收黄瓜４４９４０公斤。更多还原

【Abstract】 he field trials were carried out for controlling Pseudoperonospora cuhensis on cucumber by propamocarb hydrochloride. The results showed that three dosages of propamocarb hydrochloride (600, 800 and 1000g A. I./ha)sprayed at begining stage of downy mildew of cucumber gave better control than phosethyl-Al did. The control effects are 69. 9～82. 3%, while the effect in demonstration at dosage of 800g propamocarb hydrochloride A. I. /ha was 79. 6%, and the increase in cucumber yield by 44940 kg/ha.更多还原