甲霜铜防治马铃薯晚疫病效果显著马铃薯是我县传统的冬种夏收作物，常年种植面积６万多亩，由于生长中后期常遇上梅雨天气，晚疫病发生十分频繁，对产量造成严重威胁。一般年份损失１～２成，重发年份损失５成以上，甚至绝收。为寻找经济、高效、安全杀菌剂在生产上推广应... The effect of A cream on preventing potato late blight is remarkable. Potato is the traditional winter seed and summer harvest in our county. The perennial planting area is more than 60,000 mu. Due to the frequent rainy season in the mid and late growing season, late blight occurs very frequently and poses a serious threat to yield. 1 to 2 percent loss of the general year, repeat the loss of more than 50% of the year, or even absolute. In search of economic, efficient, safe fungicides in the production of promotion should be ...