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土豆在很多地方被视为蔬菜,是我国继水稻、小麦、玉米之外第四大粮食作物,已上升到主粮的地位。根据全国农技中心组织专家会商分析预测,2015年土豆晚疫病在西南、西北、华北和东北等主产区可能偏重流行,发生面积预计3500万亩左右。化学防控必不可少。使用化学药剂防治土豆重大病虫害必须坚持尽量少用、适时使用、科学用药的原则,优先选择悬浮剂、水乳剂、
Potatoes are considered as vegetables in many places. They are the fourth largest grain crops in our country following rice, wheat and corn and have risen to staple food. According to the consultation and consultation among experts organized by the National Agricultural Technology Center, the potato late blight in 2015 may be prevalent in major producing areas in southwest, northwest, north China and northeast China, with an estimated area of 35 million mu. Chemical control is essential. The use of chemical pesticides to prevent major pests and diseases must adhere to minimize use, timely use, the principle of scientific medication, priority suspension, water emulsion,