论文部分内容阅读
1.玉米病毒病:主要包括粗缩病和花叶条纹病。两种病害均能从幼苗到抽穗侵染玉米植株,且发病越早危害越重。近几年,此类病害日趋严重,若防治不利,常造成不同程度的减产,甚至绝收。防治措施如下:1.1 选择抗病品种,以减少感病品种的种植面积。1.2 药剂拌种:可用20%呋喃丹种衣剂按药种1:40-50的比例包衣种子,或选用60%3911、50%甲胺磷等内吸性有
1. Corn virus disease: mainly including rough and mosaic leaf stripe disease. Both diseases can infect corn plants from seedling to heading, and the harder they are, the earlier they are. In recent years, these diseases have become increasingly serious. If prevention and control are unfavorable, they often result in different levels of yield reduction or even absolute failure. Prevention and control measures are as follows: 1.1 Select resistant varieties to reduce susceptible varieties of planted area. 1.2 Pharmacy seed dressing: available 20% carbofuran seed coating drugs according to the ratio of 1: 40-50 coated seeds, or choose 60% 3911, 50% methamidophos and other internal absorption have