论文部分内容阅读
四川省植保站预计,2012年四川省农作物病虫总体偏重发生(4级),发生面积1.8亿亩次。其中,小麦病虫中等发生(3级),发生面积2000万亩次;油菜病虫害偏重发生(4级),发生面积1200万亩次;水稻病虫偏重发生(4级),发生面积6500万亩次;玉米病虫中等发生(3级),发生面积1900万亩次。以条锈病、赤霉病、麦蚜、油菜菌核病、稻瘟病、稻曲病、水稻螟虫、稻飞虱、玉米螟和西藏飞蝗等为主。1、条锈病:预计2012年偏重发生(4级),重于去年,发生面积400万亩,重发区域集中在沱江、涪江、
Plant Protection Station in Sichuan Province predicts that the overall incidence of crop diseases and insect pests in Sichuan Province in 2012 will be on the 4th level with an area of 180 million mu. Among them, pests occurred moderately (level 3) with an area of 20 million mu; rape diseases and pests were prevalent (level 4) with an area of 12 million mu; rice pests and diseases were prevalent (level 4) with an area of 6500 mu Times; corn pests and diseases occurred moderately (level 3), with an area of 1900 mu acreage. Stripe rust, scab, wheat aphid, rape sclerotinia, rice blast, rice false smut, rice stem borer, planthoppers, corn borer and Tibet locusts mainly. 1, Stripe rust: It is estimated that partial occurrence will occur in 2012 (Grade 4), heavier than last year, with an area of 4 million hectares. The areas for re-issuance are concentrated in Tuojiang River, Fujiang River,