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重庆市种子管理站根据全市历年病虫草鼠害发生情况、作物品种布局等因素进行初步分析,预计2017年主要农作物病虫草鼠害发生程度为4级,发生面积9300万亩(次)左右。1.水稻病虫预计发生程度为4级,发生面积2500万亩(次)左右。其中:二化螟发生程度为4级,发生面积800万亩(次)左右;稻飞虱总体发生程度4级,其中渝西部1~2级,渝中部及渝东北部3~4级,渝南部发生程度为
Chongqing Municipality Seed Management Station based on the city's pest and disease rodent pests over the years, the distribution of crop varieties and other factors for a preliminary analysis is expected in 2017 the main crop pest, rodent pest occurrence level 4, the occurrence of an area of 9300 mu (times) or so. 1. Rice pests and diseases are expected to occur at a level of 4, with an area of about 25 million mu (times). Among them: the incidence of Chilo suppressalis 4, the area of 800 mu (times) about; the overall occurrence of planthoppers level 4, of which 1 to 2 in western Chongqing, Yuzhong and northeastern Chongqing 3 to 4, Chongqing The degree of occurrence in the south is