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(一)我省,由于气候适宜,耕作栽培制度复杂,病虫发生种类繁多,仅水稻就有180余种,其中害虫150余种,病害30余种,棉花病虫150多种,其中害虫130余种,病害20余种。所以,历年来,主要作物的主要病虫,发生普遍,危害严重。水稻因各种病虫综合危害的产量损失,经我省1980—1982年3年,计183丘,225.271亩,分未施药对照和施药防治稻田对产量影响的测定结果:
(I) In our province, due to the suitable climate, the tillage and cultivation system is complex and there are many kinds of pests and diseases. There are over 180 species of rice alone, including more than 150 kinds of pests, more than 30 kinds of diseases and more than 150 kinds of cotton pests, including 130 pests More than species, more than 20 kinds of diseases. Therefore, over the years, the major pests and diseases of major crops have been widespread and devastating. Rice production due to a variety of pests and diseases of the loss, by the province 1980-1983 three years, 183 mounds, 225.271 acres, no application of pesticide control and control of rice yield on the measured results: