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梅县地区近年来改革了耕作制度,主要发展三季稻,1976年全区中稻面积约26万亩,占总稻田面积15％;同时扩大冬种小麦面积约三成,其他冬种作物和绿肥面积约五成。早稻还推广了“科六”、“广二矮”等迟熟高产品种,引起了水稻病虫害发生变化。为了解决改制后的病虫害问题,促进改制的顺利发展,我们进行了调查研究,现将结果整理于后。一、改制后主要病虫害的发生情况和防治措施
In recent years, Meixian County has reformed its farming system and mainly developed three-season rice. In 1976, the whole region had an area of about 26 million mu of rice, accounting for 15% of the total paddy field area. Meanwhile, the winter wheat area was expanded by about 30% and other winter crops and green manure area were about five to make. Early rice also promoted the “Ke VI”, “Guang Er short” and other late maturing high-yield varieties, causing changes in rice pests and diseases. In order to solve the problem of pests and diseases after the system reform and promote the smooth development of the system reform, we conducted a survey and research and the results are now sorted out. First, the major pests and diseases after the restructuring of the situation and prevention and control measures