水稻干尖线虫病近年来在浙江省嘉兴城区晚稻丙620品种上发生严重,1989年全区种植丙620 24000亩,发病面积达17300多亩、占种植面积的72％以上。1990年全区采用线菌清浸种消毒,防治面积达26700亩,占应防面积的90％以上,防治效果显著。 根据我区2年来16个组合感病品种上试 In recent years, rice dry tip nematode disease occurred in Jiaxing City, Zhejiang Province, where the late rice C-620 variety was seriously affected. In 1989, a total of 24,000 mu of C 620 were planted in the district, with an incidence of 17,300 mu, accounting for more than 72% of the acreage. In 1990, the whole region was treated with actinomycete soaking and disinfection, with the control area of ​​26,700 mu, accounting for more than 90% of the area to be prevented, and the prevention and treatment effect was remarkable. According to my district 2 years to test 16 combinations of susceptible varieties