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使用化学农药防治蔬菜病虫害,对夺取蔬菜丰收曾起到很大作用,但长期大量地不合理使用,对蔬菜的污染也日益严重。据省卫生防疫站1980年春节前夕在武汉市场上零星购得的小白菜样品53份进行检测的结果,有机氯的检出率为100％,有的样品六六六残留量高达2.11毫克/公斤。为此,1982年我们与武汉市蔬菜局、蔬菜研究所、洪山公社植保站组成协作组,在该公社北港、新路两大队试办千亩无公害蔬菜生产样板点。点上对蔬菜病虫害以农业防治为中心,开展综合防治,而减少化学农药,取得了良好的防治效果。点上全年上市200万斤蔬菜,有机磷残留量极低。据省农科院测试中心1982年10月19日对点上小白菜检测结果,有机氯农药滴滴涕残留量0.053毫克/公斤,比邻近队下降80％,远低于国家允许含量的标准。全样板所生产的蔬菜均已达到无公害蔬菜标准。其主要技术经验是:
The use of chemical pesticides to control pests and diseases of vegetables has played a significant role in capturing the bumper harvest of vegetables. However, it has been unreasonably used for a long time in large quantities and the pollution to vegetables has also become increasingly serious. According to the Provincial Health and Epidemic Prevention Station on the eve of the Spring Festival of 1980 in Wuhan market sporadically purchased samples of cabbage 53 were detected, the detection rate of organic chlorine was 100%, and some samples of 666 residues as high as 2.11 mg / kg . To this end, in 1982, we formed a collaboration group with Wuhan Vegetable Bureau, Vegetable Research Institute and Hongshan Commune Plant Protection Station to pilot a kilo-mu pollution-free vegetable production model at the two brigades of North Harbor and Xinluo in the commune. On the point of agricultural pests and diseases of vegetables as the center, to carry out comprehensive prevention and control, and reduce chemical pesticides, and achieved good control effect. Point 2000000 pounds of vegetables listed on the annual, very low residual organic phosphorus. According to Provincial Academy of Agricultural Sciences Test Center on October 19, 1982 on the point cabbage test results, organochlorine pesticide DDT residues 0.053 mg / kg, down 80% lower than the neighboring team, well below the national allowable levels. The whole model of vegetables produced have reached the standard of pollution-free vegetables. Its main technical experience is: