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药剂防治是同农作物病虫害作斗争的重要措施之一,合理使用农药能经济有效防治病虫害,夺取农业丰收;使用不当,则带耒相反的结果。合理使用农药,应当是用药量要省,施药质量要高,防治效果要好,对人、畜、作物安全,避免或推迟害虫产生抗药性,省工,对生态系影响甚小等。根据这些原则,我所从1975年起,连续两年采用内吸性新药剂,对晚稻秧苗进行处理,以达到治虫效果。试验示范面积每年均在30亩以上。现将结果整理如下:
The prevention and control of pesticides is one of the important measures to combat pests and diseases of crops. The rational use of pesticides can effectively prevent and control pests and diseases and seize the harvest of agriculture. If used improperly, the opposite result is taken. Rational use of pesticides, should be the dose of provinces, high quality pesticides, prevention and control is better, people, livestock and crop safety, to avoid or delay the emergence of pest resistance, labor, little impact on the ecosystem. According to these principles, from 1975 onwards, we have adopted new systemic drugs for two consecutive years to treat late rice seedlings in order to achieve the pest control effect. The pilot demonstration area is more than 30 mu each year. The results are now organized as follows: