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本文报告一种防治水稻螟虫的杀虫双新剂型和使用效果。含有效成份5％的杀虫双大粒剂,每公斤含2000粒左右,在每亩1—1.25公斤的用量下,药效显著优于六六六、呋喃丹及杀虫脒等残留和高毒性农药。处理一亩田只需数分钟。在七个县和四个农场共266440亩稻田的示范试验中,防治效果达84.5—100％。杀虫双在田水中扩散迅速,24小时内即可扩散分布到全田。持效期较长,可达两周之久。但在蝗虫已蛀入稻茎后施用大粒剂,有效施药期只有3—4天。本文对杀虫双大粒剂的使用技术进行了经济效益、社会效益和生态效益方面的评价。
This article reports a new pesticidal insecticidal formulation and effect on rice stem borers. The insecticidal double-large granules containing 5% of active ingredient have a per kilogram content of about 2,000 and the effect is superior to that of the six-six-six, carbofuran and chlordimeform residues at the dosage of 1-1.25 kg per mu. pesticide. It takes only a few minutes to process a mu of land. In a demonstration experiment of 266440 mu of paddy fields in seven counties and four farms, the control effect reached 84.5-100%. Insecticidal double in the rapid spread of water, spread within 24 hours spread to the whole field. Persistence is longer, up to two weeks. However, locusts have been stung into the rice stems after the application of large particles, the effective application period of only 3-4 days. This article evaluates the economic benefits, social benefits and ecological benefits of the insecticide double-granule using technology.