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在日本水稻生产中,用以灭虫农药的费用一向很高,仅1972年杀虫剂的销售额就高达450亿日元,这样大量使用农药,不但使害虫产生了抗药性,而且产生了公害。为了从根本上解决虫害问题,近几年来,开始进行抗虫育种的研究工作。一、二化螟根据简井1972年的报告,对二化螟(Chilo suppressalis Walker)第一代,水稻耐虫性可用幼虫的成活率和它在稻株内移动性的大小作指标。对于抗虫的机制,已知雌虫产卵选择性,
In Japan’s rice production, the cost of pest control pesticides has always been high. In 1972, pesticide sales were as high as 45 billion yen. Such extensive use of pesticides not only made the pests resistant but also caused public nuisance . In order to fundamentally solve the pest problem, in recent years, research work on insect-resistant breeding began. I. Chilo suppressalis According to the report of Jian-wei in 1972, the survival rate of larvae and its mobility in rice plants of the first generation of Chilo suppressalis Walker were used as indicators. For the insect-resistant mechanism, it is known that the female spawns with selectivity,