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5％杀虫双大粒剂系杀虫双新剂型。粒径8毫米,粒重0.4～0.5克。中国农科院植保所研制,四川省乐山碱厂已生产。杀虫双大粒剂在水中很快崩解,有效成分很快扩散和被稻根吸收运转至根茎叶各部位,尤以茎杆和嫩叶含药量较高。因此,它对蛀茎害虫和危害心叶的害虫防效优异。四川水稻害虫以二化螟(一代和二代)、三化螟和稻蓟马为主。四川习惯于稻田边种桑养蚕,水剂喷雾(或弥雾)易污染桑叶,引起家蚕中毒死亡。为此,1982～1985年,我们对杀虫双大粒剂进行了使用技术条件研究及防治二化螟、三化螟、稻蓟马试验示范,以及对稻田生态环境影响的研究。
5% insecticidal double-particle system insecticidal double new formulations. Diameter of 8 mm, grain weight 0.4 to 0.5 grams. Plant Protection Institute of Chinese Academy of Agricultural Sciences, Leshan, Sichuan Province Alkali plant has been produced. Insecticidal double-large granules quickly disintegrate in water, the active ingredient quickly spread and was rooted in rice roots to absorb the operation of various parts of the rhizome, especially in the stems and leaves with high drug content. Therefore, it is excellent for controlling pest insects and endangered leaf pests. Sichuan rice pests to two Chilo suppressalis (first generation and second generation), Borer and rice thrips dominated. Sichuan is used to planting mulberry sericiculture in paddy fields. It is easy to pollute the mulberry leaves with water spray (or mist), causing death of silkworm poisoning. For this reason, from 1982 to 1985, we studied on the technical conditions of pesticide double-size granules and the prevention and control of the rice stem borers, the three rice borers, the rice thrips, and their impact on the ecological environment in paddy fields.