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5月上中旬,早稻移栽后开始进入分蘖期,中稻秧苗进入2叶1心期。这时,正是稻象甲危害盛期,也是稻象甲的防治适期。在早稻播后10天左右待施完除草剂和追肥后,每667平方米用克百威(呋喃丹)2公斤～2.5公斤拌细黄土20公斤均匀撒施。施药时保持田间水层深3.3厘米左右,并维持3天,以确保杀虫效果。中稻在秧苗1叶1心末期为防治适期,施药方法同上。采用以上方法既可防治地下稻象甲幼虫,又可防治稻象甲成虫,还可有效地兼治水稻螟虫和稻秆潜蝇等多种水稻害虫。
In mid-May, the early rice began to enter the tillering stage after transplanting, and the middle rice seedling entered the 2-leaf 1-period. At this time, it is the climax of the rice asphyxiation, but also the prevention and treatment of rice ascari. About 10 days after sowing in early rice to be applied after completion of herbicides and top dressing, every 667 square meters with carbofuran (carbofuran) 2 kg ~ 2.5 kg mixed fine loess 20 kg spread evenly. Spraying water field to maintain the depth of about 3.3 cm and maintained for 3 days to ensure insecticidal effect. Mid-season seedlings in the leaf 1 end of the heart for the prevention and treatment of period, the method of application ibid. The method can not only control the underground rice larvae but also prevent the adults of the rice larvae as well as effectively control a variety of rice pests such as the rice stem borers and the rice stem moths.