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呋喃丹颗粒剂叶面施药防治褐稻虱,一般宜在低龄若虫期进行。根区施药是把呋喃丹拌泥,做成药球,深施在植株根部,经根部吸收后,再由植株中的输导组织转运至植株各部。因此,根区施药至呋喃丹农药的有效成份出现在褐稻虱取食部位植株基部叶鞘内,需要一定的时间。为了探明呋喃丹一次根区施药防治连作晚稻2—4代褐稻虱的适期,我们进行了本试验。试验材料和方法(一)试验材料:3%呋喃丹颗粒剂(系进口产品)。(二)试验方法:将3%的呋喃丹颗粒剂加细土拌匀,再加水掼韧,做成每颗约10克左右的药球,自7月27日水稻移栽这一天起至9月26日,每隔5天于2丛水稻中间手
Carbofuran granules foliar spray prevention and treatment of brown planthopper, generally should be carried out in the young nymphs. Root zone pesticide is to use fudan Dan muddy, made of medicine ball, deep applied to the roots of plants, absorbed by the roots, and then transported by the plant tissue to the various parts of the plant. Therefore, the root zone pesticide application to the effective ingredient of carbofuran pesticide appears in the feeding site of the brown planthopper sheath at the base of the plant, take some time. In order to identify a root zone of carbofuran to control even the second generation of late rice brown planthopper second generation suitable period, we conducted the test. Test Materials and Methods (A) Test Materials: 3% carbofuran granules (Department of imported products). (B) Test Method: 3% carbofuran granules plus fine soil mix well, add water 掼 tough, made about 10 grams of each about medicine ball, since July 27 rice transplanting day until 9 On the 26th of the month, hands in the middle of the 2-bundle rice every 5 days