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河北省大名县卫东林场宋自忠、宋墨禄同志,1983年在该林场进行了呋喃丹防治杨蚜的试验。试验于5月1日布置,使药方法是在小区内用铁锨挖穴4行,每行50穴,穴深20厘米。先将各剂量药剂掺一脸盆潮湿砂土,充分搅和,然后均匀点入穴内,覆土踏实,浇足墒水。呋喃丹在苗木体内具有很好的内吸传导作用,应用其防治杨蚜,不仅可有效地控制杨蚜为害,同时对杨蚜的天敌如飘虫、草蜻蛉、食蚜虻、蜘蛛等未发现有毒害作用。应用呋喃丹防治杨蚜,其效果随使用剂量的大
Song Zizhong and Song Meilu of Weidong Forest Farm, Daming County, Hebei Province, conducted a test of prevention and cure of aphids on the farm in 1983. The experiment was arranged on May 1, so that the medicine method was to dig four holes with iron 锨 in the district with 50 holes in each row and a hole depth of 20 cm. The first dose of mixed dandy basin with a dose of wet sand, stir, and then evenly into the hole, soil compaction, pour enough water. Carbofuran in the seedling body has a good internal absorption conduction role, the application of its prevention and control of aphids, not only can effectively control the aphid damage, while the natural aphids such as the Aphis gossypii, lacewing, lacewing, food aphids, spiders were not found Toxic effect. Application of carbofuran control aphids, its effect with the use of large doses