广西僮族自治区百色专区沿右江河谷平原,盛产甘蔗。每年5月份后,便受到甘蔗绵蚜的普遍为害,特别是7—11月,是发生为害高峰期,每平方寸可达211—274头,密集于叶背叶脉两侧,吸食蔗液,使叶变黄、枯死,并引起严重的煤病(叶变灰黑色)。 过去,多采用666或DDT防治,但效果不很理想。我站试用50％乐果乳剂(上 Baise area of ​​Guangxi Autonomous Region along the Youjiang River Plain, rich in sugar cane. After May each year, it will be the common harm of cotton cane cotton aphid, especially in July-November, is the peak of the occurrence of damage per square inch up to 211-274 head, dense on both sides of leaf dorsal veins, smoking sugarcane solution, Leaves turn yellow, dead, and cause serious coal disease (leaves gray and black). In the past, more use of 666 or DDT control, but the effect is not very satisfactory. I am standing trial 50% dimethoate (on