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一、甘蔗绵蚜:其主要习性是无翅成虫、若虫都有群集性,怕光,遇到强烈的日光照射大多迁移;若虫比成虫容易行动,爬行较快。一般上午10时前都集中于叶背,10时后开始行动,直到午后2时20分到3时后才集中一起。 绵蚜繁殖快,世代数多,在防治上应特别注意“防重于治”。①农业技术防治。种植抗虫品种,加强田间管理;甘蔗收获后及时烧掉田间残留物,消灭虫源。②保持利用天敌。瓢虫、食蚜蝇等是捕食绵蚜的益虫,要进行保护和利用。③药剂防治。可用一些有触杀作用农药,但必须喷至
First, sugarcane cotton aphid: Its main habit is wingless adults, nymphs have clustering, fear of light, encounter strong sunlight mostly migrate; nymphs easier than adults, crawling faster. Normally, 10 o’clock in the morning, they concentrated on the Ye Bei and started operating after 10 o’clock. They did not get together until after 2.20 pm and after 3 o’clock PM. Cotton aphids reproduce fast, generations and more in the prevention and control should pay special attention to “prevent weight-based governance.” ① agricultural technology control. Planting insect-resistant varieties, strengthen field management; sugar cane burned in time after the field residue, eliminate the source of insects. ② maintain the use of natural enemies. Ladybugs and Hoverfly are the beneficial insects that prey on cotton aphids and should be protected and used. ③ pharmaceutical control. Some pesticides can be used to kill the role, but must be sprayed to