棉花进入开花结铃盛期,是形成产量的关键时期,也是多种害虫危害的猖獗时期,如不加强防治,直接影响棉花的产量和品质。 棉花中后期虫害的防治,应从中期(花、蕾期)抓起,控制后期(蕾、铃期)暴发成灾。针对不同虫情,中期可采用非药剂防治技术,后期则以药剂保护为主。 1.整枝、抹卵灭虫 棉铃虫、红铃虫以及盲蝽象等成虫,常产卵于棉嫩叶、叶尖和嫩头上。结合田间管 Cotton into the flowering period, is the key period for the formation of yield, but also a variety of pest hazards of rampant period, if not strengthen the prevention and control, a direct impact on cotton yield and quality. Pest control in the mid and late cotton should start from the medium (flower, bud stage), control late (bud, ring) outbreaks. For different insect conditions, the non-pharmaceutical use of medium-term control technology, the latter part of the main pharmacy protection. 1. Pruning, wiping the egg pest insects bollworm, pink bollworm and lizards and other adults, often lay eggs in cotton leaves, tip and tender head. Combination of field pipe