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棉株本身对于现蕾至初花期的蕾损失具有很强的补偿能力,这种补偿能力随地块的肥、水条件的改进而增强。在目前施肥水平下,有灌溉条件的高肥棉田(近三年平均亩产皮棉130斤以上),二代棉铃虫百株累计卵量三百粒以下不施药,容许二代幼虫适度为害,并在6月底不迟于7月初之前,进行人工摘蕾,使每株棉花损失(虫咬加手摘)早期蕾6—8个,可以达到省药省工又增产的目的,从而显著提高经济生态学效益,这已为1983年和1984年连续
The cotton plant itself has a strong ability to compensate for the bud loss from budding to early flowering. This compensatory ability is enhanced with the improvement of fertilizers and water conditions in the plots. Under the current fertilization level, high-fertilized cotton fields with irrigated conditions (over 130 kg of average lint per mu in recent three years), no more than 300 calluses of second-generation cotton bollworm, And at the end of June no later than the beginning of July, manual artificial bud extraction, so that each cotton loss (insect bites plus hand picking) early bud 6-8, you can save money and save labor and increase production so as to significantly improve the economic and ecological Benefit, which has been continuous for 1983 and 1984