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本试验自1977年开始,以接红铃虫卵于棉花蕾,摘除棉花蕾和观察比较大田自然状态蕾害率下结铃数的方法,研究红铃虫为害棉花蕾对棉花产量的影响。四年的结果表明,在红铃虫为害花蕾期间,蕾害率的高低对棉花最终结铃数没有影响,按不同比例摘除棉花蕾,试验结果表明,即使是将当时的花蕾全部摘除,在植株生长的一生中摘蕾一次,对最终产量没有影响。也不增加霜后花。观察自然状态下红铃虫引起蕾害,其结果也表明了,蕾害率的高低对最终结铃数没有影响。经大面积大田验证表明,化学防治的棉田,能明显地降低虫害花率,但最终产量与不防治的相比,无显著的差异。四年的结果表明,红铃虫为害棉花蕾对棉花产量没有明显的形响。
The experiment began in 1977, to take pink bollworm eggs in cotton buds, cotton buds removed and observe the nature of the field compared to the number of bolls in the number of bolls, bollworm damage cotton buds on cotton yield. The results of four years showed that the degree of bud damage did not affect the final boll boll number of cotton bollworm during the damage buds of the red bollworm. The cotton buds were removed at different proportions. The results showed that even when all the buds were removed, Buds grow once in a lifetime, with no effect on the final yield. Do not add cream after the flower. Observe the natural state of red bollworm cause laceration, the results also showed that the level of laceration rate has no effect on the final number of bolls. The field tests showed that chemical control of cotton fields could significantly reduce the pest flower rate, but there was no significant difference between the final yield and the control. The results of four years show that cotton boll harvested by the red bollworm has no obvious effect on cotton yield.