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红铃虫为害的虫害花,绝大部分都要脱落。虽然棉株在没有任何虫害的情况下,也约有70%要脱落。如果所有的虫害花都包含在自然脱落的数量之内,那就没有必要去介意这种为害。但事实上,谁也无法去确定那些虫害花,究竟有多少是它们的本来就一定会脱落的。有虫害花的棉株,它们的结铃或脱落与没有虫害花的棉株有些什么不同的表现?一株棉花上,要有多少虫害花就可使这些不同的表现更较突出。可惜我们还一直少有注意到,在不同虫害程度的棉田里,一株棉株上,最多能有几朵虫害花。从虫害花最多的到没有虫害花的棉株又
Red bollworm pest damage flowers, most of them have to fall off. Although cotton plants in the absence of any pests, about 70% to fall off. If all the pests and flowers are included in the number of natural shedding, then there is no need to mind the damage. However, in fact, no one can determine the pests and flowers, how many of them will certainly fall off. What are the different manifestations of cotton plants that have flower pests, whether they are boll or detached and those that do not have insect pests? How many pests do flowers have on a cotton plant can make these different manifestations more conspicuous. Unfortunately, we have also rarely noticed that in cotton fields of different pest levels, there can be up to a few insect pests on a cotton plant. From the largest pest flowers to the cotton plants without pests flower again