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通过1992—1978年的调查试验,初步明确了以下事实:本地越冬的麦长管蚜尚未羽化,田间已出现有翘成蚜;小麦苗期发现了穗期才能产生的穗型蚜;在冰冻期的高山上多次捕到有翅麦蚜;有翅成蚜大范围的“同期突发”现象;外来麦蚜占春季田间有翅蚜的98.8％以上。首次提出,在有本地蚜源的情况下,存在外来蚜源,且外来蚜源可以成为春季田间麦长管蚜群的主体。本文分析讨论了迁入蚜源的可能基地和须进一步研究的问题。
According to the investigation from 1992 to 1978, the following facts were preliminarily confirmed: the native winter aphid had overwintered and the emergence of aphid appeared in the field; the spike aphid was found in the wheat seedling stage; Of the total number of winged wheat aphids caught in the mountains; a winged aphid widespread “simultaneous burst” phenomenon; alien aphids accounted for more than 98.8% of the winged aphid in the field in spring. For the first time, there are alien aphid sources in the presence of local aphid sources, and alien aphid sources can become the main body of aphid populations in the field in spring. This paper analyzes and discusses the possible bases for migrating into aphids and the problems to be further studied.