麦类作物上的蚜虫近年发生普遍,直接影响了麦子的收成。为此,今年我们在乃东县雅龙河下游的耕作区,对麦类作物的蚜虫作了调查观察。一、麦类作物蚜虫种类及优势种: 据今年的观察与调查,在本地麦类作物上分布为害的蚜虫种类有麦无网长管蚜、麦长管蚜和黍蚜。其中以麦无网长管蚜为发生数量最多。从越冬一直到抽穗后期,无网长管蚜始终占优势,在蚜虫发生盛期无网长管占三分之二以上,为害部位多在叶片和茎杆 Aphids on wheat crops have been widespread in recent years and have a direct impact on wheat harvest. For this reason, we investigated the aphids of wheat crops this year in the farming area downstream of Arong River in Naidong County. First, the wheat crop aphid species and dominant species: According to this year’s observations and surveys, distributed in the local wheat crop aphid species are wheat without a net long aphids, wheat aphid and aphids. Among them, the number of wheat aphids was the largest. From winter to late heading, no long-aphids have always dominated the aphids in the peak of no net long tube account for more than two-thirds of the damage in more parts of the leaves and stems