| 摘要: |
| 通过调查麦红吸浆虫幼虫在小麦穗上的分布和危害特点,进一步明确:麦穗上麦红吸浆虫幼虫聚集分布的田间分布格局与虫口密度无关;麦红吸浆虫在麦穗上的分布和危害与麦穗大小和受害部位有一定的关系。就麦穗大小而言,以中型穗上虫量最多,受害最重;大型穗次之;小型穗上虫量最少,害最轻。就麦穗受害部位而言,以中部虫量最多,受害最重;下部次之;上部虫量最少,受害最轻。 |
| 关键词: 麦红吸浆虫 小麦 分布特点 危害特点 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(39770499) |
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| Distribution and damaging characteristics of wheat blossom midge,Sitodiplosis mosellana(Gē hin)(Diptera: Cecidomyiidae) on wheat heads |
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WU Jun xiang,YUAN Feng,SU Li,WU Jun xiang,YUAN Feng,SU Li,WU Jun xiang,YUAN Feng,SU Li
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| Abstract: |
| This paper deals with the distribution and damaging characteristics of wheat blossom midge,Sitodiplosis mosellana(Gē hin), on wheat heads. It is further cleared that the distribution pattern of larva is not in relation to the larva density on what heads. The distribution and infestation of larval wheat midge is affected by head size and infested location to a certain extent.There aremost numerous larvae and most serious infestation on middle-size head, next to big-size and the least on small-size according to the headsize. Or there are most numerous larvae and most serious infestation in the middle-part, next to the bottom-part and the least in the top-part according to the infested location.On the basis of the above notes, it is suggested that a rational proportion of big-middle-and small-size heads should be sampled and a whole head should be investigated. |
| Key words: wheat blossom midge (Sitodiplosis mosellana) wheat distribution characteristic infestation characteristic |
