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当前位置: 首页 > 文章 > 麦长管蚜及其天敌消长的研究 沈阳农业大学学报 1992 (3) 227-230
Position: Home > Articles > The Population Tendancy of Macrosiphom auenae Fabricius and Its Natural Enemies Journal of Shenyang Agricultural University 1992 (3) 227-230

麦长管蚜及其天敌消长的研究

作  者：
李桂兰;戴宗廉
关键词：
麦长管蚜;天敌;虫源基数;气象条件
摘  要：
通过1978～1982年的田间调查,可以看出麦长管蚜田间消长动态是虫源基数、气象条件、天敌等诸因子相互作用的结果。虫源方面是迁入麦田的有翅蚜时间愈早,基数愈大,麦长管蚜发生愈重;气象条件决定于5月中下旬至6月上旬的气温和降雨量,5月中下旬的气温偏低,平均气温低于20℃和旬降雨量少于30mm时,有利于麦长管蚜的发生,而平均气温高于20℃、降雨高于30mm以上,不利于麦长管蚜的发生;试验还证明蚜虫与天敌单位之比高于100:1时,蚜量将会迅速增长,对麦田为害较重。
译  名：
The Population Tendancy of Macrosiphom auenae Fabricius and Its Natural Enemies
作  者：
Li Guilan;Dai Zhonglian (Department of Plant Protection, Shenyang Agricultural University)
关键词：
Macrsiphum avenae Fabricius natural enemies;;starting number of pest;;elimatic conditions
摘  要：
The field investigation from 1978 to 1982 showed that the dynamies of the species Macrosiphum avenae Fabricius depended on the reactions among the factors such as the starting number of this aphid, climatic conditions and natural enemies: The earlier the winged females of M avenae migrated into wheat fields and the larger the pest's starting number, the more densely the pest populated. The temperature and rainfall during the period from the late May to the early June were the main climatic contributors, that is, the climatic conditions could be favourable to the pest occurreance when the temperatur eand rainfall during this time were both low(ie, the average temperature was below 20℃) and the rainfai1 was less than 30mm during the late May conversely, the climatic conditions could be unfavourable if both the temperature and the rainfall were more than the above mentioned. The field experiments also proved that the number of M. avenae population could increase rapidly and thus cause severe damages when this aphid individuals and the units of their natural enemies were in a ratio fo a hundred to one.

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