THE EXTENT OF MONOCULTURE AND ITS EFFECTS ON INSECT PEST POPULATIONS WITH PARTICULAR REFERENCE TO WHEAT AND COTTON
THE EXTENT OF MONOCULTURE AND ITS EFFECTS ON INSECT PEST POPULATIONS WITH PARTICULAR REFERENCE TO WHEAT AND COTTON
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DOI：
10.1016/0167-8809(83)90003-8
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发表时间：
1983-01-01
影响因子：
6.6
通讯作者：
ANDOW, D
中科院分区：
文献类型：
--
作者：
ANDOW, D
区域种植模式的变化对害虫种群的影响尚未得到很好的研究。本文回顾了实证文献，并为这些影响建立了一个理论框架。区域种植模式的变化确实影响到昆虫种群，至少在一种情况下，栅栏行和灌木丛的存在为附近的农业生态系统带来了净效益。在本文回顾的17项研究中，有15项讨论了棉花或小麦。就棉花而言，增加单作导致13种害虫种群增加，2种害虫种群减少。在小麦中，只有三个种群出现了增加，而七个种群没有受到影响或减少。大多数未受影响或减少的昆虫种群是多化性和寡食或多食的。所有增加的种群都是在他们所研究的地区单食作物的。小麦动物群中多化性、寡食或多食的比例高于棉花动物群。这可能解释了小麦动物群和棉花动物群对单作程度变化的反应之间的差异。其他因素可能是昆虫的游动性，寄主寻找能力，以及捕食者和寄生性的反应。
The effects of changes in region-wide cropping patterns on insect pest populations have not been well studied. This paper reviews the empirical literature and develops a theoretical framework for these effects. Changes in regional cropping patterns do affect insect populations, and in at least one case, the presence of fence rows and thickets provide a net benefit to the nearby agro-ecosystem. Of the 17 studies reviewed here, 15 discuss cotton or wheat. With cotton, increased monoculture leads to increases in 13 pest populations and a decrease in two. With wheat, increases occurred in only three populations, while seven were not affected or decreased. Most of the insect populations that were not affected or decreased are multivoltine and oligophagous or polyphagous. All of the populations that increased are monophagous on the crop in the region in which they were studied. A higher proportion of the wheat fauna is multivoltine and oligophagous or polyphagous than the cotton fauna. This may explain the difference between the response of the wheat fauna and the cotton fauna to changes in the extent of monoculture. Additional factors may be insect vagility, host-finding ability, and the response of the predators and parasitoids.