麦田食蚜蝇幼虫空间分布型的初探

Preliminary Study on the Space Distributed Pattern of Syrphus Fabricicus Larva in Wheat Field

采用“频次法”、“指标法”等 ,对麦田食蚜蝇的分布型进行了探讨 ,结果表明 :麦田食蚜蝇幼虫在田间分布型为疏密相间的负二项式分布 ,属聚集分布。聚集分布的原因是由昆虫行为引起的 。

In order to make Syrphus Fabricius fully control wheat aphid, the preliminary study on its distributed pattern through 'frequency' and 'index' was conducted in the paper. The result showed that the distributed pattern of Syrphus Fabricius larva in wheat field was negative two terms distribution, one of assembled distribution. The main reason was due to the conduct of insects, perhaps related to the eggs laid near aphid mass in wheat field.