麦蚜聚集与扩散行为的初步研究

Preliminary Study on Aggregation and Dispersion Behaviors of Wheat Aphids.

研究种群空间格局(spatial pattern)为我们了解昆虫的有关行为提供了一种有效途径,它一方面揭示了种群个体在某一时刻的行为习性。

The aggregation and dispersion behaviors of Macrosiphum avenae and Rhopalosiphym padi are studied on wheat fields in Luohe county of Henan province, with the method of population spatial pattern investigation.The results show that these two species have the same seasonal aggregation peaks, i.e., in early April and mid-May, in their successive dispersion processes. Although the spatial pattern of the two aphid populations are similar among wheat plants, their aggregation and dispersion are obviously different among different parts of the plant,as the result of natural selection and adaptation. Basic principles are put forward for the rational control of wheat aphid.