邻近作物分布格局与地膜覆盖种植对马铃薯甲虫种群动态的影响

Effect of Neighboring Crops Distribution Patterns and Film Mulching on the Population Dynamics of Colorado Potato Beetle,Leptinotarsa decemlineata in Xinjiang

【目的】明确邻近作物分布格局和地膜覆盖种植在马铃薯甲虫生态调控中的作用。【方法】对比现有种植模式中,研究邻近作物种类差异对马铃薯甲虫种群数量变化的影响。【结果】不同邻近作物种类马铃薯田块内马铃薯甲虫种群时空规律基本一致,但其种群数量存在显著差异,邻近上一年寄主田块的马铃薯田受危害严重,随距离的增加危害逐渐减轻。【结论】邻近种植不同作物对马铃薯田块内的马铃薯甲虫种群数量动态有一定的影响,可通过种植格局调整方式进行马铃薯甲虫种群生态控制。

[ Objective] The study focuses on clarifying the role of neighboring crops distribution patterns and plastic film mulching cultivation in ecological regulation of Colorado potato beetle. [ Method]The present study compared the differences of Colorado potato beetle population in potato fields accompanied by different adjacent crops in existing cropping patterns. [ Result] There were basically the same population dynamic pat- terns among different potato fields with other different kinds of adjacent crops, but there were significant differ- ences among their population amount of Colorado potato beetle. Near the previous year＇s potato fields, the fields were damaged seriously, but the damage levels would be reduced with increasing distance between the potato fields. [ Conclusion] Planting different kinds of crops influences the population dynamic of Colorado po- tato beetle to a certain extent and the ecological control of the Colorado potato beetle population can be carried out by adjusting the planting pattern.