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本试验利用铁皮仓桶模拟粮堆实际情况,分别对小麦中的玉米象、谷蠹、杂拟谷盗的单一种群以及混合种群的种群动态、种间竞争进行了研究,并建立了相应的模拟模型。结果表明,粮堆表层的种群密度大大高于其它层次。种群在低密度时,上升缓慢。整个变化过程呈“S”形上升。玉米象的种群上升最快,其次为谷蠹、杂拟谷盗。在温度较高时,谷蠧的竞争超过了玉米象,杂拟谷盗的竞争能力最弱,玉米象、谷蠹的取食加快了杂拟谷盗的种群发展。
In this experiment, the actual situation of paddy pallets simulated grain pound was studied. The population dynamics and interspecific competition of single population and mixed population of corn, cinerea and miscellaneous grains in wheat were studied, and the corresponding simulation model. The results show that the population density of the surface layer of the grain heap is much higher than the other layers. Population at low density, rising slowly. The entire process of change was “S” -shaped rise. The population of corn elephant rose fastest, followed by valley beetle, miscellaneous cereal. When the temperature is high, the competition of corn stalk is more than that of corn. The competition ability of corn stalk is the weakest. The feeding of corn and cinerea accelerates the population development.