Interspecific competition between Tribolium castaneum and Cryptolestes femigineus was studied at 30℃ ,75 % RH and Votka-Volt-erra equation was used to simulate the competition. The results showed that population numbers of T. castaneum and C. ferrugineus under single rearing condition were more than that under mixture rearing condition. The interspecific competition( resource competition type) between the two species was remarkable. Population number of T. castaneum under single rearing and mixture rearing condition was greater than that of C. femigineus. The two species could coexist steadily under mixture rearing condition and T. castaneum was dominant species in the competition system.%在30℃、75％ RH条件下研究赤拟谷盗Tribolium castaneum与锈赤扁谷盗Crptolestes ferrugineus的种间竞争,并采用Votka-Volterra种间竞争模型进行拟合.结果表明,赤拟谷盗与锈赤腐谷盗混合饲养时的种群数量均小于单独饲养时的种群数量,两物种之间存在着显著的种间竞争关系.属于资源利用型竞争;单独饲养和混合饲养条件下赤拟谷盗的种群数量均大于锈赤扁谷盗的种群数量;混合饲养条件下两个物种可以共存,并形成稳定的平衡状态,在这个竞争系统中,赤拟谷盗为优势种.
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