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为明确甘蔗间作玉米对亚洲玉米螟Ostrinia furnacalis(Guenée)发生和为害的控制作用,于2012—2013年在云南省元江县甘蔗种植区设置甘蔗间作玉米小区,采用目测法和马氏网法系统调查了该生境下亚洲玉米螟卵块密度与卵粒密度、蛀孔密度与百秆虫量、寄生性天敌昆虫种类及其种群动态。结果表明:与甘蔗间作种植的玉米上亚洲玉米螟落卵量、蛀孔密度、百秆虫量均明显低于单作玉米田,2012和2013年,间作玉米上百株卵块数比单作玉米分别减少了29.32%和35.73%,每卵块所含的卵粒数分别减少了34.22%和51.02%,百秆玉米蛀孔数分别减少了42.53%和31.25%,百秆虫量分别降低了58.18%和52.73%。间作田中亚洲玉米螟的3种主要寄生蜂螟蛉绒茧蜂Apanteles ruficrus、黄眶离缘姬蜂Trathala flavoorbitalis和大螟钝唇姬蜂Eriborus terebrans的种群密度显著高于单作玉米田,而数量较少的广大腿小蜂Brachymeria lasus及广黑点瘤姬蜂Xanthopimpla punctata种群密度在间作与单作田间无显著差异。表明甘蔗间作玉米对亚洲玉米螟的发生为害具有明显的控制作用,可用于亚洲玉米螟的生态控制。
In order to clarify the control effect of intercrop corn on the occurrence and damage of Ostrinia furnacalis (Guenée), a sugarcane intercropping corn plot was set up in sugarcane planting area of Yuanjiang County, Yunnan Province from 2012 to 2013. The visual inspection and Markov net system Under this habitat, the egg mass density and the egg density, the density of borer and the number of stems, the species of parasitic natural enemies and their population dynamics of the Asian corn borer were studied. The results showed that the number of eggs, density of bore holes and the amount of stems and stems of Asian corn borers intercropped with sugar cane were significantly lower than those of monocrop corn fields. In 2012 and 2013, Decreased by 29.32% and 35.73%, respectively. The number of ova contained in each egg was reduced by 34.22% and 51.02%, respectively. The number of bore holes in 100-stem corn decreased by 42.53% and 31.25% And 52.73%. The population density of three dominant parasitoid beetle Apanteles ruficrus, Trathala flavoorbitalis and Eriborus terebrans of Intercropping Tanaka were significantly higher than those of single cornfield Of Brachymeria lasus and Xanthopimpla punctata had no significant difference in intercropping and monoculture. The results showed that intercropping of sugarcane with corn had a significant control effect on Asian corn borer and could be used for ecological control of Asian corn borer.