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利用自然种群生命表方法 ,研究了甜玉米品种抗虫性差异 ,斯氏线虫、玉米螟赤眼蜂对亚洲玉米螟种群系统的生态控制 ,根据不同卵量水平初步组建了第 5代亚洲玉米螟生态控制系统。结果得出 :亚洲玉米螟为害的生态控制系统由人工生态控制系统和自然控制系统两大部分组成 ,主要通过调控人工生态控制系统中的生态控制措施来达到生态控制目标。当甜玉米品种为穗甜 2号 ,卵密度为 18(块 / 10 0株 )时 ,不采取人为生态控制措施即可控制亚洲玉米螟的为害 ,即在人工生态控制系统内 ,利用穗甜 2号对亚洲玉米螟的抗性即可达到生态控制目标 ;当甜玉米品种为粤甜 1号 ,卵密度为 18或 35 (块 / 10 0株 )时 ,在人工生态控制系统内释放玉米螟赤眼蜂或撒施线虫颗粒剂均可达到生态控制目标 ;当甜玉米品种为粤甜 1号 ,卵密度为 6 2 (块 / 10 0株 )时 ,则要在人工生态控制系统内同时释放玉米螟赤眼蜂和撒施线虫颗粒剂 ,才能达到生态控制目标。通过生态控制系统的建立 ,为甜玉米的无公害化生产提供了一条切实可行的害虫控制途径
The natural population life table method was used to study the difference of insect resistance in sweet corn varieties. The ecological control of the Asian corn borer, Ostrinia furnacalis and Trichogramma ostriniae, on the Asian corn borer population was established. Based on the different egg levels, the 5th generation Asian corn borer Ecological control system. The results showed that the ecosystem control system of Asian corn borer was composed of two parts: artificial ecological control system and natural control system, which achieved ecological control mainly by controlling ecological control measures in artificial ecological control system. When the sweet corn variety is spike sweet 2 and the egg density is 18 (block / 10 plants), the control of the Asian corn borer could be controlled without artificial ecological control measures, that is, in the artificial ecological control system, The resistance to the Asian corn borer can achieve the goal of ecological control. When the sweet corn variety is Yuetian 1 and the egg density is 18 or 35 (block / 100), the release of corn borer The results showed that when the sweet corn variety was Yuetian 1 and the egg density was 62 (100 per plant), the corn was also released in the artificial ecological control system Trichogramma ostriniae and cast nematodes granules in order to achieve ecological control objectives. Through the establishment of ecological control system, it provides a practical pest control approach for the pollution-free production of sweet corn