摘要
１９９２～１９９５年于北京对主要天敌东亚小花蝽在植被多样化苹果园与邻近菜地、玉米田等生境之间繁殖扩散的互作关系进行了研究。结果表明５月上旬至６月中旬，东亚小花蝽主要在果园内夏至草和覆盖作物紫花苜蓿及苹果树冠之间互迁繁衍；６月中、下旬，由于园内生境的改变，大量东亚小花蝽飞离果园，迁入邻近菜地和玉米田内建立种群；至９月下旬，进入滞育状态的东亚小花蝽雌成虫回迁至园边夏至草上越冬。研究指出果园植被多样化，有利于东亚小花蝽的发生和增殖，从而更好地发挥天敌控制害虫的作用。
Studies on the occurrence and dispersion of Orius sauteri in relation to ground cover vegetation in apple orchard and adjacent farms were carried out in Beijing during 1992￣1995. Results showed that O. sauteri overwintered as female adults on weeds such as Lagopsis supina and Hemistepta lyrata and continued to prey on aphids on these plants in early season. When L. supina gradually dried up in June, O. sauteri began to move to alfalfa and built up quickly, then dispersed to apple trees. As aphids and mites populations soon decreased rapidly on these plants in the orchard, O. sauteri adults migrated to adjacent vegetable and corn fields in late June. At the end of September they returned to apple orchard and overwintered on L. supina and H. lyrata. It is pointed out that diversity of ground cover vegetation in the apple orchard is favorable to the augmentation of O. sauteri and hence increase the efficacy of biological control of insect pests.
出处
《中国生物防治》
CSCD
1998年第4期148-151,共4页
Chinese Journal of Biological Control
基金
国家"八五"科技攻关资助
