摘要
早春果园间作的3种绿肥上节肢动物类群有3-8种,其中植食性生物以蚜虫和叶螨为优势种。毛叶苕子上优势天敌为东亚小花蝽,三叶草为瓢虫,紫花苜蓿为东亚小花蝽和蜘蛛。到苹果生理落果期,毛叶苕子上天敌种群密度东亚小花蝽45-130头/m2,瓢虫15-25头/m2,蜘蛛15-42头/m2;三叶草上瓢虫43-72头/m2,蜘蛛15-32头/m2,东亚小花蝽,6-10头/m2,蚜茧蜂15-72头/m2;紫花苜蓿上东亚小花蝽15头/m2,蜘蛛15头/m2,瓢虫7头/m2左右。果园间作毛叶苕子更利于叶螨天敌东亚小花蝽的春季繁殖。
Investigation was carried out in an apple orchard in spring 2004, where 3 green manure crops, including vetch white clover and alfalfa were grown in interrow. 3 to 8 species of arthropods were found. The dominant phytophagous species were aphids and mites. The dominant natural enemy was Orius sauteri Poppius on vetch ladybird beetles on white clover, and O. sauteri Poppius and spiders on alfalfa. At the end of apple fruit setting stage,the densities of O. sauteri Poppius ladybeetles and spiders on vetch were 45 to 130 per m2, 15 to 25 per m2 and 15 to 42 per m2, and on alfalfa were 15 per m2,15 per m2 and 7 per m2 respectively. The results indicated that growing vetch in apple orchards could promote the propagation of O. sauteri Poppius.
出处
《果树学报》
CAS
CSCD
北大核心
2005年第4期419-421,共3页
Journal of Fruit Science
基金
科技部科技基础平台项目(2003DIA6N003)。
关键词
天敌
果园
绿肥
Natural enemy
Apple orchard
Green manure crop
