浙西南山地桃园生境天敌昆虫相对丰盛度调查

Investigation on the species of natural enemy insects in peach orchard in Lishui

采取吸查、网捕、人工采集和灯诱等方法采集调查,经鉴定和统计分析,浙江省西南部丽水市山地桃园有天敌昆虫38种,分属于7目20科,总群落的相对丰盛度为0.0659,捕食性天敌昆虫占主导地位。实施生草栽培的桃园有较多的天敌昆虫种类和数量,相对丰盛度在0.005以上的有:鞘翅目、膜翅目、脉翅目、螳螂目、半翅目、双翅目等6个目,草蛉科、瓢甲科、螳螂科、步甲科、猎蝽科、食蚜蝇科、茧蜂科和姬蜂科等8个科,大草蛉、黄缘青步甲、环斑猛猎蝽、小刀螂、中华草蛉、刀螂等6个种;相对丰盛度最大的目、科和种分别是:鞘翅目、草蛉科、大草蛉。在清耕桃园,天敌种类相对较少,其相对丰盛度较小。

The species of natural enemy insects in peach orchards were collected and investigated by methods of Absorption detection,catching with a net,manual collection,light trap and so on. The results of indoor identification showed that there were 38 kinds of natural enemy insects in peach orchards in Lishui City in southwest of Zhejiang Province. These insects belong to 7 orders,20 families,and the relative abundance was 0.0659 and the predatory natural enemy insects played a dominant role. There were a large number of natural enemy insects in peach orchards under sod culture,among which,6 orders,8 families and 6 species showed higher relative abundance above 0.005. The highest relative abundance was observed in Coleptera,Chrysopidae and Chrysopa septempunctata. However,the natural enemy insects in peach orchards with clean tillage were quite fewer.