摘要
１９９３年在山东省寿光、泰安、淄博的苹果园大面积施用线虫 Ｓｔｅｉｎｅｒｎｅｍａ ｃａｒｐｏｃａｐｓａｅ Ａｇｒｉｏｔｅｓ防治桃小食心虫 Ｃａｒｐｏｓｉｎａ ｎｉｐｐｏｎｅｎｓｉｓ Ｗａｌｓｉｎｇｈａｍ，并作不同线虫剂量的比较试验，同时测定的土温、气温和相对湿度。结果表明，在２９９公顷苹果园，每公顷施用线虫１５亿，在适宜的温、湿度（土温２６．２℃－２７．１℃，气温２５．５℃－２９．５℃，相对湿度８０％－８９％）条件下，桃小食心虫的累计卵果率为０．４％～０．５％；而在气温过高，较干燥（土温为２６．５℃～２９℃，气温２９．５℃～３４℃，相对湿度为７６．８％）条件下，桃小食心虫累计卵果率为２．４％。每公顷施用７．５亿和３．７５亿线虫的果园，桃小食心虫的累计卵果率为１．５％～２．９％。以常规药剂处理的累计卵果率为１．５％和２．１％。清水对照的累计卵果率为２．８％与３．８％。说明应用昆虫病原线虫防治桃小食心虫能获得好的效果，值得大力推广。
In 1993 we controlled peach fruitborer Carposina nipponensis Walsingham in the apple orchards with nematode Steinernema carpocapsae Agriotes in a large scale in Shandong Province,the total treated areas were 299 hectares.The results showed that under the fitted conditions during spring nematodes(soil temperature from 26.2℃to 27.1℃,air temperature from 25.5℃to 29.5℃ and air relative humidity from 80% to 89%),the accumulated rate of apple fruits with eggs of peach fruitborer 20 days after treatment with 15×108 nematodes per hectare were from 0.4% to 0. 5%;by contrast ,under unfitted conditions during spring nematodes(soil temperature from 26.5℃ to 29℃,air temperature from 29.5℃to 34℃,air relative humidity was 76.8%),the accumulated rate of apple fruits with eggs of peach fruit-borer 20 days after treatment with 15×108 nematodes per hectare was 2.4%.And the accumulated rate of apple fruits with eggs of the pests after treatment with 735×108 nematodes per hectare and 3.75×108 nematodes per hectare were from 1.5% to 2.9%.At the same time,the accumulated rate of apple fruits with eggs of the pest by the normal chemical insecticides for controlling C. nipponensis were 1.5% and 2.1% respectively;the orchards of the check test just with water spring,the accumulated rate of apple fruits with eggs of peach fruitborer were 2.8% and 3.8% respectively.Within this result we suggest that the control of C.nipponensis with nematodes will greatly reduce the use of insecticides in orchards in China,it will certainly play a large part in reducing environmental disruption and pollution as well as avoiding the ever threatening development of insecticide resistance.
出处
《昆虫天敌》
CSCD
2000年第2期79-82,共4页
Natural Enemies of Insects
基金
中澳合作8929项目的部分内容
得到了ACIAR的资助。
关键词
桃小食心虫
土温
线虫
施用
苹果园
气温
药剂处理
大面积
对照
淄博
entomopathogenic nematode,Steinernema carpocapsae Agriotes,Carposina nipponensis Walsingham,developmental application
