Investigation on ecological influence resulting from trapping insects by using yellow sticky card in apple and pear orchards
Abstract：The ecological influence resulting from trapping insects by using yellow sticky card in apple and pear orchards was investigated. The cards were hung in the orchards before blooming. The insect species and their numbers on the cards collected back were identified and recorded. The results showed that there were obvious differences in the species and quantity of trapped insects among three areas. A large number of parasite wasps were trapped by yellow sticky card in orchards at Fengxian County in Jiangsu Provence, where there is large scale wheat field around the orchard. The rate of natural enemy to pest is 1：0.16 and 1：2.05 in the apple and pear orchard respectively. In the orchards at Shanxian County and Lingbao City in Henan Provence, which are located on the lower mountain, more pests were trapped and the rate of natu- ral enemy and pest is 1：2.92 and 1：1.46 respectively. More natural enemies were trapped in the pear or- chard at the suburb area of Zhengzhou City, The rate of natural enemy to pest is 1：0.24. Based on the results investigated , the yellow sticky card should be hung and removed in orchard according to the invironmental condition.
Keywords：Apple and pear orchardsYellow sticky cardAphidJanus piri Okamoto et MuramatsuNatural enemyEcological influence
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)