兴义雪梨园生态系统平衡的调控

djustment of Ecosystem Balance in Xingyi Snow Pear Garden

为综合运用自然气候、害虫天敌和人工干预技术措施调控兴义雪梨园生态系统的平衡,改变施农药防治害虫的传统方法,2001～2004年,在兴义雪梨园设点,调查园中邻耕区、更替区、辟荒区内年度虫种结构、主要害虫、害虫天敌世代生活史。结果表明,2001～2004年,兴义雪梨园产量逐年增加,无大小年现象;梨个体较整齐,外观品质好,内在品质好,无农药污染;梨园内害虫未暴发,梨园内生物种类和数量增多,兴义雪梨园生态系统基本平衡。

In order to adjust the ecosystem balance in Xingyi snow pear garden,we controlled pests by comprehensively using climate,natural enemies of pests and technical measures in place of traditional way of spraying pesticide.During the period of 2001～2004,we investigated the insect species structure,main pests and life cycle of natural enemies of these pests living in no-till area,replacement area and waste area.The results showed that： pears production in Xingyi garden has been increasing each year;the pears are excellent outlooking and inside quality;the garden is non-pesticide polluted and the species（birds,snakes,rats and wildlife mushrooms） are increasing.The ecosystem in Xingyi snow pear garden is balanced basically