摘要
以陷阱法研究了浙西南山区单季稻区４种不同非稻田生境与稻田间捕食性天敌的迁移规律。初步探明各生境中捕食性天敌种库资源丰富，由蜘蛛、蛙、鞘翅目捕食性昆虫和革翅目捕食性昆虫组成，蜘蛛占捕食性天敌总数的３８５％－７５、０％，种类有９科 １３种，优势种是拟水狼蛛；水稻移栽后的一个月内，捕食性天敌在稻田与非稻田生境间迁移活跃，从非稻田生境迁入稻田中的捕食性天敌是迁出数量的１．１－２．７倍；并在稻田内进行了减少施药次数试验，证明在水稻生长前期利用天敌控制稻飞虱为害，从而减少用药次数是可行的。
The dispersal patterns of some important predators, such as spiders, frog and beetles were monitored by setting up two-directions pitfall trap between rice fields and neighboring habitats in the single season rice area of southem-west Zhejiang. The results showed that an abundant predators were found in tea orchard,soybean on field bund, grasses and bushes on the slope and stone cracks in field bunds. Spider was the dominant predator, which consisted of 9 families and 13 species, and accounted for 38.5% -75.0% of all predator species. Within one month after rice newly transplanting, significantly more predators moved into rice fields neigh- boring habitats. The field test showed that it is possible to control the rice pests by enhancing natural enemies in rice fields with the manipulation of neighboring vegetation, and eventually to minimize the insecticide spraying in the early rice stage.
出处
《浙江农业学报》
CSCD
1999年第6期344-348,共5页
Acta Agriculturae Zhejiangensis
基金
浙江省科技攻关项目!961102175
