期刊论文

中文

生态学报

1000-0933

2004

24

12

2756-2760

10.3321/j.issn:1000-0933.2004.12.012

国家 8 63资助项目 （ 863 -3 0 6-ZD0 5 -3 -E）； 国家自然科学基金资助项目 （ 3 9670 14 2 ）； 湖南省科技厅资助项目 （ OONKYI0 0 1）；

本校为第一机构

研究鸭子在稻鸭复合生态系统中对蜘蛛及病、虫、草害的影响.试验结果表明:稻田中放入450只鸭/hm2,对农田杂草的控制率为98.8%;稻鸭共栖小区蜘蛛数量显著高于施药小区.高峰期蜘蛛量,稻鸭共栖小区比施药小区高63.6%;第4、第5代稻飞虱虫量稻鸭共栖小区比对照小区分别下降47.6%、72.8%,稻鸭共栖对稻飞虱可以起到稳定、持续的控制作用;可减轻二化螟、纹枯病的发生量和发病程度约50.0%,对二化螟和纹枯病有较好的控制效果;稻鸭共栖对纵卷叶螟控制效果较差,水稻生长后期需结合采用药剂防治;稻鸭共栖可改变农田害虫、天敌的生存环境,减少用药次数,减轻农药对环境的污染,提高水稻产量和经济效益.

The article studied the influence of ducks in a rice-duck complex ecosystem as well as its natural enemies and diseases, insects, weeds and pests. The results indicated: when feeding 450 ducks.hm~(-2) in paddyfield, the controllable rate of weeds on farmland was 98.8%; the quantity of spiders in rice-duck commensalism area was remarkably more than those in areas using pesticide. The quantity of spiders at fastigium in rice-duck commensalism area was 63.6% higher than in those area also using pesticide. The fourth and the fifth generation of ric...