几种化学农药对稻田优势种蜘蛛杀伤力的研究  

KILLING CAPABILITY OF SOME PESTICIDES ON DOMINANT SPECIES SPIDERS IN RICE EIELDS

作　　者：胡自强[1] 王洪全[1] 吕志跃[1] 

机构地区：[1]湖南师范大学生命科学学院,长沙410081

出　　处：《蛛形学报》2000年第2期112-115,共4页Acta Arachnologica Sinica

基　　金：国家自然科学基金重点项目(39830040)

摘　　要：用5种化学农药对稻田优势种蜘蛛杀伤力的盆栽与田间进行测试。结果表明,5种化学农药对稻田4种优势种蜘蛛都有较大的杀伤力,总的杀伤率达62.1％～91.7％,盆栽施药比田间施药对蜘蛛的杀伤力大,田间试验结果应当比较符合实际;田间试验对照组蛛虫减退的情况进一步说明,蜘蛛对目标害虫具有良好的控制作用,在晚稻后期,如果蛛虫比在1:5以下,用不着使用化学农药防治。This paper reports the testing results of mortality of five chemical pesticides on dominant species spielers in the rice fields. The results show that there is a relative high mortality of five chemical pesticides on four dominant spiders, and the total killing rate reaches 62. 1 - 91. 7%. The mortality on spiders of applying pesticides on potting rice is higher than that of on field rice. The result of the test on field rice is supposed to be accorded with the practice. The decrease of spiders and insects in the con-troled groups in the test on field rice can explain more clearly that spiders play a effectively controling role on their target insects. It's unnecessary to apply chemical pesticides to control insects when the rale of spiders to insects is less than one to five is the later stage of late rice.

关 键 词：化学农药 稻田蜘蛛 杀伤力 杀虫剂 

分 类 号：S476[农业科学—农业昆虫与害虫防治]