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当前位置: 首页 > 文章 > 有机稻田主要天敌类群发生动态调查 西南农业学报 2010,23 (4) 1107-1110
Position: Home > Articles > Dynamics Investigation of Major Natural Enemies in Organic Rice Fields Southwest China Journal of Agricultural Sciences 2010,23 (4) 1107-1110

有机稻田主要天敌类群发生动态调查

作  者：
钟平生;吴耀琪;钟振芳
单  位：
惠州市海纳粮油食品有限公司;惠州学院生命科学系
关键词：
有机稻田;天敌;动态调查
摘  要：
本文调查有机稻区主要天敌类群(蜘蛛类、捕食性天敌昆虫、寄生性天敌昆虫)的消长动态及其控制作用。结果表明,有机稻田以肖蛸、球腹蛛,青翅蚁形隐翅虫、绒茧蜂为优势种群,这些天敌迁入稻田迅速、发生量均高于常规稻田。其中有机稻田蜘蛛、青翅蚁形隐翅虫、绒茧蜂平均分别为272,37.8,8头/百株,分别比常规稻田多86.6,11.7,7.5头/百株。同时,在移栽后40 d内,褐飞虱、稻纵卷叶螟等主要害虫发生量均低于其防治阈值,表明此时不必进行施药防治,以免杀伤天敌。因此有机耕作有利于自然天敌的恢复和保护,更能发挥自然天敌对害虫的控制作用。
译  名：
Dynamics Investigation of Major Natural Enemies in Organic Rice Fields
作  者：
ZHONG Ping-sheng1,WU Yao-qi1,ZHONG Zhen-fang2(1.Department of Life Science,Huizhou University,Guangdong Huizhou 516007,China;2.Huizhou Hai-Na Cereals,Oil and Foodstuffs Co.Ltd,Guangdong Huizhou 516000,China)
关键词：
Organic rice fields;Natural enemies;Dynamic investigation
摘  要：
The seasonal changes of spider,predators and parasitoids,and the control effect in organic farming rice fields were investigated.The results showed that tetragnathids,theridiidae,Paederus fuscipes Curtis,Apanteles ruficrus were the dominant species.These major enemies immigrated early into organic rice fields,and the amount was higher than that in conventional farming rice fields.The number of tetragnathids,theridiidae,Paederus fuscipes Curtis,Apanteles ruficrus were 272,37.8,8.0 individual per 100 plants,among which were higher than 86.6,11.7,7.5 individual per 100 plants in conventional rice fields.Simultaneously,during planted 40 days,the amount of brown plant hopper,rice leafroller were less than their economic threshold,indicating that the major natural enemies could control pests strongly and pesticide need not be sprayed in the organic farming fields.Therefore,the organic farming was beneficial to the recovery and protection of the major natural enemies.

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