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据在粤北调查 ,发现意杨 [加杨PopulusxcanadensisMoenchcv (I-2 1 4) ]是一种桑天牛的诱饵树。在桑田埂栽种 ,其诱成虫产卵能力是桑树的 1 0～ 1 0 0倍以上。在广州市郊罗岗和顺德市开展了以应用嗜菌异小杆线虫Heterorhabditisbacteriophora 84 0 6为主 ,种植诱饵树意杨为辅的综合防治桑天牛的试验。结果表明 ,用线虫防治集中在意杨上的桑天牛幼虫省工、省药、成本低 ,线虫的防效达到89%～ 1 0 0 %,1 3 0 0多hm2 大田试验及示范表明 ,用嗜菌异小杆线虫完全可以代替传统的农药防治桑天牛 ,为此虫的综合防治开辟了新的途径
According to a survey in northern Guangdong, it was found that Populus canadensis [Populus xcanadensis Maoencv (I-2 1 4)] is a bait tree of Morus alba. In the mulberry 埂 planting, the induced spawning ability of mulberry is 10 ~ 100 times more. In the suburbs of Luogang and Shunde, Guangzhou, a trial was conducted on the comprehensive control of Morus alba on the basis of Heterorhabditis bacteriophora 84 0 6, supplemented by planting bait tree Poplar. The results showed that the nematode control and prevention of nematode moth larvae on the Italian poplar were less labor-saving and cost-effective. The control effect of nematodes reached 89% ~ 100%. The experiment and demonstration of more than 1,300 hm2 field trials showed that the use of nematode Bacteriochi fungus can completely replace the traditional pesticide control mulberry, for which comprehensive prevention and control opened up a new way