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日本农林省林业试验场的微生物研究组人工培养了一种能杀死食林木的金龟子类幼虫的线虫.这种线虫长约2—3mm,置于在溶有天然成分的固体培养基上培养,保持在25℃下,7—10大内能千倍地增殖.这种线虫不会产生一般农药的污染,但它只在金龟子类幼虫体内增殖.因此它的实用性尚有障碍.它的安全性待验证之后,有希望作为生物农药.这种线虫是由研究组主任串田保研究员在静冈县滨北市的土壤中发现的.当这种线虫长为0.6mm时,已进入金龟于类幼虫体内.线虫及其持有的一种共生菌可将金龟子的幼虫杀死.这种线虫对食用茶树根和树苗根的害虫特别有效,对土壤中蚯蚓类益虫无危害,对其它生态的影响也不大.
The Microbiological Research Unit of Japan’s Agriculture, Forestry and Forestry Experimental Station artificially cultivated a species of nematode that kills wood-eating beetle larvae, about 2-3 mm in length, cultured on a solid medium containing natural ingredients, Maintained at 25 ° C, 7-10 large internal energy thousand times the proliferation of this nematode does not produce the general pollution of pesticides, but it only in the beetle larvae body proliferation, so its practicality still obstacles .Its safety Hope to be verified as a bio-pesticide, the nematode was found in the soil of the city of Binbei, Shizuoka Prefecture, by the research team led by researcher Dr.Shin Tian Bao When the length of this worm is 0.6mm, In vivo, nematodes and their associated commensal bacteria kill beetles’ larvae, which are particularly effective against pests that consume roots and saplings of tea trees, are not harmful to earthworms and beneficial insects in the soil, and have other ecological effects Not big.