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1984年我局长埠实验林场的全国马尾松种子园发现桃蛀螟(Dichocrocis Puncti-feralis Guénee)为害马尾松针叶,有虫株率达80%。为了摸索高效防治菌剂,我们引进了湖南省长沙微生物研究所生产的工业 UV17号杆菌(Bacilius thuringiensis var.dendrolimus)粉剂(每克含活孢量一百亿),配制成1亿/毫升和2亿/毫升浓度的两种菌液,配时加入0.1%洗衣粉作粘着剂。从长埠实验林场的全国马尾松种子园幼林中采
In 1984, the National Masson Pine Seed Orchard in Changbai Experiment Forest Farm found that Dichocrocis Puncti-feralis Guénee was damaged by Pinus massoniana cones, and the strain rate was 80%. In order to explore efficient antimicrobial agents, we introduced the industrial Bacillus thuringiensis var. Dendrolimus powder produced in Changsha Institute of Microbiology, Changsha (Hunan Province), containing 10 million live spores per gram, formulated at 100 million / ml and 2 Billion / ml concentration of two kinds of bacteria, with time adding 0.1% detergent as an adhesive. From Changbou experimental forest farm in the national masson pine seedlings collected