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近几年来,我省应用白僵菌防治松毛虫发展较快。1976年防治面积达20多万亩,防效大多在80%以上。白僵菌可防治农、林、果和茶叶等多种害虫,便于土法生产,适合国营和社队林场自产自用,颇受群众欢迎。但是白僵菌在三级开放培养生产过程中,极易受杂菌污染,导致成品率不高。为了摸索一种经济有效的生产方法,省农林局于1976年初组织我们几个单位进行了多次试验,初试成了用石灰水作消毒菌剂生产白僵菌的方法。生石灰加水即可生成具有抑菌作用的氢氧化钙,是一种效果较好的抑菌剂。利用这一原理,将生石灰消化后与麸料拌匀,接上10%的二级母剂,并用同一浓度的石灰水拌好稻壳做垫盖料或涂刷旧报纸作覆盖物,以防杂菌和保湿。然后把接上菌种的三级固体料按1-3厘米的厚度,平铺于曲盘或芦席上,进行培养。
In recent years, the application of Beauveria bassiana in our province to control the rapid development of pine caterpillars. Control area of more than 20 acres in 1976, mostly in control over 80%. Beauveria bassiana can prevent pests such as agriculture, forestry, fruit and tea, and is convenient for indigenous production. However, Beauveria bassiana in three open culture production process, vulnerable to bacteria contamination, resulting in low yield. In order to explore a cost-effective production methods, the Provincial Bureau of Agriculture and Forestry in early 1976 organized several of our units to conduct a number of tests, initially became a lime water disinfection agents Beauveria bassiana method. Calcium hydroxide can generate antibacterial effect of calcium hydroxide, is a better bacteriostatic agent. Use this principle, the quick lime digestion and mix well, connect 10% of the two mother and use the same concentration of lime mixed with rice husk cover padding or brushing the old newspaper cover, in case Bacteria and moisturizing. Then the strain of solid material connected to the strain according to the thickness of 1-3 cm, tiled on the curved plate or reed mat for cultivation.