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土法生产“7216”杀虫菌固体成品的含孢量,一般为100亿/克左右,少数能达到200亿/克以上,甚至300亿/克,说明在现有条件下,进一步提高固体产品含菌量的潜力很大。根据我们的实践,要稳定和提高“7216”杀虫菌产品质量,应注意以下几个因素。一、原料细度棉饼、玉米等原料要粉碎过筛。粉碎愈细,表面积愈大,利用愈充分。二、水分水分是影响发酵菌数高低的重要因素。水分过多,营养条件虽好,但通气条件差,消毒后结团过多,拌种不匀,有利噬菌体危害;水分过少,通气条件虽好,但营养条件差,生长周期短,发酵菌
Native production of “7216” insecticides solid content of spores, usually 10 billion / g or so, a few can reach more than 20 billion / g, or even 30 billion / g, indicating that under the existing conditions, and further improve the solid product The potential for bacteria is high. According to our practice, to stabilize and improve the quality of “7216” insecticidal products, we should pay attention to the following factors. First, the fineness of raw materials cotton cake, corn and other raw materials to be crushed and sieved. Shatter finer, the larger the surface area, the more fully utilized. Second, water moisture is an important factor affecting the level of fermentation bacteria. Excessive water, good nutrition, but the poor ventilation, excessive clumping after disinfection, uneven dressing, beneficial phage hazards; water is too small, the aeration conditions are good, but the poor nutritional conditions, the growth cycle is short, the fermentation bacteria