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1、如何保证培养基质量? 培养基是香菇菌丝生长和子实体发育的营养成份,要保证培养基的质量必须做到3点:(1)配方比例科学。常用的比例应以木屑或其它代料(如棉籽壳、玉米芯、甘蔗渣等)占78％左右,麦麸或米糠占15％至20％、石膏粉1％至2％,食糖l％,尿素0.4％,过磷酸钙O.6％。含水量掌握在60％,PH值5.5—6;(2)配制时间应选晴天上午或下午4时进行,阴天也可以,雨天湿度过大,各种杂菌活动力强会引起污染;(3)从拌料装袋到上锅灭菌,时间不超过6小时,避免袋料发酵酸变。 2、怎样测定酸碱度? 培养基的酸碱度(PH值)测定方法:可到医药公司购买标准试纸。取一试纸插入培养基中,1
1, how to ensure the quality of medium? Medium is mycelium growth and fruit fruiting bodies of nutrients, to ensure that the quality of the medium must be 3:00: (1) the proportion of science formula. The commonly used ratio should be about 78% of the wood flour or other substitutes (such as cottonseed hulls, corn cobs, bagasse, etc.), 15% to 20% of wheat bran or rice bran, 1% to 2% of gypsum powder, 0.4% urea, superphosphate O.6%. The water content is controlled at 60% and the pH value is 5.5-6; (2) the preparation time should be sunny or at 4 o’clock in the afternoon, the overcast days are also possible, the humidity in rainy days is too large, and the activities of various bacteria and bacteria will cause pollution; 3) bagging from the spices to the pot sterilization, time does not exceed 6 hours, to avoid bagging acidification. 2, How to determine the pH? Medium pH (pH value) Determination: You can go to the pharmaceutical company to buy standard test strips. Take a test paper into the medium, 1