近年来，由于北方棚（室）袋料香菇栽培经济效益显著，发展较快，但每年都有部分袋料香菇不出菇或出菇少、出菇迟和遭受杂菌污染、烂菇等现象。根据近几年来在实践中总结的有关防治经验，介绍如下，供参考： 一．不出菇的原因及防治方法 （一）品种选择不当不出菇 北方棚（室） In recent years, due to the northern shed (room) bags of mushroom cultivation significant economic benefits, the rapid development, but each year there are some bags of mushrooms do not fruiting or fruiting less late fruiting bacteria were contaminated mushrooms and other phenomena . According to the experience of prevention and treatment summarized in practice in recent years, the following is introduced for reference: The reasons for not mushrooms and methods of prevention and treatment (A) breed improper selection Beans North shed (room)