食用菌生产中，除不断扩建新菇棚作为栽培场外，每年都要沿用原有的老菇棚。由于老菇棚在以前的生产中或轻或重地发生过某些病虫害，因此，应针对原有问题并结合当时情况采取必要措施。1、基本末发生问题的老菇棚，应先将废料及其覆土材料清除，重新覆膜，按每100米2面积2公斤 Edible mushroom production, in addition to the continuous expansion of the new mushroom shed as a cultivation field, every year to follow the original mushroom shed. As the old mushroom shed in the previous production or occurred mild or severe some pests and diseases, therefore, should be in response to the original problems and take the necessary measures in the circumstances. 1, the basic problems at the end of the mushroom house, the waste and its soil should be cleared of materials, re-coated, according to an area of ​​100 meters 2 kg