我国地处亚欧大陆东部,东临太子洋,大部分地区是季节分明的季风气候,不同季节的降雨量和温湿度变化很大。地处长江中下游地区的湘、鄂、皖、闽、赣、浙、江、沪等省市。梅雨是其特征气候,梅雨天气对这些地区的商品养护有着密切的关系,商品生霉等异状变质大部分都是在这个时候开始的。因此, China is located in the eastern part of the Eurasian continent and east of the Prince Edward Island. Most of the regions are monsoon climates with distinct seasons. The rainfall and temperature and humidity in different seasons vary greatly. It is located in the middle and lower reaches of the Yangtze River in the provinces and cities of Hunan, Hubei, Chongqing, Fujian, Fujian, Zhejiang, Jiangxi and Shanghai. Meiyu is characterized by its climate, and the Meiyu weather has a close relationship with commodity conservation in these areas. Most of the miscellaneous metamorphism such as commodity molds began at this time. therefore,