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沐川县地处四川盆地西南边缘,属亚热带季风气候湿润区,其主要特点是温暖湿润,雨量充沛,四季分明,垂直气候明显,夏无酷热,冬无严寒,无霜期长,常冬干春旱,夏秋季多阴雨。地带性土壤为黄壤,分为紫色土、山地黄壤、黄棕壤三大类,其分布范围为紫色土——海拔800m以下低山丘陵地区；山地黄壤——海拔800—1200m地带；黄棕壤——海拔1200m以上中山地区。这些环境条件对林业发展较为有利,适于不同种类、不同品种林竹生长,特别适合慈竹生长。
Muchuan County is located in the southwestern margin of the Sichuan Basin, is a humid subtropical monsoon climate zone, its main features are warm and humid, abundant rainfall, clear seasons, vertical climate is clear, no heat in summer, no cold in winter, frost-free period, More rainy summer and autumn. Zonal soil is yellow soil, divided into purple soil, mountainous yellow soil, yellow brown soil three categories, the distribution of purple soil - hilly area below 800m above sea level; mountain yellow soil - elevation 800-1200m area; yellow brown soil - Above 1200m above sea level in Zhongshan. These environmental conditions are more favorable for the development of forestry, suitable for different species, different varieties of forest and bamboo growth, especially for the growth of auspicious bamboo.