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Physicochemicul characteristics of soilless substrates for soilless culture:

Zhang Dewei, Mu Yonghua, Xu Zhihao, Que Ruifen & Zhang Shizu (Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China)  
The physicochemical characteristics of soilless substrates, i.e. carbonized rice hull, sawdust, shiitake-grown sawdust, cotton seed coat, and straw mushroom-grown cotton seed coat (SMCSC) were studied in the following aspects: volume weight, water-absorbing quality, water-retaining capacity, pH value, C/N ratio, and ion exchange quality. The physicochemical characteristics of substrates such as sawdust and cotton seed coat were greatly improved after growing edible fungi. The problems arid the overcoming methods in the use of these substrates for soilless culture were also discussed.
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