Compared input and output of s in cultivated soil of Guizhou province, there was problems of potential sulfur deficiency in upland soil.
贵州农业土壤硫素输入和输出比较，旱地土壤潜在缺硫。
Relevant theories include the theory of regional combination and regional coordination, the theory of bearing capacity input-output potential mode and balance sheet mode.
相关理论包括区域联合与区际协调论、承载力理论、投入产出潜力理论和资产负债表理论。
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