The results show that the main causes of small-old trees are the soil water deficiency, the low water utilization rate and the low fertility in soil.
研究结果表明，形成小老树的主要原因是土壤水分亏缺、水分利用率低和土壤肥力不足。
The results show that the main causes of small-old trees are the soil water deficiency, the low water utilization rate and the low fertility in soil.
研究结果表明，形成小老树的主要原因是土壤水分亏缺、水分利用率低和土壤肥力不足。
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