The ecological water requirement of Robinia perseudoacacia can be expressed by the evapotranspiration of trees in growing season.It can be influenced by weather,vegetation,and soil moisture.If soil moisture is above temporary-wilt or growth-retard,tree growth can be sustained,basically or normally.Therefore,soil water contents for temporary-wilt and growth-retard can be taken as the minimum ecological water requirement and the suitable ecological water requirement of Robinia perseudoacacia,respectively.They...
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