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研究不同砧木红星、金冠苹果树枝条、叶片、果实水势日变化 ,结果表明 :各器官水势日变化趋势一致 ,均呈“V”型曲线变化。温度、大气湿度、辐射照度对苹果树水势日变化有显著影响 ,土壤含水量对苹果树枝条水势日变化没有影响。
The diurnal variation of water potential in branches, leaves and fruits of red apple and golden crown apple trees were studied. The results showed that the diurnal changes of water potential were the same, showing “V” curves. Temperature, atmospheric humidity and radiation irradiance had significant effects on diurnal variation of water potential in apple trees. Soil water content did not affect diurnal changes of water potential in apple trees.