摘要：A greenhouse study was conducted to evaluate the ameliorative effects of Zn (0, 5, 10 and 20 mg Zn kg-1 soil) under saline (800, 1600, 2400 and 3200 mg NaCl kg-1 soil) and normal conditions on pistachio seedlings ( Pistacia vera L. cv. Badami) growth and performance. Zinc improved plant growth under salt-affected soil conditions. Plants biomass was strongly decreased by salinity level of 3200 mg kg-1 and the soil adverse effects were accentuated with increasing level of salinity. Increasing salinity in soil under Zn deficient conditions, generally decreased leaf, shoot and root fresh and dry weight and other growth parameters. However, these adverse effects of salinity diminished with the increase in Zn levels up to 10 mg kg-1. Increasing Zn supply from 5 to 10 mg kg-1 soil improved net assimilation rate, relative growth rate, leaf area ratio and specific leaf area under salinity conditions. Zn also had significant effect on increasing total leaf area, shoot height, stem diameter and number of leaves under salinity stress. The result of the present study emphasized the importance of Zn nutritional status of plants in improving salt stress tolerance. Adequate Zn nutrition is, therefore, important for the maintenance of good pistachio tree growth and yield under saline conditions. Zn fertilization markedly increases pistachio biomass, shoot height, leaf number, stem diameter, net assimilation rate, relative growth rate, leaf area ratio and specific leaf area at all salinity levels. These growth indices are markedly reduced when the amount of Zn in media is below optimum levels under salinity conditions.
