A hydroponic experiment was conducted to study the effect of yttrium on physiological characteristics of maize seedlings and then analyze yttrium regulation to water use efficiency of maize seedlings.The results demonstrated that the root lengthen and root-shoot ratio and water use efficiency of maize seedlings tended to decrease where yttrium dosage varied from 0~0.05 mg/g in dry soil,and to decline where yttrium dosage varied from 0.05 to 0.5 mg/g in dry soil;Meanwhile,the stomata conductance and leaf wat...
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