【摘要】 在土壤干旱胁迫进程中 ,白桦实生苗叶片的自然含水量呈下降趋势 ;相对含水量总的变化趋势与自然含水量相同 ;束缚水含量及束缚水 /自由水比值显著升高 ,复水后 ,三者又重新恢复至正常水平。随着土壤水分逐渐减少 ,可溶性蛋白质的含量呈现减少趋势 ,复水后 ,可溶性蛋白质含量又可恢复至正常水平。白桦实生苗叶片可溶性糖含量增加 ,复水后可溶性糖含量降至趋于对照水平更多还原

【Abstract】 During soil drought stress, nature water content of seedlings leaves of Betula platyphylla decreased, the changes of relative water content of which was same as nature water content. Bound water content and the ratio of bound water content and free water content increased significantly, along with the decrease of soil water, soluble protein content decreased and soluble sugar content increased, after soil water was recovered, all of which returned to normal level.更多还原