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作 者 ：杨逢建;刘维;李德文;祖元刚*

期 刊 ：植物研究 2012年 32卷 (3)期 页码：339-342

关键词：重度盐碱地；杨树；土壤特性；改良效果；

Keywords:Severe saline-alkali soil, poplar, soil characteristics, amelioration performance,

摘 要 ：为探讨重度盐碱地营造杨树人工林对土壤的改良效果，本实验以黑龙江省肇东市重度盐碱地作为研究对象，采用小穴改良“一字沟”觅食丘式原位修复、小穴改良“十字沟”觅食台式原位修复和小穴改良“井字沟”觅食坛式原位修复的方法对重度盐碱地进行改良。研究结果表明：实施不同改良措施后土壤特性发生了显著变化，土壤pH值、电导率含量显著下降；土壤碳酸根含量显著下降，交换性钙、镁含量显著提高；土壤胡敏酸和壳聚糖含量明显提高，土壤肥力增加。因此，本研究所采用的三种不同的改良措施具有良好的改良效果。

Abstract:In order to investigate the effect of constructing poplar plantation on soil amelioration, the severe saline-alkali soil of Zhaodong City, Heilongjiang Province was studied. The 4 treatments were CK (Control), Bar treatment (Small hole improvement-Bar foraging ditch-In situ repair), Cross treatment (Small hole improvement-Cross foraging ditch-In situ repair) and Grid treatment (Small hole improvement-Grid form of foraging ditch-In situ repair), respectively. The results of the present study showed that the different improvement treatments changed the severe saline-alkali soil characteristics, significantly decreased the pH value, conductivity and carbonate content in soil surface (p<0.05). Meanwhile, the exchange of calcium and magnesium ion contents, and the humic acid and chitosan contents were significantly increased (p<0.05). Therefore, the 3 different treatments, based on Small hole improvement and In situ repair, had well modified effects for the severe saline-alkali soil.

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