深松对苏打盐碱化旱田改良与利用的影响  

Effect of Deep Tillage on Amelioration and Utilization of Soda-Alkaline Upland Fields

作　　者：刘长江[1] 李取生[2] 李秀军[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所,哈尔滨150040 [2]暨南大学环境工程系,广州510632

出　　处：《土壤》2007年第2期306-309,共4页Soils

基　　金：国家"十五"科技攻关课题"松嫩平原西部盐碱地治理及高效利用模式与技术研究项目(2001BA508B05)"资助。

摘　　要：通过对不同深度深松对经过微咸水淋洗改良的中度和轻度苏打盐碱化旱田的土壤体积质量(容重)、含盐量和pH等理化性状及作物产量等相关性状的影响研究,结果表明:深松措施能够有效地降低经过淋洗改良的中度和轻度苏打盐碱化旱田的土壤体积质量、含盐量和pH,明显改善其土壤理化形状,有效地促进作物根系发育,显著提高作物产量。深松措施可作为苏打盐碱土改良与持续利用的有效耕作方式加以实施;深松方法以效果极为显著且具有可操作性的原垄垄沟深松40cm,中耕时垄沟深松30cm为佳。In soda-alkaline upland fields that had been washed and leached with brackish water and were different in alkalinity, moderate and slight, an experiment was carded out on effect of deep tillage on physic-chemical properties of the soil, including bulk density, soil salinity, pH etc., crop yield and related characters. Results showed that deep tillage reduced soil bulk density, salinity and pH effectively, stimulated root development and increased crop （Sorghum） yield. Deep tillage might be applied as a effective way to ameliorate and utilize soda-alkaline land. Deep tillage to the depth of 40 cm in old furrows and 30 cm in furrows for intertillage is the most effective and workable.

关 键 词：苏打盐碱化旱田 改良与利用 深松 

分 类 号：S156.4[农业科学—土壤学]