柴达木盆地内陆盐渍土的冲洗技术

Leaching Technique of Inlands Saline-alkali Soil in Chaidamu Basin

在柴达木盆地内陆盐渍土改良的生产实践中，总结出了3个治理步骤：（1）兴建排水设施，降低地下水位至“临界深度”以下；（2）通过冲洗，淋除土壤中过多的盐分；（3）培肥土壤，建立稳产高产灌区．阐述了第二个治理措施─—冲洗淋盐技术，即冲洗定额和水量分配，冲洗方法、冲洗时期与盐渍土类型的关系，以及各类盐渍土的排盐系数、脱盐标准等参数．对干旱、半干旱地区的盐渍土改良有一定的参考应用价值．

We have summarized three improvement steps during leaching practice of inland saline-alkali soilin the Chaidamu Basin: (1 )build drainage equipment and reduce ground water level below critical depth l (2)through 1eaching unnecessary salt from the soi1 is drained; (3)fertilize the soil and establish irrigated area withstable and high yield' This article mainly describes the second improvement method-the relationship be-tween leachquota water allocation,leach method,leach season and the type of salinized soil,and saline drainagecoefficient of all kinds of salinized soil as well as desalinized standards etc. It is useful to improve saline-alkalisoil in arid and semi-arid region.