中国西北内陆盐渍化防治与可持续农业的研究

中国西北内陆分布着广袤的盐渍土是影响生态环境和农业可持续发展的一个重要因素。由于盐渍成因多样、盐渍程度强烈、盐分组成复杂、雨水淋盐微弱、表聚作用显著、次生盐渍普遍和单纯用水无法把盐排走等特点，因而相对治理难度比沿海地区更大。作者通过20多年的研究，采用生物防治为主的办法，通过引种盐地先锋植物、应用生物排盐、增大绿色覆盖、防止盐分表聚、培肥地力等措施，使土地能有效地脱盐。同时坚持对植物抗盐机理和盐地资源植物开发利用的研究，使内陆盐渍生物防治建立在理论和应用的基础上。并根据改善西部生态环境，调整种植结构，走农业可持续发展道路，提出了培植“盐地草产业”、“盐地药产业”的模式，使内陆盐渍区的可持续农业能释放出巨大的生态效益、社会效益和经济效益。

Soil salinization control and sustainable agriculture in north-west endoland region of China

There are large amount of salinized soil in north-west region.Salinization is a main reason that cause a bad ecological environment and prevent to develop sustainable agriculture.The reasons for salinization is variable.Because salinity soil have characteis such as intensified salinity degree,complicated salt contents,weak rain off salt-washing off,obvious salt surface concentration,second salinity distributed more often and water movement unable to take away the salinity in the soil.So it is more hard to prevent salinization inland than in areas near sea.After 20 years of studies,we have taken a biological approach involving planting special salt tolerant crops,through which take away salt increase green-coverd areas as to prevent salts up to the subsoil,therefore to improve soil production efficiently.Mean while,we insist on study.mechanic of plant salt-resist and measures about how to use of these plants so that a practical and theoretical basement of salinization prevention was founded.Also models of "grass industry in salinized areas" and "medical plants industry in salinized areas" are presented,this be sure to lead to obvious ecological,social and ecological efficiency of sustained agriculture in salinized areas in north-west China.