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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。
The inland distribution of vast saline soil in northwestern China is an important factor that affects the ecological environment and agricultural sustainable development. Due to the variety of salinization, the degree of salinization is complex, the composition of salt is complex, the salinity of rain and salt is weak, the effect of surface aggregation is significant, the secondary salinization is common and water can not be drained away by water alone, . After more than 20 years of research, the author adopted biological control as the main method to effectively desalinate the land by introducing pioneers of salt land, applying bio-salt drainage, increasing green coverage, preventing aggregation of salinity tables, and fertilizing fertility. At the same time, it insists on the study of plant salt-resistance mechanism and the development and utilization of plant resources in saline so as to make the biological control of inland saline-water on the basis of theory and application. According to the improvement of ecological environment in western China, adjustment of planting structure and sustainable development of agriculture, a model of cultivation of “salt grass industry” and “salt medicine industry” was put forward to make the inland salinization area sustainable Agriculture can release huge ecological, social and economic benefits.