金合欢-檀香树联种在防治次生盐碱化、改良土壤性质中的优势分析

在土地的利用中,人们对土壤盐渍化的治理有着悠久的历史,因为土壤盐渍化治理困难、没有特效措施、治理工程量大,因此土壤盐渍化也被称为土地的“癌症”。近年来由于气候的改变、不合理耕作,次生盐碱化问题也在日益加重,大多数治理手段治标不治本,不能从根本上解决问题。经研究金合欢-檀香树联种模式能有效防治次生盐碱化、改良土壤的同时为农民带来较理想的经济效益。该模式利用金合欢的发达根系从深层土壤汲取水分,通过蒸腾作用有效控制地下水位,达到防治土壤返盐的作用;檀香树作为半寄生树种,扎根浅,必须要依附于金合欢树根系,二者的配合能够带来巨大的生态环境效益与经济效益。

Advantage Analysis of Combined Acacia-sandalwood Planting for Prevention of Secondary Salinization and Improvement of Soil Properties

It is long history for people to control soil salinization in use of land. Because soil salinization is difficult to control, there are no specially effective measures and control is costly,so soil salinization is also called the "cancer" of the land. In recent years, due to climate changes and unreasonable farming, the problem of secondary salinization has become more serious. Most of the treatment methods only focused on the symptoms but not on root cause, which cannot be solved the produce completely. The Acacia -Sandalwood model can effectively prevent and control the secondary salinization and improve the soil. The model used the developed root system of Acacia -Sandalwood to extract water from deep soil and effectively control the groundwater level through transpiration. Sandalwood, as a semi-parasitic tree with shallow roots, must be attached to the root system of Acacia. The combination can produce obviously ecological and economic benefits.