盐碱地生态修复与绿化技术的应用实践

Tianjin Luyin Landscape Ecological Construction Co.,Ltd.in terms of saline-alkali land ecological restoration technology,mainly around salt suppression and salt discharge,soil conversion fertile soil and the screening and utilization of resistant plants three aspects of work.At present,there are many technologies such as three-dimensional salt insulation greening technology,multi-dimensional dark pipe rapid salt discharge technology,photovoltaic shaft rapid salt discharge technology,plant rhizosphere microdomain improvement technology,plant combination configuration technology and other technologies.We rely on Inner Mongolia"salt to increase grass(feed)rejuvenation and grazing"farmland demonstration project,the Bali platform of Jinnan District,these technologies are comprehensively used in engineering practices such as the"Between Two Cities"Green Forest Barrier EPC Project in Tianjin Binhai New Area and the Huangbei Drainage River Greening Project in Huanghua City to carry out targeted treatment of saline-alkali land and achieve good results.The company's current research mainly focuses on three directions.The first direction is the application and practice of new synthetic salt barrier materials.In view of the improvement and treatment of saline-alkali land,we cooperate with universities to develop new salt insulation and salt discharge materials,using micro-nano structure non-woven fabrics,which can guide the directional flow of water,can achieve salt barrier,salt isolation,cut off soil capillaries,the effect is obvious.The development and application of new materials can reduce the construction cost of farmland or saline-alkali land projects. The second direction is the research of precision salt washing technology of drip irrigation of saline-alkali soil,which applies drip irrigation salt technology to reduce the water consumption of washing salt in the original soil in the scene of coastal saline-alkali soil;By drip irrigation,the salt in the plant root area can be accurately rinsed and inhibited,which is more intensive than flood irrigation,and can save more than 30%of water costs;The third direction is the research on the formula of new saline-alkali soil structure improver,combined with the maintenance needs,as a soil structure amendment,which can solve the structural problems of coastal saline-alkali soil such as clay weight and poor aeration,and provide a simple and feasible technical solution for soil improvement.