Research On Causes Of Land Salinization And Analysis Of Treatment Scheme Of Weinan Luyang Lake Basin

Saline-alkali land area is big, wide distribution and variety in China, and alkali-salineland management is always the problem of improving land quality problem.Soil salinizationis not only involved in agriculture, land, water resources,but also involves the typicaleco-environmental problems. Saline-alkali land is an important kind of land resources, andhas great potential todevelop industrialization of agriculture and comprehensiveagriculture.Management and improvement of saline-alkali soil is of great significance, andhas become a worldwide problem, caused the attention of all circles.There is a great quantity of saline-alkali land widely distributed in the north China plain,the northeast plain, arid and semi-arid of northwest, coastal regions and etc.The landsalinization is one of the major problems of agricultural ecological environment degradation.Soil salinization is refers to the soil salt content is too high (above0.3%), and low yield orcannot grow crops. Saline alkali soil in China there are two main reasons: one is theevaporation capacity far greater than precipitation, resulting in saline groundwater rise, themoisture is evaporated, salt in the soil surface, long time salt deposition, and saline soils; Thesecond is the coastal soil, due to close to the water, the soil erosion by water, the soilsalinization.Weinan luyang lake basin of arid climate,the land dips, block, the wetland in the middlepart, the whole area irrigation system is developed. But drainage engineering paralysis, poordrainage, leading to higher ground water level, making the local soil salinization degreedeepening, regional agriculture ecological environment, soil environment and water resourcescondition has the trend of worsening. Salinization problems become the main cause of theagricultural ecological environment degradation and restrict the development of localagricultural economy. In this paper luyang lake saline-alkali land as the research object,studies the luyang lake basin to the cause of the land salinization and developmental law ofsaline-alkali land, put forward the corresponding management plan, on the improvement ofthe regional environment and economic development is of great significance. This paper analyzes the geological features, geological structure, hydrogeology, climatecharacteristics, social economy, environmental conditionsin the study area, this paperinvestigation, monitoring and evaluation of chemical characteristics of soil and groundwaterenvironment, reveals the halide Yang lake basin to the formation of saline-alkali conditionsand influence factors; To discuss the reason of the saline-alkali land halide Yang lake:analysis shows that the formation of soil salinity and landform, groundwater, water qualityand its lower level closely related to the chemical characteristics of rock and soil layer;Salinization of soil distribution and soil salinity changes mainly by the embedded depth ofgroundwater table, groundwater salinity and irrigation evaporation and infiltration; Soilsalinity comprehensive control scheme is proposed in this paper, the collection of waterconservancy engineering, storage of the flood control and waterlogging lakes and wetlands,agricultural management, biological measures, provides the theory and data support forgovernment governance saline-alkali land, the luyang lake region agricultural economicdevelopment and improve the ecological environment is of great significance.