Experiment Research On Moist-locking Methods And Its Characteristics Of Loess Soil In Arid Land

Northwest less rainfall and drought, water, loess barren, keep the water is very poor.vegetation growth difficulty, weak ecological environment. How to improve the ability of loess keep moisture arid, for the rational utilization of water resources, ensure plant growth has important fundamental significance. Based on the loess mixing, keep the water, and the particularity of the test, is devoted to the exploration can effectively enhance the soil, reasonable economy arid soil improvement of new methods.According to the soil moisture to evaporate and indoor experiment and theoretical research into the characteristics, the use of indoor experiment and theoretical analysis method of combining the loess plateau, analyzed the soil moisture and improved method is studied. The main content of the soil evaporation test, test, plant seeds are planted the dosage of soil cake infiltration and evaporation of mixing layer depth of soil test, etc. Experiments show that:in the practical work, join in loess corncob 3%,effectively improve the ability of water, it will be conducive to improving soil water content.The main contents of the thesis:Chapter 1,expounds the background and significance of the research, the research of waterborne arid loess necessity and research and development at home and abroad, summarizes and analyzes the general goal of study and solve the key problem, this paper summarizes the main research contents.Chapter 2 of Gansu province, Jing Tai county hydrological and meteorological data, the water on the investigation and analysis on Jing Tai county for large-scale soil improvement methods of the basic information and data.Chapter 3, according to the effect of soil moisture to evaporate and infiltration, the main factors of influence on the surface temperature of vegetation and soil water infiltration process experiment of measuring experiment, mix content of soil moisture absorption broken pieces and moisture to evaporate, seed cake growth contrast test. Experiments show that:in the soil organic admixture mix of mixed soil water infiltration and evaporation can generate obvious effect, can effectively improve the soil water, increase the soil moisture, reduce field surface evaporation loss.Chapter 4, through the plant mixed of soil moisture content, the study found that exercise in soil vertical 10～15cm, mixed ratio for mixing depth of 3% corncob can effectively improve the soil structure, increase water unit, to improve soil water infiltration capacity.