Studies On The Effect Of Vegetation Reconstruction In Dry Salt Lake Basin Of Typical Steppe Area

In recent years,due to the drastic changes in the global climate and the excessive exploitation of human beings,the lake habitat in arid and semi-arid steppe region has undergone great changes,showing a trend of greatly shrinking or even drying up.The salinization of large dry salt lake basins in Taipusi Banner Gongbao Laga Sumu Gzhiletu Gacha Flower Naoer,not only did not use value,and became the source of the sand,even caused serious influence of herdsmen surrounding life,so to effective governance and repair the dry salt lake basin saline-alkali land to restore dry salt lake basin ecological environment in Inner Mongolia has a great significance.This study selects the alkali MAO,alfalfa,old mans and four kinds of salt-tolerant forage,sophora alopecuroides and improver DS,desulfurization gypsum,organic fertilizer,gypsum + DS,organic fertilizer,five kinds of modifier and high ridge measures are make a balanced combination and comparing the gap of processing,to explore the different improvement measures for dry salt lake basin alkali-saline effect and influence on the forage growth and development,To find out the suitable forage and improvement measures for the saline-alkali land in the dry salt lake basin,and then analyze the ecological and social benefits brought by it.The results are as follows:(1)Different modified measures can affected soil physicochemical properties to a certain extent,only high ridge measures have less impact on soil physicochemical properties,and the addition of improved agents has effectively increased soil water content,significantly reduced soil capacity,salt content,p H and conductivity.(2)The improvement measures can promote the growth and development of pasture.In addition to high ridge measures,it is impossible to develop forage growth,adding improved agents can improve the seedling rate,production,grass production of pastures,and coverage,especially organic fertilizer and organic fertilizer + There is a significant effect in gypsum treatment,and it has a good coverage and yield of alfalfa and alkalities.(3)After two years of observation,only alkalomamma has stabilized grass,and other pastras disappeared.By studying the subsequent effects of soil treatment after alkaline,it is found that other treatment can improve the height,cover and production of alkalo,especially organic fertilizer and organic fertilizer + gypsum to alkalia growth and development and soil The improvement of the physicochemical traits has a significant continuous positive effect.(4)Alkaline thatch can not only improve soil conditions,but also promote the utilization efficiency of water resources,and also provide ecological barrier for the surrounding normal grassland.The construction of the project not only has good ecological benefits,but also provides high-quality forage forage for the development of animal husbandry,and provides a reliable way for herdsmen to get rid of poverty and become rich.As a result,the sustainable development of local agriculture has been maintained,and the ecological protection awareness and ecological restoration technology of surrounding farmers and herdsmen have been driven.The project construction has achieved obvious economic and social benefits.