Study On Effect And Development Countermeasure Of Improvement Of Saline-alkali Soil By Water Conservancy Measures In Songyuan

With the social progress and development,the ecological and environmental problems due to the unreasonable development and utilization of people has become increasingly prominent,and gradually become a worldwide problem,many problems,the most serious salinization.China is a big agricultural country,land is the lifeblood of national development,China is also one of the most serious countries affected by salt and alkali disasters,due to the deterioration of land salinization will curb economic development,so the management of saline land is necessary.This paper introduces the research background and significance of the research,expounds the current situation of the development of saline soil management at home and abroad,and analyzes the local ecological environment,agricultural status,natural geography profile and existing environmental problems in Songyuan area as the research object Summarizes and analyzes the causes of local soil salinization through the available data.This paper introduces several kinds of water conservancy measures in Songyuan area,and makes a comparative analysis,and finds out how to improve the salinity and salty salt in Songyuan area.The field experiment was carried out by using brackish water irrigation to improve the saline-alkali method.The test area is divided into three different test areas:(1)control area: only brackish water rinse;(2)application of phosphogypsum 1.5 kg / m2,plus organic fertilizer 0.002 m3 / m2,brackish water rinse;(3)phosphogypsum 3.0kg / m2,Plus organic fertilizer 0.003 m3 / m2,brackish water rinse.The parameters of irrigation quota,alkali quantity and growth period were calculated,and the salt washing standard was determined.The water requirement was determined by the requirement of soil salinity at different growth stages.The results of row irrigation,irrigation,soil salinity and pH,and rice yield were analyzed.The results show that: the application of phosphogypsum 3.0kg / m2,plus organic fertilizer 0.003 m 3 / m2,brackish water rinse,the effect is good.Based on the analysis of the present situation of saline soil in Matsubara area and the improvement of saline-alkali soil test by brackish water irrigation,this paper puts forward the measures to improve the development of saline-alkali soil in Matsubara area based on eco-environmental protection,socio-economic development and local economic situation And the proposed: the establishment of a reasonable drainage system,effectively stabilize the groundwater level;the implementation of irrigation and drainage,water and drought separately;the use of advanced irrigation technology;the use of advanced agricultural technology;increase well irrigation,control of groundwater level;biological drainage,reduce groundwater level;Water brackish water resources;real-time monitoring of local soil conditions and groundwater.Through the coordinated application of various water conservancy measures,the effect of comprehensive control of saline soil is more obvious,which can make the agricultural economy of Songyuan area get better and faster.