Analysis And Research On Drip Irrigation System Of Corn Membrane In Semi-Arid Areas In Jilin Province

Jilin province is Chinese important grain production base,there is a large area of farmland,particularly in the western region is one of the producing ofJilin province food.But the problem of water shortage and uneven distribution of time and space in the region is growing,the long drought less rain has severely restricts the sustainable production of the food.After using membrane under drip irrigation,although canal irrigation,drip irrigation,furrow irrigation for tube filling,save a lot of water,but still lack of according to local specific climatic conditions of adjust measures to local conditions to carry out the application of membrane with drip irrigation maize water consumption of water requirement in the situation,did not form suitable for the local high efficiency water saving model of fertilizer and irrigation system.To solve these problems will no doubt give in west jilin further increase in grain production,effectively ease the water crisis and a major breakthrough in ecological environment protection,thus carry out the study is very necessary and urgent.Based on the above reasons,this paper,based on the natural climate of jilin province in the western region specific geographic conditions,selection of XiangYang Village in tongyu county,jilin province maize film with drip irrigation of field experiment,set up buy irrigation quota of 1200 m~3/hm~2(CK1),T1:1080 m~3/hm~2?(scheme),T2:960 m~3/hm~2?(scheme),T3:840 m~3/hm~2?(scheme)and T4:720 m~3/hm~2?(scheme)5,contrast different irrigation schemes on the dynamics of the soil moisture,the growth of corn and corn yield,the influence of the variance analysis and found that all of the production plan is close,but the T3 during maize growth and development has the minimum water consumption,and irrigation water quota is relatively small,high water use efficiency,therefore,the economic benefits of T3 optimal,and the water.In the T3 solution,on the basis of the irrigation time and further optimized,obtained the suitable for local environment at the same time,reasonable and efficient membrane under drip irrigation system of corn.