In Sichuan Rolling Country Main Crops Water Demand And Its Change Rule Research

Our country is the water resources deficient country,the average per person water resources are more deficient,according to statistics:Average per person water resources possessive amount insufficient world per person level 1/4, also only accounts for the world average level equally according to the farming 2/3. The short of water resources not only becomes our country some area agricultural economy development the main restriction factor,moreover to our country entire national economy national economy development and the lives of the people level enhancement all could be the enormous restriction. In each water used department, the irrigation water used are most,approximately composes about national water used total quantity 70%. Therefore the promoted agriculture saves water the irrigation contradictory to have the extremely important strategic sense day by day to our country prominent water resources supply and demand.The crops evapotranspiration is the agricultural water used main constituent, also is in the national economy national economy consumes the moisture content the main part, is when the water resources development use essential material. This article the rolling country rains the total quantity richly in view of Sichuan in, but rains the space and time distribution unevenly, the agricultural water resources use not full, the assignment is unreasonable, is easy to give rise to problem and so on...