亚洲一区欧美在线,日韩欧美视频免费观看,色戒的三场床戏分别是在几段,欧美日韩国产在线人成

It is one of the important ways of solving water shortage to develop the drip irrigation technology. However, a series of problems brought by the rapid development need rethink profoundly. Based on the description of the drip irrigation technology application status and policy support to develop the drip irrigation, the environmental problems brought by the great success of drip irrigation technology used in Xinjiang Province were described in detail. A low-carbon environment friendly drip irrigation technology system is necessary, whose basic connotation is to realize the goal of “three lows and two highs”, including “l(fā)ow-energy”, “l(fā)ow-pollution”, “l(fā)ow-emission”, “high-effect” and “high-benefit”. At the same time, the key technologies were stated in detail. The technology of “consumption reduction” contains self-pressure drip irrigation technology and construction technology for low-pressure or micro-pressure drip irrigation system. The technology of “pollution abatement” contains security drip irrigation with poor quality water and drip irrigation with biodegradable mask or under mulch. The technology of “emission reduction” contains emission reduction of farmland greenhouse gas in drip irrigation and drip irrigation with clean energy to get water. The technology of “effect-raising” contains treatment technology of water quality, sedimentation and filtration technology, and product development of long-lasting anti-clogging drip irrigation emitters. The technology of “high-gain” contains irrigation with integration of water and fertilizer and so on. Eventually, the future research priorities and the key issues need to be resolved about low-carbon environment friendly drip irrigation technology were proposed.