Modern irrigation methods, such as sprinkler, drip, micro-sprinkler have d ifficulties in use, both technically and/or economically while surface irrigatio n methods will reminder the main ways of water application in field for years to come.
Modern irrigation methods, such as sprinkler, drip, micro-sprinkler have d ifficulties in use, both technically and/or economically while surface irrigatio n methods will reminder the main ways of water application in field for years to come.
现代灌溉技术如喷灌、滴灌、微灌等无论是在技术上还是在经济上都很难在这里得到应用，地面灌溉方式在近期内仍将是主要的灌溉方式。