#trs_autoadd_1231467231968 { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } #trs_autoadd_1231467231968 p { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } #trs_autoadd_1231467231968 td { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } #trs_autoadd_1231467231968 div { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } #trs_autoadd_1231467231968 li { margin-top: 0px; font-size: 12pt; margin-bottom: 0px; line-height: 1.5; font-family: 宋体 } /**---json-- {"":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"p":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"td":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"div":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"},"li":{"line-height":"1.5","font-family":"宋体","font-size":"12pt","margin-top":"0","margin-bottom":"0"}} --**/

末级渠系是指输水干、支渠以下的斗、农、毛渠，是灌区水利工程体系中不可缺少的组成部分，量大面广，它把干支渠的来水直接输送到灌区的塘、库、堰和田块，是整个灌溉系统中的毛细血管和神经末梢；末级渠系的工程状况直接关系到灌区受益情况、灌溉水利用率和灌区效益的高低。

 

1. 基本情况

 

按地形地貌和水源条件，德阳市灌区分为都江堰平坝引水区、都江堰丘陵引蓄水区、本地径流龙门山引水区和龙泉山蓄水区四个灌区。全市有效灌溉面积231.81万亩，灌溉率79.3 %。人民渠干渠总长354.34km，县管干支渠共149条，总长1465.45 km，其中已防渗633.48km，占43.22%，县管以下末级渠道长度为23405km,已