渠道防渗常采用粘土防渗、混凝土板防渗，浆砌石、干砌石或混凝土板下铺土工膜防渗等防渗型式，因其造价较高，多在有国家投资的条件下采用，靠管理单位和受益村屯自筹采用较少。笔者在宁安市江南灌区红旗渠防渗中采用大地膜防渗、既解决了渠道渗漏、也缓解了资金紧张的矛盾。 Seepage control often use clay seepage, impermeable concrete slabs, masonry, dry masonry or concrete slab seepage impermeable geomembrane impermeable type, because of its high cost, and more under the conditions of national investment , By the management unit and benefited from the use of village self-employed less. The author of the Hongqi canal seepage control in the Jiangnan Irrigation District of Ning’an City, the use of large-scale membrane seepage, both to solve the channel leakage, but also ease the tension between the financial constraints.