吉林省中西部平原地区过去在治理冲沟上,因缺少块石,只能修土谷坊。但经过多年实践证明,土谷坊不够坚固,常被洪水冲毁。若修石谷坊,块石须由外地采运,造价过高,运输困难,很不经济。因此,为解决这一矛盾,前郭、伊通、扶余县和长春市郊 In the past, the plains in the central and western parts of Jilin Province were in the process of managing gullys. Because of the lack of rock and stone, they could only repair the earth. However, after many years of practice, it has been proved that Trail Square is not strong enough and is often destroyed by floods. If you repair stone Valley Square, blocks of stone mining by the field, the cost is too high, transportation difficulties, it is not economical. Therefore, in order to solve this contradiction, Qian Guo, Yitong, Fuyu County and the suburbs of Changchun