在我国粮食主产区江汉平原上,纵横交错的乡村河渠是非常重要的农业基础设施,农田灌溉、抗旱排涝全靠它。可是因为种种原因,许多河渠年久失修、沉沙淤积。而要彻底疏浚河渠,资金、人工都是大问题,这 On the Jianghan Plain, the main grain-producing area in China, the rural drainage channels crisscrossing each other are very important agricultural infrastructure. Irrigation, drought and drainage depend on it. However, due to various reasons, many river channels are in disrepair and sediment deposition. To completely dredge the canal, capital and labor are major problems, this