西瓜地盖土压砂整畦技术西瓜在河滩地栽培应进行盖土压砂整畦．河滩地砂土下层土质坚实，深挖瓜沟，盖土压砂能改良土壤结构，提高西瓜产量，并为种植瓜后作物奠定丰产基础．笔者在陕西省兴平县汤坊渭河砂滩地的试验结果表明，西瓜地整畦进行深挖瓜沟，盖土压砂，单产可达... Watermelon to cover the earth pressure sand finishing technology watermelon cultivation in the floodplain should be covered soil sand pressure. Under the sandy land of the floodplain, the soil of the lower layer is solid and digs deep into the gully. The sand covered with sand can improve the soil structure, increase the yield of watermelon and lay a solid foundation for the cultivation of melons. The author in Xingping County, Shaanxi Province, Wei River sand beach trial results show that the watermelon to dig deep Guagu ditches, covered sand sand, yield up to ...