近年来，随着水稻机械化栽培和技术的提高，对育苗提出了更高的要求。机械化育秧对营养土含水量要求高，必须集中育苗。但集中育苗运输不方便，成本大，各生产队很难达到要求。人工摆盘慢，质量差，早春土壤含水量大，筛土困难。为培育壮秧，节省劳力，降低成本，增加效益，我 In recent years, with the cultivation of rice mechanization and the improvement of technology, raised higher requirements for nursery. Mechanized seedlings on nutrient soil moisture requirements, we must focus on nursery. However, concentrated nursery transport inconvenient, costly, the production team is difficult to meet the requirements. Manual swing slow, poor quality, early spring soil moisture content, difficult sieving. To cultivate strong seedlings, save labor, reduce costs and increase efficiency, I