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一、育苗大棚的设置 大棚面积一亩,以东西延长南北向为宜。塑料薄膜应覆盖四大扇以便放风。在北纬40地区可于二月中下旬扣棚烤地,棚内作成硬埂低哇一百个,畦埂与压线垂直,以防水滴到畦内影响秧苗生育。每畦施优质农家肥二百斤,过磷酸钙半斤到一斤,耕翻三、四寸深,耙平鞋面准备?
First, the establishment of nursery greenhouses area of an acre of greenhouses, something to extend north-south is appropriate. The plastic film should cover four large fans for airing. In the northern latitude 40 areas can be shack in mid to late February baking ground, made within the shed hard wow low wow hundred, vertical and vertical pressure line, to prevent water droplets to affect the seedling growth. Each 畦 Shi high-quality farm manure two hundred pounds, half a catty to a pound of calcium phosphate, plowing three or four inches deep, rake flat upper preparation?