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这一讲主要讲塑料大棚中的无土栽培技术。在塑料大棚中进行蔬菜的无土栽培,比一般土壤栽培明显地早熟增产。这是因为大棚光照均匀、充足,作物生长的空间宽阔,环境调节及管理作业都比较方便,能更充分发挥无土栽培的优越性的缘故,沈阳农学院1980—1982年在大棚内以无土栽培方式生产番茄、青椒、黄瓜、菜豆等,比土壤栽培的增产40—70％。一、塑料大棚及无土栽培装置 1.大棚结构进行无土栽培的大棚,最好是跨度在8—10米左右。每个棚的面积可在0.5—1.0亩左右,拱顶高2.8—3.0米,肩高1.5米左右,薄膜采用“三大块”或“四大块”覆盖,在两块薄膜搭接处扒缝放风。
This talk focuses on the soilless cultivation of plastic greenhouse technology. Soilless cultivation of vegetables in plastic greenhouses, significantly more yield than the average soil cultivation. This is because the greenhouse uniform light, adequate space for crop growth, environmental regulation and management operations are more convenient, can give full play to the advantages of soilless culture sake, Shenyang Agricultural College in 1980-1982 in the greenhouse soilless Cultivation of tomatoes, green peppers, cucumbers, beans, etc., than the soil cultivation yield 40-70%. First, the plastic greenhouse and soilless cultivation equipment 1. Greenhouse structure for soilless cultivation of the greenhouse, the best span is about 8-10 meters. The area of each shed can be about 0.5-1.0 acres, the vault height of 2.8-3.0 meters, 1.5 meters shoulder height, the film using the “three block” or “four block” cover, at the two film lap Sew the wind.