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无土栽培也称作营养液栽培。它是基于滴灌技术和塑料材料发展起来的一项先进的栽培技术。营养液栽培的最大优点是保证稳产、高产,其关健技术是植床,常见的有泥炭(草炭)床和营养液膜床。前者是采用泥炭或掺混锯末、聚苯乙稀发泡珠粒的混合物、珍珠岩、钢渣球、火山灰等作为“土壤”。一般利用废旧塑料包装袋,装满上述物质后平放在大栅和温室内,上面开两个方孔用以栽种作物和滴加营养液。营养液膜床主要由PE薄膜和毛细性材料(如无纺布)组成。一般有两种方式,即平台式和简式。平台式是在平台上辅PE膜,然后覆上一层无纺布或毛毡类织物。将毛细管式滴头等置于无纺
Soilless culture is also known as nutrient liquid cultivation. It is an advanced cultivation technique based on drip irrigation technology and plastic materials. The biggest advantage of nutrient solution is to ensure stable yield, high yield, the key technology is to implant bed, common peat (peat) bed and nutrient solution membrane bed. The former is the use of peat or mixed sawdust, polystyrene foam beads mixture, perlite, steel ball, volcanic ash, etc. as “soil.” The general use of waste plastic bags, filled with the above material flat on the grid and greenhouse, open two square holes for planting crops and dropping nutrition solution. Nutrient liquid membrane bed mainly by the PE film and capillary materials (such as non-woven) composition. There are two general ways, that is, flat-panel and simple. Platform type is a secondary PE film on the platform, and then covered with a layer of non-woven or felt-like fabric. Place the capillary dripper or the like on a nonwoven