无土栽培,有二种方法,一种是营养膜栽培,俗称水栽法;另一种是基质栽培法,即以蛭石、炉渣、砂等基质进行栽培.用锯末作基质种植农作物是无土栽培的一个进展.一、锯末基质优点:除具备无土栽培所共有的省地、省肥、省水、杂草少、卫生、作物生长快、成熟早、产量高、品质佳、果实着色好等优点外;还具有基质轻,容重比蛭石轻约一倍;来源广,易于推广;成本低, Soilless cultivation, there are two methods, one is nutrition film cultivation, commonly known as hydroponics; the other is the substrate cultivation method, that is, vermiculite, slag, sand and other substrates for cultivation. First, the advantages of sawdust substrate: In addition to soilless culture have the common province, fertile, water, less weeds, health, fast crop growth, early maturity, high yield, good quality, fruit coloring Good and other advantages; also has a light matrix, weight than vermiculite about double; wide source, easy to promote; low cost,