营养液是无土栽培的关头，分歧作物要求分歧的营养液配方。今朝世界上揭晓的配方良多，但大同小异，因为最初的配方根源于对泥土浸提液的化学成份阐发。营养液配方中，不同的是此中氮和钾的比例。
Nutrient solution is the key to soilless cultivation. Different crops require different nutrient solution formulas. At present, there are many formulas announced in the world, but they are similar, because the original formula is rooted in the analysis of the chemical composition of soil extract. In the nutrient solution formula, the biggest difference is the ratio of nitrogen and potassium.
配制营养液要考虑到化学试剂的纯度和成本，出产上可使用化肥以降低成本。配制的方式是先配出母液（原源），再进行稀释，可以节流容器便于留存。需将含钙的物质零丁盛在一容器内，利用时将母液稀释后再与含钙物质的稀释液相夹杂，尽可能避免形成沉淀。营养液的ph值要颠末测定，必需调整到适于作物生育的ph值规模，水增时尤其要注重ph值的调整，以避免发生迫害。
The purity and cost of chemical reagents should be considered in the preparation of nutrient solution. Chemical fertilizer can be used in production to reduce the cost. The preparation method is to prepare the mother liquor (original source) first and then dilute it. The container can be throttled for easy retention. It is necessary to put zero Ding of calcium containing substance in a container. When using, dilute the mother liquor and then mix it with the diluent of calcium containing substance to avoid precipitation as much as possible. If the pH value of nutrient solution needs to be measured, it must be adjusted to the scale of pH value suitable for crop growth. When water increases, pay special attention to the adjustment of pH value to avoid persecution