静止法无土栽培是相对传统无土栽培而言的。在无土栽培中 ,营养液的各种营养元素间要有一定的平衡关系 ,但随着时间的推移 ,各元素间的平衡关系会被破坏 ,所以 ,必须对残液进行处理。处理的方法一般有两种 :一种被称为“开放式” ,也就是残液由栽培床自然排出 ,漏掉废弃。这既 Still law Soilless culture is relative to traditional soilless culture. In soilless culture, nutrients have a certain balance between various nutrients, but with the passage of time, the balance between the elements will be destroyed, so the residue must be processed. There are generally two methods of treatment: one is called “open”, that is, the raffinate is naturally discharged from the cultivation bed and is discarded. This is both