近年来,无土栽培这一农业高新技术在我国获得了一定的进展,但无论是北方的基质栽培,还是东南沿海的NFT栽培和华南的深水栽培,都采用的是营养液。这一技术受许多条件制约。首先,营养液的配制和管理需要受过专门训练的技术人员来操作,难以被一般生产者掌握。第二,在我国,一些配制营养液的专用化 In recent years, soilless cultivation of this high-tech agricultural technology in our country has made some progress, but whether it is the northern cultivation of the substrate, or the NFT southeast coastal cultivation and deep-water cultivation in southern China, are used in nutrient solution. This technique is subject to many conditions. First of all, the preparation and management of nutrient solution requires specially trained technicians to operate it, which is hard to be mastered by the average producer. Second, in our country, some specialization of the preparation of nutrient solution