〔编者按）许多农民朋友向本刊询问蔬菜无土栽培的技术，江苏省建湖县庆丰镇永安界50号王军读者来信说：“我打算发展蔬菜、花卉无土栽培项目，以改变目前这种依靠大自然和土地的耕种方式，使蔬菜、花卉生产能够做到既清洁又稳定。”正如王军朋友所说，无土栽培的主要优点是能 [Editor’s note] Many peasant friends asked the magazine about soilless culture techniques of vegetables. Wang Jun, reader from No. 50 Yong’an community, Qingfeng town, Jianhu County, jiangsu province, wrote: “I intend to develop soilless cultivation of vegetables and flowers to change At present, the cultivation mode of relying on nature and land enables the production of vegetables and flowers to be both clean and stable. ”As Wang Jun friend said, the main advantage of soilless culture is that energy