香椿与蕨菜单独栽植时,香椿矮化密植的更新换苗频繁,乔化稀植的土地利用率低;蕨菜则需遮阴设施。试验证明香椿与蕨菜间作不仅能充分利用光能、地力和空间,而且还可减轻病、虫、杂草危害,并有利于调节人力、物力进行高效栽培,比单作产量增加40%～50%。栽培技术如下。间作模式选择背风向阳、肥沃、pH值5.5～7的沙壤土,南北向做畦挖穴。香椿株距1米,行 Toon and bracken alone planting, toon Dwarf dense planting replacement seedlings frequently, Qiaohua dilute the land utilization is low; bracken shade facilities are required. Experiments show that toon and bracken intercropping not only make full use of light energy, fertility and space, but also reduce the disease, insects and weeds, and is conducive to the regulation of manpower and material resources for efficient cultivation, than single output increased by 40% to 50 %. Cultivation techniques are as follows. Intercropping leeward sunny, fertile, pH value of 5.5 to 7 of sandy loam, north and south to do Dugu points. Toon plant spacing 1 meter, line