Studies on development of teaching materials on soultion culture

采用简易水培系统对几种园艺植物进行了试验栽培，以供初中栽培学习等。栽培采用聚乙烯桶和箱。一些蔬菜和鲜花被固定在胶合板上，胶合板上有洞，岩棉在装满Hyponex溶液的桶和盒子上进行培育。Hypones溶液由气泵供气。叶菜在水培上的生长量明显高于土壤栽培。16种园艺植物在提供了Hyponex溶液的岩棉培养基上易于栽培。叶片蔬菜成分分析表明，水培蔬菜氮、碳、钾含量高于土培蔬菜。

Experimental cultivations of several horticultural plants by simple system of water culture for cultivation learning in junior high school etc. were investigated.Polyethylene buckets and boxes were used for the cultivations. Several vegetables and flowers were fixed to plywoods having holes by rockwool on the buckets and boxes filled with Hyponex solution and cultivated. The Hypones solution were supplied air from air-pumps. Leaf vegetables appered to be higher growth on the water culture than soil culture.Sixteen horticultural plants could easily cultivate on rockwool culture supplied with Hyponex solution.Analysis of components of leaf vegetables showed higher rates of nitrogen, carbon and potassium contents in the vegetables from the water culture than in the ones from soil culture.