温床用土의 理化學的 特性이 幼苗의 素質에 미치는 影響

다국어 초록 (Multilingual Abstract)

This experiment was intended to know the effects of physical and chemical properties
of the excellent composts. Twenty two samples were collected from plastic covered
greenhouse zone in chonnam province.
The results obtained are as follows;
1. One of the most important factors in relation to the texture and other properties
of the composts was the organic matter content. The higher the organic matter content
were the lower the specific gravity and the apparent specific gravity and the higher the
porosity. moisture content. total nitrogen and exchangeable capacity.
2. The composts for raising leaf vegetable seedlings contained higher levels of
organic matter while the ones for fruit vegetable contained rather less. The organic
matter contents in the composts for spring heading chinese cabbage were not variable
ranging from 8.85 to 9.19 percent.
3. Hydrogen-ion concentrations of the composts were in the range of pH 4.9~7.2
but most of them were in pH 7:t1 or nearly neutral in their reaction.
4. Seven samples contained more than 1. 0m.e. of exchangeable potassium, and
fifteen of them contained lower than 1.0m.e. of it.
5. It was not clear how high of P or K levels were suffieient for the excellents in
some of the samples, at least, were so high, that they seemed to contain surplus amounts
of fertilizers.

목차 (Table of Contents)

• 緖言 1
• 材料 및 方法 2
• 結果 및 考察 2
• 1. 灼熱損量과 關連된 諸性質 2
• 2. 假比重 4
• 3. 眞比重 4
• 4. 孔隙率 4
• 5. 容水量 4
• 6. 置換容量 5
• 7. pH 5
• 8. 인산含量 5
• 9. 置換性 K, Ca, Mg. 5
• 10. 各各 床土의 性狀 6
• 菓菜類의 床土 6
• 果菜類의 床土 6
• 摘要 6