竹東造林中心區主要土系之理化性質及土壤養分經營

Physical and Chemical Properties and Nutritional Management of Major Soil Series of the Chu Tung Plantation Center, Taiwan

程偉兒(Wei-Er Cheng) ； 洪富文(Fu-Wen Horng) ； 林光清(Kung-Chin Lin) ； 杜清澤(Chih-Zeng Du)

《林業試驗所研究報告季刊》 10卷4期 (1995/12) Pp. 471-483

https://doi.org/10.7075/BTFRI.199512.0471

摘要

本研究旨在探討竹東地區三土系（虎山系，司馬限系與香圓窩系）在育林應用上所受到之限制與管理問題。經由土壤調查，分類及理化性質分析結果，三土系之表土層甚薄(10-12cm)，深度10cm以下，土層之鹽基飽和度偏低(1.4-17.4%)，有效磷含量亦抵(0.6-16mgkg^(-1))，有可能導致養分不平衡。土壤反應在特強酸性反應(pH3.9)主強酸性反應(pH5.5)範圍。虎山系交換性酸度含量(28-40 cmol (+) kg^(-1))高，Al(上標 3+)飽和度(95%)亦高，將使根系生長受限制。司馬限系則因含石量過高(80%)，土壤有效水分供應量低(99mm/m)，在深度25cm以下根生長亦受限制。此結果顯示，除司馬限系宜種植淺根性樹種，虎山系宜施石灰提高pH值減少H(上標 +)與Al(上標 3+)毒害外，三土系均宜施肥，或與固氮樹種混植，以維持土壤品質及林木正常成長。

關鍵字

土壤分類與調查 ； 土壤理化性質 ； 土壤養分

並列摘要

Restrictions on tree growth of the three major soil series in the Chu Tong area were studied. The results indicate that the thickness of the three soil of the three soil series is ton thin (10-12cm). The percentage of base saturation (1.4-17.416) and the content of available phosphorus (9.6-26mg/Kg) below a depth of 10cm in the soil pedon are both low, possibly causing a nutritional imbalance for tree growth. The soil reaction ranged from extremely acidic (pH3.9) to strongly acidic (pH5.5). High exchangeable (28-40 cmol(+)Kg^(-1)) an Al saturation percentage (95%) of the Hu Shan Series may restrict the growth of fine roots. The high stone content (80%) and low available water supply of the Ssu Shian Series may also restrict root growth. Planting shallow-rooted trees is recommended for the Ssu Ma Shian Series, and liming, to raise pH values and reduce the toxicity of Al(superscript 3+) and H(superscript +),should be carried out for the Hu Shan Series. Furthermore, fertilization of these three soil series is necessary to maintain the quality of the soil and normal growth rate of trees.

並列關鍵字

soil survey and classification ； physical and chemical properties of soil ； soil nutrients