頁籤選單縮合
題名 | 茶園土壤管理對溶磷細菌之影響 |
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作者姓名(中文) | 張鳳屏; | 書刊名 | 臺灣茶業研究彙報 |
卷期 | 13 1994.01[民83.01] |
頁次 | 頁61-69 |
分類號 | 434.817 |
關鍵詞 | 茶園根圈土壤; 溶磷細菌; 土壤管理; Tea rhizospheric soils; P-solubilizing bacteria; Soil management; |
語文 | 中文(Chinese) |
中文摘要 | 溶磷細菌數量在茶園根圈土壤較非根圈土為高,且根圈土壤pH亦較非根圈土壤 低,可能為根系分泌有機酸及溶磷細菌互作用的關係。相同環境土壤管理下,不同品種茶樹 根圈土壤中溶磷細菌數量無多大改變。施用極低量與過量化學肥料將降低溶磷細菌數量,有 機質肥料與化學肥料適量配合使用,可增進溶磷細菌族群繁殖,土壤有機質豐富可提供溶磷 細能源而大量增殖。土壤pH、有效性磷(Mehlich No.3)、交換鉀、鈣、鎂、錳、鋅及鋁含 量與溶磷細菌數量無明顯相關,但土壤pH低於3.8,交換性鈣低於50mg/kg或高於 1000mg/kg、土壤排水不良且施肥量過多,將減少溶磷細菌數量。 |
英文摘要 | Population of P-soulubilizing bacteria sp. (PSB) in rhizospheric soils of tea garden was apparently higher than that of non-rhizospheric soils. The pH of rhizospheric soils was lower than that of non-rhizospheric soils, suggesting that the interaction between root-excreted acids and P-solubilizing bacteria may play an important role in this phenomena. Under the same soil management, the PSB number (based on the plate count) in the rhizopheric, oils did not vary with plant vari-eties. Low or high application of fertilizers resulted in reducing the PSB number in soils. Appropriate application of chemical and organic fertilizers benefited the increase of PSB population. PSB number was significantly correlated with soil organic matter content. Low soil pH (<3.8), inappropriate soil Ca (exchangeable, <50 mg/kg or >1,000 mg/kg ) and bad soil drainage with over dosage of fertilizers wold lower down the PSB number in tea soils. |
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