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題名 | 強酸性土壤施用土壤改良劑對臺農66號甘藷生育及產量之影響=Effects of Soil Amendments on Growth and Production of Sweet Potato "Tainung 66" in Strongly Acid soil |
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作者 | 廖乾華; 劉廣泉; | 書刊名 | 桃園區農業改良場研究彙報 |
卷期 | 53 2003.06[民92.06] |
頁次 | 頁30-36 |
分類號 | 434.317 |
關鍵詞 | 強酸性土壤; 甘藷; 苦土石灰; 有機肥; Strongly acid soil; Sweet potato; Dolomite powder; Organic fertilizer; |
語文 | 中文(Chinese) |
中文摘要 | 本試驗旨在探討台北縣萬里鄉地區強酸性土壤施用苦土石灰及有機肥等土壤改良劑對台農66號甘藷生育及品質之效應。試驗採逢機完全區集設計,4種試驗處理:施用苦土石灰3 t/ha,施用有機肥5 t/ha,施用苦土石灰3 t/ha與有機肥5 t/ha,並以不施土壤改良劑為對照。試驗結果顯示,插植前土壤pH值約為4.4,收穫時施用苦土石灰或有機肥處理之土壤pH值,提升0.2-0.4單位,對照區則降低0.03單位。二種土壤改良劑處理均可促進甘藷植株生育,提升葉片中N、P、K、Ca、Mg之含量,增加甘藷塊根收量及塊根可溶性固形物含量,且與對照處理之差異達顯著水準。其中每公頃於基肥前施用苦土石灰3 t/ha,增產率達37%,每公頃施用有機肥5噸,增產率約9%,兩者均施用,增產率高達48%。施用土壤改良劑處理之塊根可溶性固形物含量約12.6 °Brix,較對照區顯著提升1.1 °Brix。經相關分析結果顯示,施用苦土石灰對改善甘藷品質及塊根產量與提昇甘藷葉片中Ca及Mg含量呈顯著的相關。 |
英文摘要 | An experiment was conducted to study the effects of soil amendments on the growth, quality, and yield of sweet potato 'Tainung 66' in strongly acid soil at Wanli, Taipei county. A randomized complete block design with four replications was used. Four treatments included the applications of 3 tons of dolomite powder, 5 tons organic fertilizer, 3 tons of dolomite and 5 tons organic fertilizer, and no amendment as the check. The pH of amendment treated soil, initially at 4.4, increased 0.2-0.4 units at harvest, but decreased about 0.03 unit in the check. Plant growth of sweet potato was improved by soil amendment treatments, the N, P, K, Ca and Mg contents of leaves and the content of soluble solid compound in root were also increased. Significant differences in plant growth and yields occurred due to application of soil amendments. The root yield of sweet potato increased about 37% by dolomite powder at a rate of 3 t/ha, about 9% by organic fertilizer at a rate of 5 t/ha and about 48% by combined use of two soil amendments. The average soluble solid compound content increased 1.1 °Brix by soil amendment treatments. Increases in soluble solid compound content and yield of sweet potato root were significantly correlated with increasing the Ca and Mg content of mature leaves. |
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