頁籤選單縮合
題 名 | 泥岩改良紅壤之效應=Use of Mudstone as a Red Soil Amendment |
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作 者 | 萬鑫森; 黃瓊慧; 劉黔蘭; | 書刊名 | 中國農業化學會誌 |
卷 期 | 35:3 1997.06[民86.06] |
頁 次 | 頁288-295 |
分類號 | 434.227 |
關鍵詞 | 泥岩; 表面電荷; 團粒穩定性; 水分特性曲線; Mudstone; Surface charge; Aggregate stability; Water retension curve; |
語 文 | 中文(Chinese) |
中文摘要 | 本文主要探討泥岩對紅壤改良之效果。以平鎮、后里及大林三種紅壤為試驗材料 ,分別添加 0、0.1、0.5 及 1.5% 之南化及明德泥岩,噴灑 20% 蒸餾水且攪拌均勻後,靜 置六個月,取出風乾、過篩,然後分項進行理化分析比較。 其結果如下:(l) 試驗土壤中, 以南化泥岩處理者,土壤零電點末呈遞減趨勢; 以明德泥岩處理者,土壤零電點則隨處理量 之增加而降低。土壤表面負電荷量均隨泥岩處理量之增加而提高,陽離子交換容量亦因而隨 之提高。(2) 紅壤 pH<5.5 時,交換性鋁為作物生長之主要限制因子,而經泥岩處理之紅壤 可提高 pH 值,因此交換性鋁隨處理量之增加而降低。(3) 由多重濕篩法測定土壤團粒穩定 性,泥岩對平鎮及后里紅壤有增加其團粒平均粒徑之趨勢; 而大林紅壤,由於其粘粒含量低 ,再加上南化及明德泥岩含鈉量高,分散了土壤之團粒,因此,泥岩對大林紅壤團粒平均粒 徑提高無明顯之效應。(4) 由土壤水分特性曲線得知,以泥岩處理紅壤之保水能力均隨泥岩 處理量之增加而提高。 |
英文摘要 | The purpose of this study was to examine the effect of mudstone powder as an amending material for three red soils taken from Pingchen, Howlii, and Talin, respectively. From the experimental results, the following facts can be observed: (1) For all three red soils, the mudstone taken from Nan-huah had no effect on the zero point of charge; however that taken from Ming-derl decreased in pHo. The net negative charge as well as the cation exchange capacity of the three red soils increased with the amount of mudstone applied. (2) Exchangeable Al was a limiting factor on the crop when the pH <5.5. The exchangeable Al decreased with the amount of mudstone applied due to the fact that the mudstone powders increased the pH values of the three red soils. (3) The musdstone could increase the log-mean diameter of aggregates of the Pingchen and Howlii red soils. There was no significant amending effect for any of the mudstone powders on the aggergate stability of the Talin red soils due to the low clay content and the high content of soluble sodium in the mudstone. (4) From the water retension curves, we can see that the water content at field capacity increased with the amount of mudstone applied. |
本系統中英文摘要資訊取自各篇刊載內容。