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| 題 名 | 塑膠排水浪管改良稻田排水防止稻株鐵過多及鉀銅缺失之研究 |
|---|---|
| 作 者 | 謝慶芳; 王錦堂; 林昭遠; | 書刊名 | 臺中區農業改良場研究彙報 |
| 卷 期 | 7 1983.12[民72.12] |
| 頁 次 | 頁90-98 |
| 分類號 | 434.111 |
| 關鍵詞 | 防止; 浪管; 排水; 塑膠; 鉀銅; 稻田; 稻株鐵; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本試驗發現生長于排水不良水稻之所以生育不良,係因土壤中有效性 鐵之含量過多所致。稻株中鐵之含量過多及鉀銅之缺乏以致阻礙水稻之正常生長 及分蘗,並誘使稻株老葉產生許多細小之褐斑或�袨部C埋設4"塑膠排水浪管可 以有效地解除長期之積水現象,並將過多之鐵排除,使水稻根部恢復正常,稻株 中之含鐵量大幅減少,而含鉀與銅量增加,水稻發育完全達到正常之程度。埋設 塑膠排水浪管並施穀殼之效果與埋設塑膠排水浪管者相似,但稻株之含鉀量,株 高及分蘗數均有增加之傾向。本排水不良稻田土壤之硫黃含量相當高,而埋設4" 塑膠排水浪管以改良排水也使土壤中之硫黃含量減少一半以上,但試驗田對照區 與排水區均未發生硫化氫毒害現象,可能因為土壤中鹽基含量較高之關係。 |
| 英文摘要 | The results of the experiments suggested that poor drainage and excessive amount of available iron in the soil caused the over-accumulation of iron and deficiencies of potassium and copper in rice plants to retard the normal growth and tillering, and to induce the bronzing or tiny brown spots on the old leaves of the rice plants in the check plot. Improve the drainage conditions of the soil by burying 4" of corrugated drainage pipe at the depth of 60 cm from the soil surface was very effective for removing off the excessive water and iron, and thus reduced the Fe content and increased the potassium and copper contents in rice plant for the normal growth of riceplants. Constructing the same drainage pipe line at the same depth with additional soil treatment of rice hull at the rate of 15 tons/ha showed similar effects, but the potassium content in rice plants, the plant height, and tiller number were tended to be higher. The sulfur content in this poorly drained paddy soil was rather high, and constructing 4" of corrugated drainage pipe line helped removing off more than 50% of sulfur in the soil, however the hydrogen sulphide toxicity was not found either in the check plot or drained plot. It was possibly due to the high base contents in the soil. |
本系統中英文摘要資訊取自各篇刊載內容。