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題 名 | 不同輪作制度對土壤理化性及水田雜草相之影響=Soil Property and Weed Incidence as Influence by Preceding Cropping Systems |
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作 者 | 鄭書杏; | 書刊名 | 花蓮區農業改良場研究彙報 |
卷 期 | 14 1997.06[民86.06] |
頁 次 | 頁79-96 |
分類號 | 434.267 |
關鍵詞 | 輪作制度; 水田; 雜草; 土壤理化性; Cropping system; Paddy field; Weed; Soil property; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究之目的在探討雙期作水田經多年施行不同輪作制度後,對水田生態環境及恢復種植雙期作水稻的生產之影響。試驗係利用台灣省花蓮區農業改良場所施行之連續七年之水田不同輪作制度試驗,包括:(A).水稻∼水稻,(B).落花生∼水稻,(C).水稻∼大豆及(D).玉米∼大豆後之試驗田進行。水稻以梗稻之臺梗六號(TK.6)供試,供試驗之雙期作水田,其土壤質地為坋質壤土(silt loam),土系屬三棧系(Sanchan Series, Sc)。本試驗經七年輪作處理後之雙期作水田經轉作旱作物後,不論對土壤理化性或雜草相均有影響。再恢復種植雙期作水稻,田間尖葉類雜草之發生不論第一、第二期作都是以連續水田發生量最高,而以第二期作尖葉類雜草之發生量高於第一期作。闊葉類草僅發生於連續旱田處理後之水稻第一期作,其餘輪作制度後之一、二期作水稻田則無闊葉類草之發生。pH值變化雖經多年不同輪作制度後而有差異,但恢復種植二期作水稻後,差異不明顯。經一期作種植水稻後,土壤中有效養分之差異,除有效性鉀以外,均不顯著。養分的吸收情形有明顯之影響,再種植水稻不但可加以改善,對水稻產量亦可提昇。因此,水田轉作制度以水旱輪作方式最佳;而以豆科作物加入輪作系統中更可以改善地力。 |
英文摘要 | The study is attempted to determine the soil property and weed incidence fields on which various cropping systems had been adopted for seven years previously. An one year field experiment was conducted in the Hualien District Agricultural Improvement Station. The cropping systems preceded this experiment included (A) rice-rice, (B) peanut-rice, (C) rice-soybean and (D) corn-soybean, from 1986 to 1992. Soil property analysis and weed investigation were taken. The effect of soil property on the growth and yield performance of rice cultivar TK6, were measured simultaneously. Experimental results showed that soil property and weed incidence were changed by cropping patterns after the paddy field diversion. The recropping rice field was free form broad leaf weeds preceded with paddy-dry land rotation systems, but more narrow leaf weeds were observed as the continuous rice system. Soil available K �� O and Cu increased while re-cropping at first crop, soil organic matter, available P �� O ��, K �� O, MgO, Mn and Zn increased at second crop whereas the CaO decreased when re-cropping rice system was adopted. Results indicate that the effects of grain yield performance on rice associated with rotation may have been due to a general improvement on soil property and nutrition uptake by rice. |
本系統中英文摘要資訊取自各篇刊載內容。