(3.235.25.169) 您好!臺灣時間:2021/04/20 18:07
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:鄭書杏
研究生(外文):Cheng, Shu-Hsing
論文名稱:不同輪作制度對後作水稻生產力之影響
論文名稱(外文):Rice (Oryza sativa L.) Productivity as Influenced by Preceding Cropping Systems
指導教授:白鏹
指導教授(外文):Pai, Chiang
學位類別:碩士
校院名稱:國立中興大學
系所名稱:農藝學研究所
學門:農業科學學門
學類:一般農業學類
論文種類:學術論文
論文出版年:1994
畢業學年度:82
語文別:中文
論文頁數:75
中文關鍵詞:消費型態稻田轉做
相關次數:
  • 被引用被引用:1
  • 點閱點閱:198
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0

  早期臺灣水田均種植兩期作水稻,然近年來,因消費形態改變,稻米消費量漸減,使得稻米生產過剩。因而稻田轉作、調整資源利用,成為本省農業上急待解決之問題。過去幾年有關於水稻田轉作栽培之試驗研究,大多局限於作物與環境因子之交感,或轉作後之旱作物表現之負及其可能遭遇之限制因子。而對於水旱田長期輪作情況下,作物產量及生產力與環境因子之交感作用,以及再恢復種植水稻的相關資料則非常缺乏。因此,本研究之目的在探討變期作水田經多年施行不同輪作制度後,恢復種植雙期作水稻對水稻生產力之影響。試驗利用台灣省花蓮區農業改良場所施行之連續七年之不同輪作制度試驗,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。試驗以型水稻之臺粳六號(Tk.6)供試,原試驗田為雙期作水田,土壤地為坋質壤土(silt loam),土系屬三棧系(Sanchan Series, Sc)。本試驗恢復種植水稻後,尖葉類草之發生不論第一、第二期作都是以連續水田發生量最高,而第二期作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一期作,其餘則無闊葉類草之發生。pH值變化雖經多年不同的輪作後而有差異,但恢復種植水稻後,差異並不明顯。而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:一般而言土壤中有效養分高,其水稻吸收量亦較高。長期不同制度輪作後再恢復中植水稻,水稻病害之發生有不同程度之影響,不論第一、第二期作均以連續旱作後發生病害較輕徵,共次為水稻∼大豆輪作之後。而落花生∼水稻處理區則與對照之連續水田發生情形相近。此种差異與土壤理化性改變,以及作物對營養之吸收能力大小有關。根據本試驗兩期作水稻產量之綜合表現,發現在不同作物輪作情形下,落花生∼水稻輪作後再種植水稻當期作產量表現高於連續水田,而次期作之水稻產量已經與連續水田之表現相同。水稻∼大豆輪作後種植水稻產量表現高於連續水田,而再繼續種植水稻其產量之表現仍高於連續水田。至於連續旱田方式高於其它輪作方式,但二期作產量表現與水稻∼大豆輪作區差異不顯著,而以玉米∼大豆輪作後之水稻產量瑐現最佳。水稻之家藝性狀及其產量成要素,長期不同耕作制度輪作後,一期作水稻株高,穗重、一穗穎花數、一穗實粒數及千粒重均受不同程度之影響。而二期作水稻株高、穗長、一穗穎花數及稔實率受影響。水稻第一期作由於榖粒重受不同輪作制度後之影響,以玉米∼大豆輪作後最高,與其它耕作制度差異顯著,其收穫指數亦高於其它輪作制度;至於二期作,則不受不同輪作制度輪作後之影響。總結以上結果,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;而豆科作物加入輪作系統中更可以改善地力。


  Traditionally two rice crops per year was very popular on paddy fields in Taiwan. it is widely recognized that living standards in Taiwan had been greatly improved as a result of rapid economic growth in the past years. Decreasing in rice consumption has contributed to rice over-production wihic exerts a critical impact in the agricultural economy. Therefore. the paddy field diversion plan which was first introduced by the government in 1983, aimed to reduce the production of rice. This study attempted to determine the rice productivity of paddy fieleds on which various cropping systems had been adopted for severn years. An one year field experiment was conducted in the Hualien District Agricultural lmprovement 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 To investigate the effect of soil property on the growth and yield of rice cultivar TK6, randomized complete block design was laid out with three replications. Major agronomic traits, yield and yield components were measured; soil analysis and weed investigation were taken.
  Experimental results showed that cropping patterns could change soil property or weed incidence after the paddy field diversion Re-cropping two seasons of rice in different cropping pattern, the productivity was.influenced by various cropping systems. A positive effect of rotation on rice yield was observed in both cropping systems compared with continuous rice. Field was free from broad leaf weeds, but more narrow leaf weeds were observed as the continuous rice. Soil available K2O and Cu increased while re-cropping first crop of rice. When second crop of rice, soil organic matter, available P2O5, MgO, Mn and Zn increased except that CaO decreased. Results suggest that the increased rice yield associated with rotation may have been due to a general improvement in soii property and plant nutrition.

QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔