demand irrigation 中文意思是什麼

demand irrigation 解釋
需水灌溉
  • demand : vt 1 要求，請求；需要。2 詢問，盤問，追究。3 【法律】召喚。vi 要求，查問。 ★後面子句中的動詞，美...
  • irrigation : n. 1. 灌溉；水利。2. 【醫學】沖洗（法），〈pl. 〉沖注洗劑。adj. -al ,-ist n. 灌溉者，水利專家。
  1. Rice, one of the three major crops in the ningxia irrigation area of yellow river. is widely planted. the traditional irrigation techniques of rice are flood irrigation and deep storage. which need more water consumption and have higher application volumes. with the increase in population, the development of industrial and agricultural production and the uniform catchment agreement for the water resource of yellow river, the supplying and demand contradiction of the water resources in ningxia is more evident, then drang is presented for developing water - saving and efficient agriculture

    近年來，水稻節水控灌技術在寧夏引黃灌區推廣后取得了顯著的經濟和社會效益。但如何確定節水控灌技術是現有條件下適合寧夏引黃灌區特別是鹽堿耕地的水稻種植先進灌溉技術，如何確定鹽堿地的淋洗水量及灌水模式，探索節水控灌技術在鹽堿地的適應性，研究水稻節水控灌技術增產機理，對進一步推廣水稻節水控灌技術及改良、開發鹽堿地和鹽堿荒地具有重要意義。
  2. Two aspects of the problem are discussed : one is that lift irrigation is no need when abstraction volume capability of canal head can meet the demand ; the other is that lift irrigation is in need when abstraction volume capability of canal head can not meet the demand

    它包括兩個方面：一是當渠首可引水量能滿足灌區灌溉用水量時，則不需要提水灌溉；二是當渠首可引水量尚不能滿足灌區灌溉用水量時，則需提水灌溉來補充灌溉用水量。
  3. At present, whereas so many reasons such as its using function changing from irrigation to city water supply, the increasing of importance, the original design standard on the low side, the damage and aging of structure, the demand for seismic fortify in strong earthquake region and offering data of technical alteration for adding flux aftertime, it is important for safety and seismic capability of this aqueduct bridge

    目前，該渡槽使用功能由灌溉輸水改為城市供水、實際重要性提高、鑒于原設計標準偏低、結構的病害和老化破損以及地處強震區對抗震設防的要求，為日後加大流量進行技術改造提供依據，因而急需對渡槽作較詳細的安全可靠性評估和抗震性能評估。本文針對該渡槽進行了原位現場檢測，並對其進行結構分析計算和結構的安全性能與抗震性能的評估等方面的工作。
  4. According to the optimal irrigation scheduling, the irrigation demand hydrographic in four representative years of huimin and wudi are computed

    在灌溉制度模擬優化的基礎上，推求出代表年惠民、無棣推至田間的基本灌溉需水量和需水過程。
  5. Abstract : in this paper, the major problems in water resources, flood and drought, and water environment in china are analysed, and new subjects of study on hydrology are pointed out, including the uncertainty of hydrological phenomena, the effect of human activities on hydrology, the calculation of water level frequency, the optimum effcet of water resource development and utilization, the analysis of water supply and demand, the mechanism of water - saving agricultural irrigation, flood and drought prevention, etc

    文摘:從水資源開發利用與保護、水旱災害防治等方面論述中國當前存在的主要水問題：水危機和水浪費同時存在、水污染日趨嚴重、防洪減災任重道遠、生態環境破壞嚴重、全球氣候變暖產生不利影響；進而論述水文學研究面臨的新課題：水文現象的不確定性、人類活動對水文的影響、水位頻率計算、水資源開發利用的最佳效應、水資源供需分析、農業節水灌溉機理及水旱災害的防治，並指出必須加強對這些新課題的研究
  6. Sparedescription : in this paper, the major problems in water resources, flood and drought, and water environment in china are analysed, and new subjects of study on hydrology are pointed out, including the uncertainty of hydrological phenomena, the effect of human activities on hydrology, the calculation of water level frequency, the optimum effcet of water resource development and utilization, the analysis of water supply and demand, the mechanism of water - saving agricultural irrigation, flood and drought prevention, etc

    描述:從水資源開發利用與保護、水旱災害防治等方面論述中國當前存在的主要水問題：水危機和水浪費同時存在、水污染日趨嚴重、防洪減災任重道遠、生態環境破壞嚴重、全球氣候變暖產生不利影響；進而論述水文學研究面臨的新課題：水文現象的不確定性、人類活動對水文的影響、水位頻率計算、水資源開發利用的最佳效應、水資源供需分析、農業節水灌溉機理及水旱災害的防治，並指出必須加強對這些新課題的研究
  7. Technical demand of reclaimed water reuse for landscape irrigation

    園林灌溉對再生水回用的技術要求
  8. In this passage, author has studied the quota of irrigation that can make water used economically for various plants, if the irrigation quota can be lowered from 6795 m3 / a to 4500 m3 / a during the processes of irrigation, there will be a saving water amount of 3. 386million m3 / a, in shiyang river basin. there is no doubt that we can open the second source of river water that can provide the possibility of transporting 300 million m3 / a water amount to lower reaches of the river. in this paper, there are some analysis and prospects for the future situation of supply and demand of water resources in 2010

    民勤水資源減少的主要原因是人為因素，如全流域人口增加、中上游耕地面積擴大，用水量增加，造成灌區重心上移；沒有樹立可持續發展觀，在經濟中搞短期行為；對石羊河流入民勤水量不斷減少、地表水、地下水轉化活躍、生態用水問題突出等方面進行了分析論證；對目前開發利用現狀、供需狀況進行了較為詳細的計算和評價；通過對各種農作物節水灌溉定額的研究，若從現狀灌溉定額6795m ~ 3 ha降低到4500m ~ 3 ha實施灌溉，石羊河流域將節水3 . 3867億m ~ 3 ，這無疑于開辟了第二水源，提供了向下游調水3億m ~ 3的可能性。
  9. Based on the principle of fuzzy, utilizing the comprehensive evaluation model of limit analysis on the development of water resources, the authors selected evaluation factors include irrigation ratio of total land, coefficient of product water, degree of water exploitation, water supply and demand modulus, per capita water supply and ecological water use ratio to analyze

    摘要基於模糊數學理論的區域水資源開發利用閾分析方法，選取灌溉率、產水系數、水資源開發程度、供需水模數、人均供水量和生態用水率7個主要因素作為評價因素，以杭州市區為例進行具體計算與分析。
  10. The capsim model, originally developed by the center for chinese agricultural policy research of the chinese academy of sciences, is the first and most comprehensive model for chinese food demand, supply and trade analysis at the national level. the podium model, developed by the international water management institute, is a tool for accounting of water resources at the basin level. capsdvi - podium has been used as a tool in this paper for analyzing food security and water balance scenarios of china in 2020 based upon the database about food and water situation at the national level, provincial level, basin level and county level, hi accordance with such analysis, this paper puts forward policy recommendations for irrigation diversion of water, regional distribution of agriculture and food security

    因此，論文將糧食需求和生產、灌溉需水和水資源保障緊密的聯系起來，在不打破水資源流域特性的基礎上，以全國和九大流域片為研究對象，通過利用全國、流域、省級、縣級統計資料和農產調查及專家訪談資料所建立的包含農業生產、糧食供求、灌溉用水和水資源等指標體系在內的中國糧食安全與水資源數據庫，以原來中國科學院農業政策研究中心（ ccap ）開發的以部門均衡理論為基礎的農業政策分析和預測模型（ capsim ）和國際水資源管理研究所（ iwmi ）開發的以流域水資源核算理論為基礎的水資源政策分析模型（ podium ）為依託，發展了capsim ? podium模型，利用該模型為工具，系統、全面地分析了未來全國和九大流域片的灌溉水平衡和糧食安全情景，在此基礎上提出我國灌溉用水、區域農業布局和糧食安全政策。
  11. In the years ahead, we expect improving farm incomes and rural education initiatives to propel demand for organic fertiliser and advanced irrigation systems

    未來幾年，我們預計不斷上升的農村收入以及農村教育方面的舉措，將推動對有機肥料和先進灌溉系統的需求。
  12. This research stress on both of water - saving irrigation technique and engineering reform plan in the irrigation, investigates current situation and main existing problem including geography, geology, social economic condition and so on. . the necessity and feasibility of water - saving engineering reform are proved through balance analysis of water supply and demand relation in the area, then the construction scale and water - saving technique of reform is presented

    本文研究主要從灌區節水灌溉技術和工程改造方案兩方面入手，調查研究灌區現狀及存在的主要問題、灌區的自然地理、地質、社會經濟等基本情況，通過灌區的水資源供需平衡分析，論證了灌區實施節水改造的必要性和可行性。
  13. Based on material collection, review and analysis of the statistic, agriculture, forest, environment, irrigation works and land resource, the paper illustrate that china has good foundation of data for the sustainable land use, and it can be satisfied for the demand of the sustainable land use monitoring. however there is still have som e reduplication, lack of the standard and ambiguousness of the division of the work, which need to be regulated

    通過對統計部門、農業部門、林業部門、環保部門、水利部門和國土資源部門等六個系統有關的監測內容、方法的調研和資料搜集，本文認為，我國土地可持續利用監測具有較好的數據基礎，現有各部門的監測、調查統計內容基本涵蓋了土地可持續利用監測的各個方面的需求，但也存在著內容重疊，分工不明和標準化程度不高的問題，需要進一步整合和規范。
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