irrigated area 中文意思是什麼
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To adopt well irrigation and well drainage, develop and utilize ground water resources of irrigated area can not only effectively reduce the ground water level and prevent secondary alkalization of the soil, but also provide timely irrigation to crops through well and canal complementary
摘要灌區灌溉採用井灌井排，開發利用地下水資源，不但能有效降低地下水位，防止土壤次生鹽堿化，還可以通過井渠互補，使農作物得到適時灌溉。 -
Computer software system for hydrological data reorganization in irrigated area, which will be in common use, is developed firstly. in this system, the multi - curve ( including simple curve ) fitting equation and its graph can be generated automatically
首次研究開發出多曲線擬合（包括單曲線）自動生成曲線方程和圖形的較為通用的灌區水文資料整編計算機軟體系統，從而為灌區水文資料整編和管理向現代化方向邁進鋪平了道路。 -
In addition, the hydrological data reorganization of branch channels of irrigated area and the calculation of water quantity and water rate can be done using this system
另外，本系統也可以進行灌區支渠水文資料整編以及水量、水費計算。本軟體系統無論專業性還是適用性都很強。 -
Hydrologic data collection and transmission system in weishan irrigated area
位山農業灌區水情自動測報系統設計 -
( 1 ) the actual amount of water used to irrigate in the filtration irrigated area was reduced by 58. 15 % to 81. 63 % compared with the general irrigated area, and the ultilization ratio of the moisture content increases by 50. 5 % to 81. 7 %
綜合考慮灌水量與產量的合理成本效益比和旱區的缺水問題，優先採用灌水量為133 . 33mm的滲灌。水分利用效率達到23 . 1kg mm ? hm ~ 2 ，實際灌水量比漫灌區下降了69 . 88 ，效果明顯。 -
A experiment on the water movement rule of the soil had been done before the field experiment, and then four irrigation regimes were placed in it, that is to say, three sub - irrigated areas hi contrast to a general irrigated area
在大田試驗前，做了滲灌土壤水分運動規律試驗，然後，在大田試驗中設置了四個處理，即：三個水平滲灌區和一個漫灌區對照。結果表明： （ 1 ）滲灌區的實際灌水量比漫灌區下降了58 . 15 81 . 63 。 -
The irrigated area amount to20000ha
灌溉面積共達二萬公頃。 -
By the end of 1992, the enclosed pastures of the autonomous region amounted to 544, 500 hectares with an irrigated area of 174, 000 hectares
到1992年底，全自治區草場圍欄4 87公頃、灌溉面積17 -
Some soils are affected by salinity - alkalinity : about 15 % of irrigated area suffer from varying degrees of salinity and sodicity and about 10 % from water logging
一些土壤受鹽堿影響：約15 %的灌溉面積有不同程度的鹽化和蘇打堿化，約10 %的土壤受淹水之苦。 -
The usage quantity of chemical fertilizer and diesel 0 : 1take the first place in our province, the effective irrigated area is ninety percent of the cultivated area with the development of the economy and the improvement of the quality of the people who are engaged in agriculture, the agricultural production also changes : one aspect is the number of the labours who are engaged in agricultural prosecution is decreasing year by year. the labours of the rural areas are liberated from farming step by step and more and more labours take up the third industries and processing industries of the agricultural products and so on. the agricultural production calls for saving cost, racing against time and decreasing consumption. the other aspect is the quality of the people who are engaged in the agricultural production has some changes, that is the number of the labours whose ages are below 25 is
隨著經濟的發展和從業人員素質的提高農業生產也發生了變化，一方面人力投入糧食生產的比例在逐年下降，從事農業生產的農村勞動力逐年縮少，農村勞動力逐步從農業勞作中解放出來，走向農村第三產業和農產品加工行業等等，農業生產也隨時要求實現節本、爭時、減耗;同時，農業生產中一家一戶小規模生產經營方式和產業結構調整帶來的「插花地」的種植模式，使常規的保護性耕作措施不能完全適應現代農村農業生產的實際需要，結合秸稈還田以耙耕或旋耕代替傳統的鏵式犁翻耕是當前農業生產最為適宜的耕作方式。 -
Groundwater in zhangshi irrigated area is seriously polluted by both organic and inorganic pollutants, the spatial distribution of pollutant and characteristics are as a result of various sources of pollutant
摘要張士灌區細河流域地下水中有機和無機污染均較為嚴重，其污染原因和污染特徵受多種污染源的控制。 -
A study of piecewise water distribution of the south main canal taking off from a reservoir in qu - jing irrigated area
曲靖灌區某水庫南干灌分段配水研究 -
E. design principle and exploration of appropriate scenery modality at waterfront space in inland town in irrigated area of yellow river
黃灌區城鎮濱水空間景觀設計原則與適宜景觀形態探索 -
B. space exploiture and ecological environment research of waterfront in towns at irrigated area of yellow river.
黃灌區城鎮濱水空間開發與生態環境保護研究c黃灌區城鎮濱水空間開發水景觀與水文化研究d -
The paper mainly discussed five aspects as follows : a. the introduction of waterfront in inland town at irrigated area of yellow river
全文著中討論了以下五方面內容： a黃河流域內陸城鎮濱水空間環境概況介紹b -
With the using of microsoft visual basic 6. 0, a multimedia computer - aided design system of small type pumping irrigation district is developed in this paper. provided with the live multimedia messages as well as a good man - machine conversation mechanism, this system can help the user to finish the planning of an pumping irrigated area such as the layout of canal system, the selection of pump models, the establishment of the irrigation program, the calculating of canals " parameters, the estimate of the project magnitude, the selection of the field constructions, the economic analysis of the project, the output of results, etc, a new oo ( object oriented ) programming method is adopted in this system, various softwares are integrated in this systems as well by the " automation " technic provided by vb, in addition, the multimedia technic is applied to this system for the first time, it makes the system easy to ope rate. as for the optimization of the canals " section, a new optimization method is adopted based on the existing theories about the canals " section, and in this way, with the purpose of minimizing the project ' s investment as well as a stalized canal, limited by the longituding slope, the canals " best feasible parameters can be deduced. furthermore, a integral method to reckon the earth work is developed in this paper, by this way, the estimate precision of the earthwork is enhanced notably. this paper includes the particular illumination for the developing procedure of each systems " segment, and in the end, the directions of the system are demonstrated in a sample area which lies in the zhaija village, taizhou city, jiangsu province, the running results showed that the initial purposes are achieved effectively, and it has a preferable practicability
在渠道縱橫斷面優化方面，本文在利用已經比較成熟的縱橫斷面優化理論的基礎上，提出以工程總費用最小為目標函數，以渠道縱坡i為控制變量，以渠道不沖不淤流速及灌區允許地面比降為約束條件，通過縱橫斷面聯動優化的方法得到渠道的最佳工程可行的斷面參數。另外，針對部分地區的取土困難的狀況，本文採用積分法計算渠道工程土方量，從而大大提高了土方量的估算精度，有助於準確控制工程投資規模及資金投向。本文詳細闡述了該系統所採用的編程方法、系統構成、系統各組成模塊的開發過程以及灌區規劃所採用的優化方法及原理，最後應用本系統對泰州市翟家村機電灌區進行規劃設計，運行結果證明其操作比較簡便，界面友好，運行速度快，規劃成果合理，基本達到了系統預定的要求，具備較強的實用性。 -
Aiming at the present low efficiency of well irrigation works and through pumping tests and theoretical analysis, the paper derives a method for calculating the optimum water yield, the best lifting distance and economic pipe diameter of low pressure pipe delivery system of irrigated area by wells, increasing the efficiency of motor - pumped wells
針對目前井灌工程效率低下的問題，通過抽水試驗，經過理論分析，推導出了井灌低壓管道輸水灌溉系統的最優出水量、最佳揚程和經濟管徑計算方法，從而可提高機井灌溉效率。 -
Beginning with the analyse of present situation and cause of formation of saline - alkali land, the irrigated area overall water salt trends are analysed, and the irrigated area saline - alkali land and the groundwater level and distribution law of groundwater degree of mineralization are expounded, the trendence of irrigated area saline - alkali land is put forward. then water salt balance model is estanbished according to the relationship of irrigating and drainage. regarding the irrigated area as a balance area, by analysis of mineralization degree of water pumping from the yellow river and drained off water from irrigated area, the change of the draining off water ion is forcasted in water reducing condition
課題研究主要從鹽堿地現狀與成因及灌區總體水鹽動態分析兩方面入手，闡述了灌區鹽堿地、地下水位、地下水礦化度的分佈規律，分析了灌區鹽堿地的成因及變化趨勢；根據灌區灌溉、排水條件與以上各種因素的關系，建立了灌區水鹽均衡模型；把灌區作為一個均衡區，通過對黃河來水礦化度、灌區排水礦化度的分析，預測了在灌溉引水、排水減少時排水離子量的變化；運用灌區水鹽動態模型原理，對灌區現狀（ 1998 、 2000年）與規劃水平年總體水鹽平衡進行了計算；總結分析了灌區水鹽動態變化趨勢，計算並提出了排水控制標準。 -
In this paper irrigated area water salt balance and the trends change is studied, the cause of formation and the trendence of saline - alkali land is analysized ; the foundmental theory for the administration of saline - alkali land is provided
本課題通過研究灌區水鹽平衡和動態變化，分析灌區鹽堿地的成因及變化趨勢，為鹽堿地治理提供一定的理論基礎，對解決灌區實際問題具有指導意義。 -
The land in yellow river plain river is vast, and the topography are level, and it is long to draw yellow river history irrigating, and has the famous wei ning, bronze gorge, inner mongolia bend of a river and soil special river irrigated area
黃河平原河段兩岸土地遼闊，地勢平坦，引黃灌溉歷史悠久，有著名的衛寧、青銅峽、內蒙古河套和土默特川灌區。
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