water supply potential 中文意思是什麼
water supply potential
解釋
供水能力-
Using plots with water and fertilizer fully controlled, the effect of photosynthetic characteristic and yield under different treatments of water and fertilizer coupling was investigated. the result showed that photosynthetic rates are different among treatments of water and fertilizer coupling, and the change of stomatal conductivity is the same as photosynthetic rat. there is almost no influence on evaporation rate and cellular co2 concentration the combination of fertilizer and manure under natural rainfall is beneficial to the maintenance of photosynthetic rate during grain filling, thus results in highter yield and good quality. however, the coupling of fertilizer and manure with sufficient water results in the decline of photosynthetic rate and stomatal conductivity, the yield decreased indicating there has a balance ratio between water and nutrients ( fertilizer and manure ) supply. the study proposed that the optimum management to exploring yield and qlality potential is the combination of fertilizer and manure application with no irrigation
利用可精確控制水分條件的水肥平衡場，在不同水肥耦合處理的條件下，研究了水肥耦合對玉米光合特性及產量的影響，結果表明:不同水肥耦合處理的條件下，玉米的光合速率有所不同，氣孔導度的變化與光合速率的變化表現基本一致，而對蒸騰速率、細胞間co2濃度影響不大.其中，在自然降水條件下，有機肥和無機肥的配合，有利於玉米子粒灌漿期維持較高的光合速率，表現出良好的產量潛力.充足水條件下，有機肥和無機肥的配合，光合速率及氣孔導度表現較低，表現產量有所下降，說明供水量與施肥量之間有一個平衡系數.表明黑龍江省北部黑土區自然生態條件下，為充分發揮玉米的產量潛力，最佳的管理措施是增施無機肥和有機肥的配合 -
The supply and demand of water resources was analyzed using grey theory, and the potential water - saving capacity is 1. 030 and 1. 381 billion m ^ 3 in 2010 and 2020 respectively
用灰色理論進行河套灌區的水資源供需分析，預測2010年節水潛力為10 . 30億立方公尺， 2020年為13 . 81億立方公尺。 -
The organic pollution of rose river as a raw water for drinking water supply in lianyungang is investigated. the potential pollution sources are analysed and the countermeasures are presented
闡述了連雲港市飲用水源薔薇河的有機污染現狀，分析其污染的來源，提出了應採取的控制措施和建議。 -
Therefore, if both check valves foul, and simultaneous negative supply and positive backpressure develops, the relief valve uses the air - in / water - out principle to stop potential backflow
因此，如果兩個止回閥都受到污染，並且同時出現負供應壓力和正反壓力，則這種安全閥就利用氣進/水出原理來阻止潛在的迴流。 -
Acceding to the theory of crop water requirement, maximum potential evapotranspirations are calculated by applying fao penman - monteith method, and then we obtain the water requirement, water balance and water correction factors ect. of main crops ( spring maize, summer maize, spring wheat, winter wheat, cotton ) and different type grasslands, and the space - time distribution regularities of water requirement of cropland and natural grassland are analysed, the result show : the water requirements of same kind crop in different areas are different, water satified degrees are different to different crops in the same area, and water requirement of same crop are different between years for climatic variation ; the water requirements of main crops are increasing from east to west and from south to north, water satified degrees are decreasing from east to west and from south to north. in growing season, there are deficits in crops water supply in most area, so the irrigation is needed to meet the requirement for crop growing normally
根據作物需水的理論和方法，採用計算精度較高的faopenman - monteith方法（ 1998 ）計算了半乾旱區最大可能蒸散，並基於此計算五種主要旱地作物（春玉米、夏玉米、春小麥、冬小麥、棉花）和不同類型的天然草地的需水量、水分盈虧、水分訂正系數等，分析了農田和天然草地水分供需的時空分佈規律，結果表明：不同地區同一種作物的需水量是不同的，同一地區對不同作物的水分滿足程度是不同的，而且同一種作物在同一地區隨著氣候的變化需水量也會有一個年際變化；主要作物需水量由東向西，由南向北遞增，正常生長發育的水分保證程度由東向西，由南向北遞減。 -
2. builds up decision model for water resource ' s optimal distribution of large irrigation areas in this thesis. this model resolves the optimal decision problem of how to distribute water resource to meet maximal total net profit in irrigation basins, when water supply potential of irrigation areas " canal head and bailing capability of pumping station hold the line
2 、建立了大型灌區水資源優化調度決策模型，研究在灌區渠首供水能力和泵站提水能力一定的條件下，將灌區水資源如何調配才使得灌區總凈收益達到最大值的優化決策問題。 -
95 % of water - used by agriculture come from groundwater, and it occupied 80 % of total water consumption ( 2001 ). water shortage is becoming the major obstacle of sustainable agricultural development and the key is raise efficiency of wateruse. the results of wofost model simulation showed that the yield of winter wheat was 2323 kg / hm2 under the rainfeed conditions, 5946kg / hm2 with irrigation, while the potential yield is 8485kg / hm2 with the abundance supply of light, temperature, water and fertilizer
（ 2 ）順義區農業用水的95來自地下水，農業用水占總用水量的80左右（ 2001年） ，水資源緊缺成為限制農業生產的主要瓶頸，在日趨緊缺的水資源壓力下，提高水分使用效率成為土地可持續利用的關鍵。採用wofost模型對順義區冬小麥的生產潛力及雨養條件下水分限制產量進行了模擬，結果表明：在光、溫、水、肥條件均滿足時生產潛力為8485kg hm ~ 2 ，雨養條件下水分限制產量只有2323kg hm ~ 2 。 -
As potential sites were scarce and rainfall and other sources of water were erratic, the government was so desperate that on 14 october 1859, it promised a payment of 1, 000 pounds to anyone who could come up with a proposal to develop hong kong s fresh water supply. it also set aside 25, 000 pounds to cover the expenses of hong kong s primary water supply plan
香港的天然水源匱乏，可開發的土地又有限，在苦無良策的情況下，政府在1859年10月14日毅然懸賞一千英鎊，徵求開發水源的方案，並準備撥款25 ， 000英鎊作為香港第一個大規模水務計劃的經費。
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