salt-and-water balance 中文意思是什麼
salt-and-water balance
解釋
水鹽平衡-
Considering the water use efficiency, salt balance and crops water requirement as a whole, the suitable quota of salt water irrigation was 120 m3 / 667m2
就水分利用率、年內鹽分平衡以及作物需水規律綜合考慮，小麥生育期適宜灌溉定額為120m3 / 667m 「 。 -
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 advantages of visal program are introduced, and its application to water and salt balance modelling for tarim river basin is discussed
介紹了可視化程序設計比目前常用方法的優點，討論了可視化程序設計在塔里木河流域水鹽平衡中應用的具體問題。 -
Abstract : the advantages of visal program are introduced, and its application to water and salt balance modelling for tarim river basin is discussed
文摘:介紹了可視化程序設計比目前常用方法的優點，討論了可視化程序設計在塔里木河流域水鹽平衡中應用的具體問題。
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