为确定烟草的适度亏水效应及烟草水分生理灌溉指标，进行了烟草蒸渗仪试验，通过控制土壤水分下限研究烟草的适度亏水效应。
Experimental study was performed to determine the moderate water deficit effect and physiological irrigation index of tobacco with lysimeters by controlling the lower limit of soil water content.
在其他方面，灌溉、雨水控制、能量模型和树木带来的利益都有具体指标。
Specific metrics exist for irrigation, stormwater control, energy modeling, and benefits produced by trees, among others.
首先，通过污水对土壤、农作物、地下水以及水体功能的影响分析，建立了污水灌溉安全性评价的指标体系。
At first, through analyse the influence on the soil, crops, groundwater and function of water body of sewage, the index system of sewage irrigation security appraisal have been set up.
单位水量粮食生产能力是综合反映灌溉用水水平和粮食生产状况的重要指标。
The food yield per unit water is an important index, which indicate the efficiency of the irrigation water use and status of food production.
根据华北地区冬小麦干旱的特点，确定了小麦各发育阶段在有限灌溉条件下的干旱指标及发生概率。
The drought indexes of winter wheat in various development stages under limited irrigation are determined and the drought probabilities are calculated.
土壤水分含量是土壤的一项重要指标，它在农业的生产、灌溉以及基础理论研究中具有重要作用。
The moisture content of soil is one important indicator of soil which plays an indispensable action in the production and irrigation of agriculture and research of basal theory.
本论文是国家863课题“都市再生水灌溉绿地水质控制指标及安全性评价”的一部分。
This research is a part of China national 863 project ---Water Quality and SafetyEvaluation of Urban Reclaimed Wastewater for Green Land Irrigation.
灌溉条件下各产量指标明显高于干旱地区。
The location under irrigated conditions had a higher yield value than under dry land conditions.
水分生产率是评价农业灌溉用水管理水平和节水效果的一个重要指标。
Agricultural water productivity is an important indicator to assess the effect of irrigation water management and water conservation.
灌溉水利用系数是衡量农业节水效果的关键指标。
Water efficiency of irrigation is a key criterion for evaluation of agricultural water saving effect.
灌溉退水中部分污染物浓度较灌溉水上升，个别单项指标超标，但不构成综合污染。
The concentrations of some pollutants in the outflow are higher than those in the irrigated water. The water is not comprehensively polluted with few indices beyond the standard.
之后，对灌溉效益特点进行深入地分析，并使用模拟方法，以经济净现值为指标对研究区的农业灌溉方案的经济效益进行模拟求解。
After these, this paper analyses the features of irrigation benefits, and calculates the average benefit of every scheme with simulated method, using Economic Net Present Value.
之后，对灌溉效益特点进行深入地分析，并使用模拟方法，以经济净现值为指标对研究区的农业灌溉方案的经济效益进行模拟求解。
After these, this paper analyses the features of irrigation benefits, and calculates the average benefit of every scheme with simulated method, using Economic Net Present Value.
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