在干旱的热带地区，提供灌溉水的最低成本的方法通常是建造小规模的工程。例如，在洼地收集雨水，然后将其抽调至附近的农田。
Often the cheapest way to provide irrigation water in the dry tropics is through small-scale projects, such as gathering rainfall in depressions and pumping it to nearby cropland.
污染和土壤、肥料、灌溉水及空气有关。
The pollutions were related to soil, fertilizer, irrigation water and air.
可以使从管道到植物根的灌溉水和肥达到最佳值。
For optimized irrigation, water and fertilizer are conveyed directly from the pipelines to the roots of the plants.
印度的季风雨是全国两亿三千五百万农民的灌溉水主要来源。
India's monsoon rains are the main source of irrigation water for the country's 235 million farmers.
地表沉陷是由灌溉水的充填引起黄土结构崩塌造成的。
The ground subsidence was due to collapse of loess soil caused by applying irrigation water.
眼下用来培养能源作物约占灌溉水的2%，也就是44立方千米。
At the moment, about 2% of irrigated water is used to grow crops for energy, or 44km3.
而地面灌溉法的灌溉水常使各种盐分和化肥进入地下水源。
Water from above-ground irrigation system often carry salts and chemical fertilizers into such supplies.
西北干旱地带农业区的灌溉水入渗是地下水补给的重要途径。
The seepage of irrigation water is an important source of groundwater in the irrigated farm region of arid area Northwest China.
硝态氮和水溶性有机氮随灌溉水向下迁移，对底土具有培肥作用。
Nitrate and water soluble organic nitrogen were migrated with deionised water migrating and increased subsoil fertility.
黄河冲积平原中，黄河灌溉水入渗补给是该地区潜水的重要来源。
In the Yellow River lacustrine plain, the phreatic water is mainly recharged by the irrigated water diverted from the Yellow River.
高尔夫球场人工湖水域既是球场的水景景观又是灌溉水的重要来源。
The artificial lake of golf course are not only the water landscape, but also an important source of irrigation water.
农田大水漫灌现象仍然存在，渠系灌溉水损失很大，有效供水率低。
Farmland flood flooding phenomenon still exists, canal irrigation water loss is large, effective supply rate is low.
适当盐度的灌溉水可促进芦苇干物质积累，过高则不利于干物质积累。
Proper salinity of irrigation water can promote reed dry matter accumulation and excessive is not conducive to dry matter accumulation.
而不合理化肥施用方式导致化肥利用率较低，化肥随灌溉水的流失严重。
Irrational use of fertilizers, and the way led to a lower utilization of fertilizers, fertilizers is serious loss of with the irrigation water.
分析灌溉水价的作用及其制定理论、灌溉的多功能性、灌溉水的公共物品特性。
Firstly, this paper clarified the method of water pricing, the multifunctionality of irrigation, and irrigation water's character of public goods.
农业灌溉水有效利用率低下，灌溉水利用系数不足0.4，灌区节水有相当大的潜力。
The effective utilization rate of agricultural irrigation water is very low. Its utilization factor is below 0.4 that there are great potentialities on water saving in irrigated regions.
调查的地点集中在农产品相对低廉的城区，农田的灌溉水主要从当地的河流或湖泊中抽取。
The report focused on poor urban areas, where farms in or near cities supply relatively inexpensive food. Most of these operations draw irrigation water from local rivers or lakes.
新海21是节水型品种，能够较充分的利用有限的灌溉水，在干旱半干旱地区具有强大的优势。
New sea 21 can save water, can use limited irrigation water, so it has advantage of power in arid and semi-arid region.
氮素是植物必要的营养元素之一，其主要来源有：生物固氮作用、降雨和灌溉水以及人工施肥。
Nitrogen for plant nutrition is mainly obtained from three sources: nitrogen-fixing plant, rain water and manure.
应用盆栽法研究了氯在烤烟中的分布以及土壤、施肥与灌溉水含氯量对烟叶氯含量与分布的影响。
Potted cultivation was used to study the chloride distribution in different tobacco plant organ, and the relation of chloride content with soil, applied fertilizer and irrigated water in tobacco leaf.
建议应该在温室的地层中增设保温层，并指出采用栽培床以减少灌溉水引起的热能损失的必要性。
The experimental results show that the under ground heat loss is considerable in cold climate and it is necessary to build a underground heat conservation for greenhouses.
灌区量水，是实行计划用水、正确分配、合理使用灌溉水的重要手段，是实行计量收费的重要保证。
Irrigation district water-measuring is the important method and guarantee of practising using water planly, assignment accurately, using irrigation water equably and meterage.
此模型通过有限差分法模拟了降雨或灌溉水人渗、降雨或灌溉水以后土壤水分在剖面上的重新分配情况。
This model has simulated redistribution of infiltration and soil-water due to precipitation and irrigation at the profile by finite different method.
根据区域水量平衡原理，从灌溉水的损失途径分析，提高灌溉水利用率有工程措施、管理措施和技术措施。
In accordance with regional water volume balance theory, there are structural, management and technical measures to improve efficiency of irrigation water by analyzing how irrigation water losses.
阿特拉津具有土壤淋溶性，易被雨水、灌溉水等淋溶至较深层土，或是随地表径流进入地表水和地下水中。
Atrazine has a good solubility in soil, so it easily migrates to deep layer or transported to the surface water or groundwater by the river.
农业消耗了中国2/3的水，而且效率非常低——只有46%的灌溉水被农作物利用，相比之下发达国家是70%到80%。
Agriculture consumes two-thirds of China's water and is very inefficient — just 46 per cent of irrigation water reaches crops, compared to 70–80 per cent in developed countries.
而灌溉会使情况更糟：灌溉水来自河里或湖里盐分比雨水略多些，所以它除了增加土壤盐分外还加速了水位的上涨。
And irrigation just exacerbates things; irrigated water comes from rivers and lakes and is slightly saltier than rain, so it adds salt directly to the soil while speeding the water table's rise.
通过研究固定根区水分胁迫下氮形态对玉米水分利用的调节与作用机制，为局部根区灌溉水氮高效利用提供理论依据。
Regulation and the mechanisms of nitrogen form on water utilization of maize under fixed partial root-zone water stress conditions were investigated.
通过研究固定根区水分胁迫下氮形态对玉米水分利用的调节与作用机制，为局部根区灌溉水氮高效利用提供理论依据。
Regulation and the mechanisms of nitrogen form on water utilization of maize under fixed partial root-zone water stress conditions were investigated.
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