Returns on fertiliser use are diminishing.
施用化肥的收益也正在减少。
China could cut fertiliser use by at least a third without ill effects.
因此，中国至少可以减少三分之一化肥的用量，而不会造成任何影响。
So increased fertiliser use would boost yields in some countries and be counterproductive in others.
因此，增加的化肥使用将在一些国家增产，而在其他国家适得其反。
For example higher fertiliser use raises water productivity but adds pollution to the environment.
例如，增加化肥使用量会提高水分生产力，但会对环境造成污染。
The gas is produced as a byproduct of fertiliser use in agriculture and other industrial processes.
该气体是农业施肥及其他工业活动的副产品。
This is largely because of reductions in fertiliser use and the amount of nitrogen leaching from manure.
这是相当大的一部分，因为可以减少施肥和从动物粪便中滤出的氮。
Natural soil fertility is dropping in many areas because of continuous industrial fertiliser and pesticide use, while the growth of algae is increasing in lakes because of the fertiliser run-off.
在很多地区，由于工业化肥和农药的持续使用，导致自然土壤的肥力正在下降，然而化肥的流入却导致湖泊中藻类生长得越来越快。
But primarily, because nitrogen is a fertiliser, it favours wild plants that can maximise the use of nitrogen to help them grow.
但首先因为氮是一种肥料，它有利于那些能最大化利用氮素进行生长的野生植物。
Other ideas include extracting water and leaving a dry residue for use as fuel or fertiliser, or making latrines into fly traps, hence cutting the spread of disease.
其他构思还有抽离水分将干燥的剩余物用作燃料或化肥，将公共厕所设成捕蝇器从而切断疾病的传播途径。
However, the researchers stopped short of calling for a fertiliser tax to reduce the use of nitrogen in agriculture.
然而，研究人员却反对增加化肥生产商的赋税来减少农业中氮肥的使用。
Not only that, many farmers would miss the manure, though the use of animal fertiliser is less important than it once was.
不仅如此，农民们将会缺少肥料，尽管动物类肥料已经没有从前重要。
Experimental crop plants that use nitrogen more efficiently provide the same yields as normal crops with less fertiliser.
能更有效地利用氮肥的实验性农作物能在使用较少肥料的情况下做到和普通农作物的产量一样。
By contrast, fertiliser subsidies encourage futile over-use of nitrogen in parts of China.
但与此形成对比的是，中国的部分地区却在通过化肥补贴来鼓励氮肥的无效的过度使用。
Since 1990 Chinese grain production has been roughly stable but the use of fertiliser-which is heavily subsidised - has risen by about 40%.
自1990年以来，中国的粮食产量已经基本上稳定了，但是化肥的使用——主要是通过农业补贴的形式——却增加了40%。
Chinese researchers say overuse of nitrogen fertiliser is poisoning the country's air, soil and water, and that farmers could reduce its use without compromising crop yields, Nature reports.
据《自然》杂志报援引中国研究者报道，过度使用氮肥会致使中国的空气，土壤及河流受到污染，而农民减少使用化肥并不会影响到粮食产量。
The first commercial use of QCS04 sulfur tolerant shift catalyst in Shanxi Fertiliser Plant was described in this article.
本文介绍了QCS-04型耐硫变换催化剂在山西化肥厂首次工业应用情况。
For example, in countries like the United States, where most farming operations use large applications of fertiliser, changing such long-standing habits will require a change of system.
比如，在像美国这样的，大部分农业操作过程中都会使用大量肥料的国家，改变这种存在已久的习惯将需要一种系统的变化。
China already uses 30 percent of all the fertiliser produced in the world even with its per hectare use less than half of Germany or Japan.
中国在每一公顷耕地上使用化肥少于德国或日本使用的一半的同时，已经使用了全球30%的化肥。
China already uses 30 percent of all the fertiliser produced in the world even with its per hectare use less than half of Germany or Japan.
中国在每一公顷耕地上使用化肥少于德国或日本使用的一半的同时，已经使用了全球30%的化肥。
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