In theory extra carbon dioxide in the atmosphere should help plants grow faster, though whether this actually happens may also depend on the amount of nitrogen in the soil.
理论上，大气中二氧化碳含量增多会使作物生长加快，实际上，还要看土壤中所含氮成分的多少。
And scientists say it will grow larger in years to come, if something is not done to reduce the amount of nitrogen in the Mississippi River.
科学家表示，如果不采取措施减少密西西比河的含氮量，未来几年死水区会愈发扩大。
Under lower fertility conditions, the fertilization with the appropriate amount of nitrogen in this area could increase wheat yield and enhance wheat drought resistance.
在旱地土壤肥力低的条件下，一次施适量氮肥，可促进小麦增产，增强植物的抗旱性。
The amount of nitrogen needed will increase as yield increases.
随着产量增加，需氮量也要增加。
The applied amount of nitrogen had a significant effect on grain yield.
施氮量对杂交稻的产量形成和氮肥利用的影响十分明显。
In particular, an increase in the amount of nitrogen applied has the effect of increasing the MPP of potash.
特别是氮肥用量的增加具有提高钾肥边际产量的作用。
The method presents many problems such as large amount of nitrogen consumption, high cost, environmental pollution, etc.
该方法存在氮气耗费量大、费用高、污染环境等问题。
The amount of nitrogen accumulation in wheat plant was also associated with the yield and quality of protein in wheat grains.
生育期氮素积累量对蛋白质含量与产量有显著的影响。
Timely exposing paddy field to sun, controlling ineffecient tillers and strictly controlling application of amount of nitrogen;
及时露晒田，控制无效分蘖，后期严格控制氮肥的用量；
According to the nitrogen release rate gained from experiments, the release amount of nitrogen from the urban channels was estimated.
根据模拟试验中氮的释放率，估算城市内河中氮的释放量。
In the eutrophication process of Wuli lake, large amount of nitrogen, phosphorous and organic matter accumulated in the sediment of the lake bottom.
在五里湖富营养化过程中，氮、磷及有机物质在湖底沉积物中大量积累。
The low rate of sowing, wide space between rows, proper amount of nitrogen and phosphorous and a timely irrigation also had good effect on seed pr...
低播量、宽行距、施适量的氮磷肥料、适时灌溉对红豆草种子生产亦有良好的效果。
There was significant positive correlation among the applied amount of nitrogen, percentage of diseased plant, index of disease and percentage of yield loss.
施氮量、病株率、病情指数、产量损失率间呈极显著正相关。
Yellow water contains large amount of nitrogen compounds, reducing sugar, alcohols, aldehyde, acids, esters, flavoring substances and some beneficial microflora.
黄水中含有大量的含氮化合物、 还原糖及醇、醛、酸、酯等香味物质以及有益微生物菌群。
The low rate of sowing, wide space between rows, proper amount of nitrogen and phosphorous and a timely irrigation also had good effect on seed production of sainfoin.
低播量、宽行距、施适量的氮磷肥料、适时灌溉对红豆草种子生产亦有良好的效果。
With the discharging of the waste water containing a large amount of nitrogen and phosphorus into the lakes and rivers, the pollution of the fresh water becomes more and more serious.
随着大量含氮和磷的废水流入湖泊和江河，导致淡水污染现象日趋严重。
The total absorption of nitrogen increased with the amount of nitrogen topdressing, but the proportion of absorption nitrogen during the blooming period to total nitrogen were downtrend.
棉花总吸氮量随著追氮量的增加而增加，但花铃期吸氮量占总吸氮量的比例呈下降趋势。
With the increase in discharging of waste water containing large amount of nitrogen and phosphorus to lakes and rivers, fresh-water pollution has been becoming a more and more serious problem.
随着大量含氮和磷的废水流入湖泊和江河，导致淡水污染现象日趋严重。
With the increase in discharging of waste water containing large amount of nitrogen and phosphorus to lakes and rivers, fresh-water pollution has been becoming a more and more serious problem.
随着大量含氮和磷的废水流入湖泊和江河，导致淡水污染现象日趋严重。
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