At the new shoots growth, the nitrogen amount is lower.

新梢开始生长含量较低。

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The root sugar content decreased with the increasing of nitrogen amount, they were negative correlation.

随着施氮量增加，块根含糖率逐渐下降，二者呈显著负相关。

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The field trials were done to study on the effects of nitrogen amount on the yield and nicotine content of sun-cured tobacco.

通过田间试验，研究了不同施氮量对晒烟烟叶产量和烟碱含量的影响。

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"You can work out the budget, and there is a phenomenal amount of nitrogen accumulating somewhere in the basin, " said Professor Tim Burt, also of Durham University.

BBC: Thames archive reveals long nitrate rise

The largest problem is the dangerous amount of nitrogen oxide (which mixes with vehicle-exhaust gas to create ozone, and then smog) coughed out by the state's industrial plants.

ECONOMIST: The Lone Smog State

But if these effects could be managed, then it is not clear that the amount of nitrogen being drawn out of the air would, of itself, be a problem.

ECONOMIST: The global environment