In nitrate fertilizer sources, the contents of nitrogen and nitrate in maize were highest.

而以硝态氮肥为氮源时，玉米叶片硝态氮含量和全氮含量最高。

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He says farmers may be able to better control the amount of nitrate fertilizer they put on fields.

他说，农民们也许能够更好地控制他们投放到田地里的氮肥总量。

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He says farmers may be able to better control the amount of nitrate fertilizer they put on fields.

他说，农民也许能够更好的控投放到田地里的氮肥总量。

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Mokhtar Ben Nasr on Tuesday, adding that in the past week, four bombs made of ammonium nitrate fertilizer had wounded 16 soldiers and police, including two who lost legs and two who lost eyes.

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Ammonium nitrate, a solid fertilizer composed of ammonia and nitrogen, is also a component of explosives widely used in mining.

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Common fertilizer, or ammonium nitrate, which was used in the Oklahoma City bombing, is much harder to regulate.

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