In anaerobic lowland fields, ammonium (NH₄⁺) is the dominant form of nitrogen (N) taken up by rice plants, however, with the large expansion of water-saving irrigation practices, nitrification is favored during drained periods, leading to an increased availability of nitrate (NO₃⁻).

中文翻译：

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低地水稻叶片气体交换响应氮源和蒸气压不足

在厌氧低地田中，铵态氮（NH ₄ ⁺）是水稻吸收氮（N）的主要形式，但随着节水灌溉措施的大量推广，在排水期间有利于硝化作用，导致硝酸盐（NO ₃ ^-）的可用性。