Corn is one of the best indicators for nitrogen deficiency among the field-crop plants.
玉米是大多数大田作物中缺氮的最好的指示植物。
In some plants, a mild nitrogen deficiency at certain stages of development may be desirable.
许多植物中，轻度缺氮在其发育的某些阶段可能是适宜的。
From the investigations, lack of nitrogen and phosphorus, oxygen deficiency in aeration basin of SBR, high concentration of sulfide in the wastewater is found.
调查分析得知该厂印染废水存在氮、磷缺乏现象，SBR曝气池存在缺氧现象，废水中硫化物含量较高。
S deficiency can increase the content of ureides and nitrate nitrogen of organs.
缺（低）硫处理器官酰脲与硝态氮增加。
S deficiency can increase the content of ureides and nitrate nitrogen of organs.
缺（低）硫处理器官酰脲与硝态氮增加。
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