The effect of different N fertilizer forms on plant iron nutrition and the role of iron in plant N metabolism were studied under nutrient condition.

水培条件下研究了不同形态氮素对植物铁素营养的影响，以及铁对植物氮素代谢的影响。

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We reach these conclusions:The plant is very important in constructed wetland , and it also have the ability of N , P removal .

本研究主要得出如下结论：植物在人工湿地系统中有着重要的作用，具有一定的去除氮、磷的能力。

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Plant growth should be expected to be limited by nitrogen (n) and phosphorus (p) availability in most terrestrial ecosystems.

陆地生态系统植物的生长受到营养元素氮(N)和磷(P)的可利用性的限制。

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The Pavlovsk Experimental Station is part of the N.I.Vavilov Institute of Plant Industry.

VOA: special.2010.08.24

Tynnodd yr aelod Llafur Christine Chapman sylw at y gostyngiad yn nifer y plant sy'n chwarae tu fas a galwodd ar y llywodraeth i wneud mwy i wneud i rieni deimlo ei bod hi'n ddiogel i adael eu plant i fynd allan i chwarae.

BBC: Datganiad ar blant egn?ol

Prif ffocws y rhaglen yw cynyddu nifer y plant sy'n cael eu dysgu'n dda am y tro cyntaf, ac i leihau'r nifer sydd angen cefnogaeth uniongyrchol.

BBC: Datganiad ar lythrennedd

Masada, also part-owned by cable pioneer Daryl Harms, has six patents and a contract to operate a plant in Middletown, N.

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