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。
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。
The growth of Microcystis aeruginosa (as a sell nutrition plant) had no relation with C resource but had a positive relation with N and P concentration.
而微囊藻作为一种自养的光合植物，其生长与水中的C源无关，与氮磷浓度有关。
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。
Plant absorption was not the main mechanism in reduction of both N and P, due to less plant biomass on wetland buffer zone.
缓冲带内的湿地植物量较小，决定了植物吸收并非氮磷去除的主要机制。
In order to translocate N efficiently within plant and maximize growth, the relationship between nitrogen nutrition and the cost of C, photosynthesis, and water equilibrium were discussed.
讨论了植物的氮（N）素营养过程与C的消耗关系、光合作用与N投入的关系、水分平衡与植物的N素营养的关系。
The plant residue with more lignin has a higher humification coefficient. As the residue containing more N is more favorable to the formation of soil microaggregate.
其中含木素较多的植物残体，表现为腐殖化系数较高，含氮多的植物残体，则有利于土壤微团聚体的形成。
In upper of the medium, the element accumulation of n, Ca, Mg, cu, Fe and Mn may be harmful to the plant.
试验显示营养液中的氮和钙、镁、铜、铁、锰等元素在基质上部富集，可产生肥料盐害。
The growth and development, yield and quality, photosynthetic assimilation, and structure of Chieh-qua were affected by extraneous factors such as n, p, K nutrition and plant growth regulator.
营养和外源生长调节剂等外界环境因素对节瓜的生长发育、产量品质、光合同化及其解剖结构均有一定的影响。
Soil microbial biomass C, N declined significantly in early restoration stage compared with shrub communities, and increased with the extension of plant restoration.
土壤微生物生物量C、N在植被恢复的初期显著低于灌丛，而后随着恢复的进行逐步增长。
N-banded barley chromosomes were analyzed by both chromosome image analyzing system (CHIAS) and traditional method. CHIAS is a computer system especially for plant chromosomes.
本文用染色体图象分析系统对大麦n带染色体进行分析，同时用传统的人工方法分析，并将二者进行比较。
An optimum plan of raising removabilities of N and P, suitable to Song-Jiang Sewage Disposal Plant, has been suggested.
并对三个方法进行了比较，推荐了适合松江污水厂提高氮磷去除率的最佳方案。
Mathematic models between yield and N fertilizer and plant density for two peanut variety types were set up by using quadratic saturation D-optimization design under single-seed planting.
采用二次饱和D—最优设计建立了精播条件下不同类型花生品种N肥用量和密度与产量的数学模型，探讨肥料与密度的产量效应及优化配置。
At the mean time, D fertilizer particle microcapsules were made with higher content of K but median content of N to meet the demands of tobacco plant at middle and later stage and promote maturity.
同时，为满足烟株中后期的养分需求及促进成熟落黄，制作重钾适氮的缓释肥包膜D粒子。
Undigested dewatered domestic sewage sludge from secondary treatment plant contained N 4.12%, of which organic form of N accounted for 93%.
未经消化的二级生活污水处理厂脱水污泥含氮4.12%，其中有机态氮占93%。
The removal efficiency of nitrogen (N) and phosphorus (P) from three kinds of eutrophicated water by terraneous ornamental foliage plant-beet on floating-beds was researched under low temperature.
以陆生观叶植物红叶甜菜为材料研究其对不同富营养化水体氮磷的去除。
An optimum regression design with three factors and five levels was adopted to find the effects of n, K and s fertilizers on the yield of Chinese cabbage and the nitrate content in its plant.
采用三因素五水平最优回归设计，研究了黄泥土配施氮钾硫肥对大白菜产量和硝酸盐含量的影响。
N competition between barley and pea was positively correlated with N use efficiency in the intercropping plant population.
大麦相对于豌豆的氮素竞争比率与间作群体氮肥利用率呈显著正相关关系。
Because the use of n, p, and K can decrease the root rot disease index of pea, more plant ash and compost contained abundant available K must be used.
由于氮、磷、钾配施能减轻豌豆根腐病危害，所以目前应多施草木灰、堆肥等富含速效钾的肥料。
The results of 15N tracing showed that the fertilizer-N uptake in rice plant and grain of two varieties increased with the advance of growth stage.
示踪结果显示，两个品种水稻植株和籽粒吸收肥料氮，都随着生育期的推移而逐渐增加。
There are obvious mutuality in the plant biomass, grain N content, Total amount of N absorption with yield, grain N content have maximal immediate effect to yield.
植株干重、子粒氮含量、总吸氮量与产量显著相关，子粒氮含量对产量的直接影响最大。
The amount of demand for N, P and K, especially the ratios of P and K requirement of super high yielding japonica hybrid rice plant were higher than those of high yielding rice.
在养分积累、分配与利用上，超高产条件下，稻株对N、P、K三要素的吸收量增加，特别是P、K的吸收量增加明显；
CGO were hydrotreated by RN 2 catalyst to remove N and S impurities and improve the quality. The hydrotreated CGO was proposed to be mixed with VGO as FCC feedstock after testing in the pilot plant.
采用脱氮活性高的RN-2催化剂对管输油的焦化蜡油进行加氢处理，脱除其中的氮、硫等杂质及改善烃类组成后，进行催化裂化或与直馏蜡油混合作催化裂化进料。
Shocking effect and analysis for NH3-N to wastewater treatment plant, Drawing out countermeasure.
分析了氨氮对污水场的冲击影响，并提出对策。
The main results were as follows:1. N, K affected pumpkin's growth. In a certain range, plant growth increased when the quantity of fertilizer increased.
在一定的范围内，随氮、钾肥料施用量的增加，西葫芦植株的株高、茎粗及根、茎、叶的鲜重均增加。
The Pavlovsk Experimental Station is part of the N. I. Vavilov Institute of Plant Industry.
巴甫洛夫斯克试验站是瓦维洛夫植物行业研究所的一部分。
The Pavlovsk Experimental Station is part of the N. I. Vavilov Institute of Plant Industry.
巴甫洛夫斯克试验站是瓦维洛夫植物行业研究所的一部分。
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