soil available nitrogen 土壤有效氮 ; 土壤速效氮
content of available nitrogen 速效n含量
rapidly available nitrogen 速效氮
readily available nitrogen 速效氮
available nitrogen content 有效氮含量
available nitrogen fertilizer 速效氮肥
available nitrogen of soil 土壤速效氮
soil available nitrogen content 土壤速效氮含量
The nitrogen mineralization rate, total nitrogen, available nitrogen and phosphatase activity of Hippophae rhamnoides pure stand beyond to others.
沙棘纯林土壤的氮矿化速率、全氮含量、碱解氮含量及磷酸酶活性均大于混交林。
参考来源 - 沙棘人工林衰败原因及其对林地土壤氮矿化速率的影响The contents of available nitrogen and phosphorus in the soils were significantly increased by 99% to 168% and 135% to 249%, and the contents of available potassium were enhanced by a range of 10%-15%.
土壤营养物质循环中,有效氮增加了99%168%,有效磷增加了135%249%,有效钾增加了10%15%。
参考来源 - 水稻根系酚酸类化感物质分泌动态及其对土壤生理生化特性的影响The correlation coefficients(R2) among them is 0.867 and 0.794. During the restoration process,nutrients,especially the soil organic matter,available phosphorus and available nitrogen,concentrated in the surface layer.
同时,相关性分析表明,土壤有机质的变化与全氮、速效氮呈现出显著的相关性,R2为0.867和0794,并且各养分具有明显的表聚性,尤以有机质、速效磷和速效氮表现明显。
参考来源 - 西北干旱区植被恢复的土壤养分效应·2,447,543篇论文数据,部分数据来源于NoteExpress
Contrast to soil available nitrogen, soil total nitrogen was not influenced by the environmental factors.
而优势物种和功能群组成对土壤全氮的影响作用相对较弱。
Soil organic matter, total nitrogen, total phosphorus, available nitrogen had middle spatial correlation patterns.
土壤有机质、全氮、全磷、速效氮具有中等空间自相关性。
Quaternary red clay total nitrogen content was highest, but the available nitrogen content was lower than Granite soil and Purple sandy shale soil.
第四纪红土土壤全氮含量较高,但是其碱解氮含量比花岗岩母质土壤和紫色砂页岩土壤低。
So if we take a look at nitrogen here, what you'll notice is we have thre available for bonding, - and we already have our lone pair -- one of our orbitals is already filled up.
如果我们看一下氮原子,我们注意到我们可以成3个键,我们已经有一个孤对-,其中的一个轨道已经被填满了。
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