nitrogen chemistry 中文意思是什麼
nitrogen chemistry
解釋
氮化學-
They are jinfo mountain in nanchuan county ( natural protection section ), wuling mountain in qianjiang county ( national emphases forest demonstration county which forest cover rate is beyond 50 % ) and zhongliang mountain in beibei county ( artificial destruction is very grave ). some main land use patterns i. e. woodland, garden, infield, abandon infield, shrub and grassplot are selected in those three sample sites. four aspects on soil fertility index of karst environment under different land use patterns in these three sample sites, are revealed in this paper, by using the field test, indoor measure and analysis, outdoor experiment and field investigation, and the knowledge and technique of soil, ecology, physics and chemistry etc. they are physical characteristic ( effective soil thickness, organic layer thickness, soil texture, water - stable aggregate and soil water etc. ), chemical fertility ( organism, omni - n, omni - p, omni - k, alkali - nitrogen, available p, available k and rapid available k etc. ), soil animalcule ( bacteria, fungi, actinomyces and their grosses ) and soil - seed - pool ( plant community diversity index ) in karst ecosystem
本研究以重慶市的南川金佛山（自然保護區） 、黔江武陵山（國家重點退耕還林示範縣，森林覆蓋率50以上）和北碚中梁山（遭人為破壞嚴重）典型巖溶區為對象，選擇了幾種重要的利用方式，包括林地、果園、耕地、棄耕地和灌草坡，採用野外巖溶生態調查和室內試驗測量分析相結合的方法，以不同土地利用方式巖溶土壤肥力為重點，對不同土地利用方式土壤肥力特徵進行量化分析，找出巖溶土壤肥力差異的主要方面及其根本原因，論文主要從土壤剖面物理退化指標（有效土層厚度、有機質層厚度、質地、團聚體、水分含量等） ，化學肥力退化指標（有機質、全n 、全p 、全k 、堿解n 、速效p和速效k等） ，樣地土壤微生物指標（細菌、真菌、放線菌數量及總量）以及樣地土壤種子庫植物群落多樣性等4個方面對重慶典型巖溶區的土壤肥力特徵進行了較為詳細的分析研究，為巖溶地區士壤資源的合理利用及結構的調控管理提供依據。 -
The effect of oxygen on nitridation of silicon by nitrogen is discussed in the theory of physical chemistry
從理論上詳細地分析了二氧化硅氮化與矽片氮化的關系和氧分在氮化過程中對氮化的影響。 -
At same time macroscopical and microcosmic mathematical model of nitridation are investigated. in this paper the thermodynamics of direct - nitridation, effect of temperature and nitrogen ambience on nitridaton and self - diffusion are discussed in the theory of physical chemistry in detail
同時本文用物理化學的原理討論了矽片氮氣直接氮化的熱力學方程、氮化條件的理論根據和原子的自擴散，從理論上證明隨溫度升高氮化加劇，氣氛純度越高氮化越容易的結論。 -
With the construction of geographically referenced database based on second national soil general survey materials, including the data of soil profiles physical chemistry property, soil profiles depth, soil nitrogen content, soil bulk density, and the support of geographic information system, this paper systematically quantified the soil nitrogen pool
本文以中國陸地生態系統中的土壤為研究對象，以中國較完善和精確的第二次土壤普查統計資料為基礎，在地理信息系統（ gis ）的支持下，對土壤剖面資料進行空間化，初步建立了土壤剖面數據庫。
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