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- soil total N 土壤全氮
- Soil total N content 土壤总氮含量
- The soil organic matter and total N stabilize basically, available P increase while alkaline hydrolyze N decrease obviously in the cornrice rotation. 玉米、稻连作土壤有机质和全氮基本稳定，有效磷呈上升趋势，碱解氮和速效钾下降趋势明显。
- Corn economic yield and biological yield were significantly related with soil organic matter, total N, alkali-hydrolyzable N, total P, and availabl P. 玉米产量及生物量与土壤有机质、全氮、碱解氮、全磷、速磷相关性达极显著或显著相关。
- The soil organic matter and total N stabilize basically,available P increase while alkaline hydrolyze N decrease obviously in the cornrice rotation. 玉米、水稻连作土壤有机质和全氮基本稳定，有效磷呈上升趋势，碱解氮和速效钾下降趋势明显。
- N fertilizer application in wheat significantly increased total N, ammonium N and nitrate-N contents in paddy field, resulting in high indigenous N supply of soil (INS). 结果表明，麦季氮肥的施用明显提高了稻季土壤全氮、铵态氮和硝态氮的含量，造成土壤背景氮偏高。
- The amount of nitrogen needed from BNF sources is then, determined by the difference between total N assimilation requirements and N taken up from mineral sources in the soil. 而所需要的来自生物固氮的氮量就由总的氮素吸收需要量和土壤中矿质来源的氮素吸收量的差值来确定。
- The results there are significant positive correlations between soil organic matter, total N, available N, available K, urease, invertase, alkaline-phosphatase and catalase. 结果表明：土壤有机质、全氮、碱解氮、速效钾、脲酶、蔗糖酶、碱性磷酸酶和过氧化氢酶之间均呈极显著正相关；
- Long-term fertilizer application effects soil organic carbon (C), total N and potentially mineralizable N in continuous wheat cropping systems in western Canada. 表6 加拿大西部小麦连作体系中长期施肥对土壤有机碳(C)、全N和潜在可矿化氮的影响 Table 6.
- The results show that soil total P (P T), inorganic P, organic P, Olsen P and Bray P are high in MNPK, 1.5 (MNPK), MNPK (Soybean) and M treatments, followed by NP, PK, NPK, and SNPK treatments, and low in the treatments without P (N, NK and CK 2). 结果表明 :长期施磷 ;特别是磷肥和有机肥配合施用能明显提高土壤全磷 (PT)、无机磷、有机磷、Olsen- P和 Bray- P含量 .
- In the total N absorbed by crops 33.9% was absorbed by wheat and 66.1% by corn. 带田适宜施氮量为385.;5 kg hm-2:在作物总吸收N量中;被小麦吸收的氮占33
- The total N, NAN and microbial N passing the abomasum had increasing trend. 试验期1昼夜通过皱胃的总氮量为14.;27克;非氨氮(NAN)13
- There were positive correlation between SOC and total N, available N and C:N. 苜蓿草地有机碳与全氮、碱解氮及C:N之间均为正相关关系。
- Maize straw returning to the field can increase the soil total nitrogen and inorganic nitrogen content. 秸秆还田增加了土壤全氮和无机氮含量。
- Soil total organic carbon(STOC) under broad-leaved and bamboo forest were considerately higher than (P<0.05)those under masson pine and Chinese fir. 结果表明:土壤总有机碳含量常绿阔叶林和毛竹林显著高于杉木林和马尾松林。
- The content of total N,NH + 4 N and NO - 3 N varied widely with different organs because of the effects of soil water,nutrient content, atmospheric temperature,vegetable feature and selective absorption to nitrogen,etc. 受土壤水分、养分、气温和植物本身特点及其对N素选择吸收作用等多种因素影响 ,小叶樟、毛果苔草和漂筏苔草 3种植物不同器官中‘三氮’含量变化较大 ,NO-3 N比NH+4 N含量稳定且NH+4 N/NO-3 N >1;
- The total N 2O emission from forest ecosystem may be underestimated if plants can emit N 2O under natural condition. 如果树木在自然状态下能排放N2 O ,那么森林生态系统的N2 O排放可能被低估。
- The content of total N and total P in rainfall could be increased by Pinus tabulaeformis and Rhus typhina. 油松、火炬能够增加降雨中总氮、总磷的含量。
- The highest ratio of the fertilizer N to total N in plant was found in rosette stage, and then it declined slowly. 同时，施氮量越多，各个时期各部位和整株中肥料氮的比例越大，且均在团棵期达到最大值；
- The approximate enrichment ratio of OM and total N was lower than the ratio of alkali-hydrolyzable N. 有机质与全氮的富集率基本一致，碱解氮的富集率较高。
