1) nitrogen sources
N素形态
2) N element
N素
1.
The plasticity of clonal architecture of Juema in response to N element was studied.
试验研究N素对蕨麻克隆构型的可塑性反应结果表明,蕨麻基株根长、分枝数、分株数、间隔子、地上干物质量、地下干物质量随N素的增加呈二次曲线变化,在施纯N 90。
3) nitrogen
N素
1.
Study on absorption and utilization of nitrogen in flue-cured tobacco plant from rape straw fertilizer with ~(15)N;
应用~(15)N研究烤烟对秸秆N素的吸收利用
2.
Field studies were conducted to investigate effects of rice straw incorporation and nitrogen application models on process of nitrogen uptake by rice paddy ecosystem and fertilizer-N use efficiency in the double rice cropping system.
采用田间试验研究了稻草还田环境下施N模式对稻田生态系统N素吸收量及N肥利用率的影响。
3.
Soil column leaching experiment,ammonia volatilization experiment and pot experiment were carried out to study the effects of lignin on the nitrogen migration,transformation and accumulation of compound fertilizer coated with lignin in multimedia environment(soil,water,atmosphere and plant).
以木质素包膜复合肥为研究对象,通过淋溶、氨挥发和盆栽试验,系统研究了木质素包膜复合肥中N素在多介质环境(土壤、水体、大气和植物)下的迁移转化和积累,以及木质素对复合肥中N素的影响。
4) urea
N素化肥
5) Taihu lake area
N素淋洗
6) N loss
N素流失
1.
Aiming at the characteristics of water and nutrient management of rice cultivation,a model (precipitation-runoff-N loss simulation model,PRNSM) simulating rainfall-runoff-N-loss from paddy field was established with major parameters specified based on the data of field measurements and from the literature.
针对稻作水肥管理特点,建立了降雨-径流-N素流失模拟模型,根据实测与文献资料确定模型主要参数,并输入1951至2006年56a逐日降水资料运用自编程序进行计算机模拟运算,以分析南京地区降雨量与水田径流量及径流N流失量的关系。
参考词条
补充资料：土壤氮素形态
土壤氮素形态
forms of soil nitrogen
这一比率在90%左右，随着土层深度的加深，比率迅速降低.土城中一部分有机态氮与无机态氮之间主要通过矿化一生物固持作用而相互变化. (朱岁匕良茶贵信)土族氮素形态(forms of 5011 ni‘rogen)土坡中含氮物质的化学结合形式和存在状态，分有机态氮和无机态氮两大类。有机态氮为与碳结合的含氮物质.无机态氮为未与碳结合的含氮物质.有机态氮占土城全氮的比率，主要决定于有机态氮与无机态氮中的粘土矿物固定态按态氮的相对含t，在表层土坡中，
说明：补充资料仅用于学习参考，请勿用于其它任何用途。