1) form of nitrogen leached
淋失氮素的形态
2) nitrogen leaching
氮素淋失
1.
Experiment on the nitrogen leaching in the drainage condition of rice field in Ningxia Yinnan irrigation region;
宁夏银南灌区稻田控制排水条件下氮素淋失的研究
2.
In an undisturbed column experiment,the nitrogen leaching losses in the powder soil and blue clayey paddy soil was studied by applied urea with new nitrification inhibitor 3,4-dimethyl pyrazole phosphate(DMPP).
采用小粉土和青紫泥原状土柱种植青菜,研究了尿素添加DM PP(3,4-二甲基吡啶磷酸盐)硝化抑制剂对土壤氮素淋失的影响。
3.
The advances in the researches on nitrogen leaching from vegetable soils, and effects of the leaching on underground water are reviewed in this paper.
从菜田中硝态氮的动态变化、土壤氮素的矿化、硝态氮对地下水的影响等几方面概述了近年来国内外的研究进展,介绍了渗漏测定计法、土壤溶液提取器和15N同位素示踪技术等3种测定土壤氮素淋失的研究方法其应用前景;论述了影响菜田土壤氮素淋失的主要因素和降低菜田土壤氮素淋失的主要调控措施;提出了今后菜田土壤氮素淋失应加强的研究方向。
3) nitrogen leaching loss
氮素淋失
1.
The result shows that the change of nitrogen leaching loss was in the form of wave,and presented 4 times washing peaks on the 10th day,40 days,90 days and about 110 days after transplanting during rape growing season.
结果表明,油菜生长期间氮素的渗漏淋失呈波浪式的变化,在移栽后的第10天、40天、90天和110天左右出现了4次淋洗峰;油菜季各处理氮素淋失总量变动在1。
4) Nitrate leaching
硝态氮淋失
1.
The water and nitrogen applications are the two main factors that affect the nitrate leaching on farmland.
供水量和氮肥施用量是影响农田硝态氮淋失的主要因素。
2.
Nitrate leaching from ago-ecosystem is an important contributor of nitrate contamination of water resources,which has been extensively concerned by researchers of home and abroad for the recent decade.
利用大型原状土柱系统(黄棕壤)研究了武汉城郊菜地系统硝态氮淋失规律。
6) Nitrogen form
氮素形态
1.
Effects of nitrogen form and rate on nitrate and nitrite content in flue-cured tobacco;
不同氮素形态和用量对烤烟硝酸盐和亚硝酸盐含量的影响
2.
Effects of nitrogen form and baking on tobacco-specific nitrosmaines (TSNA) and precursor;
氮素形态和烘烤处理对烟草特有亚硝胺及其前体物的影响
3.
Effects of nitrogen forms and solution concentration on growth of Limonium bicolor L.;
氮素形态和营养液浓度对二色补血草生长的影响
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。
参考词条