1) soil C and N content
土壤碳氮含量
1.
In order to explore management approach for sustainable development of soil quality, we study the effect of land degradation on soil C and N content, examine the relative influence of various rehabilitation practices (three seeding treatment and a non-seeded natural recovery treatment) on soil C and N content in early secondary succession.
针对我国青藏高原草地大面积退化及由此引发的一系列生态环境问题,从土壤生态功能恢复和区域可持续发展的角度出发,将原生高寒嵩草草甸封育系统作为对照,研究了土地退化对土壤碳氮含量的影响,检验了不同人工重建措施(3个人工种植处理:混播、松耙单播、翻耕单播和1个自然恢复处理)对土壤碳含量的相对影响程度。
2) the soil N content
土壤含氮量
1.
The relationship among rainfall,the soil N content in the watershed and N pollutant load at the exit of the watershed was analyzed by mathematic model in the paper,using the soil N moving law in order to reveal the mechanism how N pollution works.
然后以管河流域为例,分析得出以下2条规律:在汛期随着流域土壤含氮量的增加,流域出口氮污染负荷增加;随着降雨量增加,流域出口氮污染负荷也增加。
3) soil nitrogen content
土壤氮含量
1.
A pot experiment was conducted to study the effects of different thiourea on the growth, content of photosynthetic pigments and nitrate accumulation of the spinach and soil nitrogen content.
采用盆栽法,研究了硫脲不同用量(0%、1%、3%、5%、7%)对菠菜生长、叶绿体色素含量、硝酸盐累积及土壤氮含量的影响。
2.
Rich nutrients were accumulated in Alnus nepalensis forest land,and the soil ecological environment were good,namely soil nitrogen content and enzyme activity were greater than other land utilization types;(2) Under all kinds of land utilization types,the higher is the soil nitrogen content,the greater is the enzyme activity.
通过对地处澜沧江上游滇西北山区大理洱源县炼铁乡的6种不同土地利用类型土壤氮含量与土壤酶活性变化进行分析,探讨他们的变化及其相互关系,为退化山地土壤的恢复与可持续利用提供理论依据。
4) soil carbon content
土壤碳含量
5) soil NO-3-N content
土壤硝态氮含量
1.
The effects of irrigation amount on grain quality,yield and soil NO-3-N content were studied with strong gluten wheat "Jimai 20" and middle gluten wheat "Taishan 23" by setting four irrigation amount treatments(with 0 mm,180 mm,240 mm,300 mm irrigation amount respectively) under field condition.
选用强筋小麦济麦20和中筋小麦泰山23两个品种,在大田条件下设置不灌水(0 mm)、灌水180 mm,240mm和300 mm 4个处理,研究了灌水量对籽粒品质和产量及土壤硝态氮含量的影响。
补充资料：土壤水分运动基本方程(见土壤水运动)
土壤水分运动基本方程(见土壤水运动)
turang shuifen yundong iiben土壤水分运动基本方程fangeheng见土壤水运动。
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