1) Content of rapidly available nitrogen in soil
土壤速效氮含量
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 available nitrogen
土壤速效氮
1.
This study investigated the effect of soil nitrogen regulator on soil available nitrogen.
研究了土壤氮素调理剂对土壤速效氮含量的影响。
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