1) soil Nmin content
土壤无机氮含量
1.
A two-year field experiment was conducted to study the effects of two types of nitrogen fertilizers (urea; coated urea, CU) on maize yield, water use efficiency (WUE), nitrogen use efficiency (NUE) and dynamics of soil Nmin content (DSNC) in 2004 and 2005.
通过连续2a的大田试验,比较研究了尿素与包膜尿素对夏播玉米郑单958和农大108产量、水分利用效率(WUE)、氮肥利用率(NUE)与土壤无机氮动态的影响,结果表明:产量与WUE随施氮量增大而增大,两种氮肥间差异不显著;包膜尿素NUE较尿素高,2004年郑单958N90kg/hm2与农大108N180kg/hm2条件下提高显著;施氮对土壤无机氮动态的影响具有年际间差异:2004年不施氮条件下一般呈"V"型变化趋势,施氮使其向"N"型或倒"V"型转变,而2005年施氮与不施氮条件下均呈"N"型变化趋势;施氮使土壤无机氮含量明显提高,包膜尿素较尿素效果更明显;土壤无机氮含量,包膜尿素处理以表土层最高,而尿素处理,特别是尿素N180kg/hm2处理9叶展至吐丝期以下层土壤较高,2004年表现尤为明显。
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 inorganic nitrogen
土壤无机氮
1.
Effects of nitrogen application rate on soil inorganic nitrogen distribution,microbial biomass nitrogen content and yield of wheat;
施氮量对土壤无机氮分布和微生物量氮含量及小麦产量的影响
2.
Dynamics of soil inorganic nitrogen and its net mineralized amount affected by nitrogen application timing during maize season;
施氮期对夏玉米土壤无机氮变化及净矿化量的影响
3.
Based on field fertilizer experiment of cotton under drip irrigation in the area,cotton nitrogen diagnosis and nitrogen fertilizer recommendation with soil inorganic nitrogen quick test was st.
在南疆滴灌条件下进行氮肥大田试验,对应用土壤无机氮测试进行棉花氮素营养诊断及氮肥推荐进行了研究。
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：土壤无机胶体(soil inorganic colloid)
分子式：
CAS号：
性质：又称土壤无机胶体(soil inorganic colloid)。主要是土壤黏粒。包括母质中矿物的残体及其风化产物。主要由硅酸盐和氧化物组成。硅酸盐有水云母、蒙脱石、蛭石、高岭石和间层矿物、夹层矿物等。氧化物有水铝英石和铁、铝、锰、硅、钛等的氧化物及其水合物。
CAS号：
性质：又称土壤无机胶体(soil inorganic colloid)。主要是土壤黏粒。包括母质中矿物的残体及其风化产物。主要由硅酸盐和氧化物组成。硅酸盐有水云母、蒙脱石、蛭石、高岭石和间层矿物、夹层矿物等。氧化物有水铝英石和铁、铝、锰、硅、钛等的氧化物及其水合物。
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