查询词典 meadow brown

Sorption of pb2+ on meadow brown soil in northeast of China were studied, and the sorption mechanism was discussed.

研究了重金属铅(Pb2+)在东北草甸棕壤上的吸附行为，探讨了吸附机理。

Sorption of Pb(superscript 2+) on meadow brown soil in northeast of China were studied, and the sorption mechanism was discussed.

研究了重金属铅Pb(上标 2+在东北草甸棕壤上的吸附行为，探讨了吸附机理。

Relationships of dose-response for cytochrome P450 contents in wheat and phenanthrene concentrations were conducted in meadow brown soil.

在此基础上，以草甸棕壤为供试土壤，菲为外源污染物，进行了菲污染暴露与P450含量的污染诱导量-效关系研究。

Acute and sub-acute lethal effects of single and combined Cu,Zn,Pb and Cd on earthworm was determined using meadow brown soil.

测定了草甸棕壤条件下，Cu、Zn、Pb、Cd单一/复合污染对蚯蚓的急性致死及亚致死效应。

The effects of different lead concentration in meadow brown earth, red earth and gray limestone soil on wetland rice growth and its uptake of lead were investigated. The results showed that all treatments did not significantly change the biomass of wet...

水稻吸收的Pb与土壤中的添加Pb、总量Pb和DTPA可提取Pb含量之间均有着极显著的相关性，并由此计算了Pb的表观临界含量，其中湖北土对Pb的污染十分敏感(表观临界含量为79mgPb·kg-1)。

By applying labeled urea into a loamy meadow brown soil, a pot experiment with spring wheat as test crop was carried out.

运用15N尿素示踪技术，以壤质草甸棕壤和春小麦分别作供试土壤和作物进行盆栽试验。

The point of zero net charge for the meadow brown soil in northeast of China with structural negative charges was measured by three methods: potentiometric titration, mass titration and inert electrolyte titration, showing that for the meadow brown soil which possesses structural negative charges, a PZNC independent of electrolyte concentration exists, and the values of pHPZNC obtained by the above three methods are 2.9, 5.0 and 3.3, respectively.

分别采用电势滴定法，质量滴定法和惰性电解质滴定法测定了荷结构负电荷的东北草甸棕壤的零净电荷点，研究表明荷结构负电荷的土壤依然存在与电解质浓度无关的零净电荷点，三种方法的实验结果分别为2.9， 5.0和3.3。

In this paper,the geographical distribution,profile shape and char- acteristics of major soil types such as the young brown earth,brown earth and meadow brown earth in the eastern low-mountain and hilly region and the meadow soil,saline meadow soil and paddy soil in the western plain region in Haicheng county of Liaoning Province are diseribed;the primary physico-chemical properties,organic matter,total nitrogen,total phosphorus,total potassium,total exchange of positive ions,the content of.01 physical cl...

本文叙述了海城县东部低山丘陵区的棕壤性土、棕壤、潮棕壤和西部平原区的草甸土、盐化草甸土及水稻土等主要土壤类型的地理分布、特性、剖面性态；论述了这些土壤类型的主要理化性质，有机质、全氮、全硷、全钾、阳离子代换量、。01物理性粘粒含量等及微量元素的含量、丰缺程度。根据主要土壤类型的性质和特点，作者提出了棕壤、草甸土两大土类的合理利用意见及其改良措施。

The eco-toxicity of Cu, Zn, Pb, and Cd in the single form was tested with four types of soils( red loam soils, meadow brown soils, chestnut soils, and dark brown soik) and their combined effect was determined with meadow brown soils.

测定了4种土壤(红壤、草甸棕壤、暗棕壤和栗钙土)条件下，Cu、Zn、Pb和Cd单一污染对小麦种子发芽与根伸长抑制率及其复合污染效应结果表明，同一浓度下，重金属对小麦根伸长抑制率均明显大于对种子发芽抑制率。

In this thesis, seed germination and root elongation test, early growth test were performanced by chemical spiked (Cu, Zn, Pb and Cd; Phenanthrenen, Pyrene; and1, 2, 4-trichlorobenzene) in four types of soils (red load soil, meadow brown soil, chestnut soil and dark brown soil) using wheat, Chinese cabbages , tomatoes , turnip and scallion as plants: The toxicity of heavy metals Cu.

本文选择4类典型土壤（红壤、草甸棕壤、暗棕壤和栗钙土），以（小麦、白菜、萝卜、西红柿、大葱）为供试植物，进行了重金属（Cu、Zn、Pb、Cd）、有机氯、多环芳烃污染的植物种子发芽与根伸长抑制试验；植物早期生长试验研究；以草甸棕壤为供试土壤，进行了重金属（Cu、Zn、Pb、Cd）单一、复合污染条件下的蚯蚓急性毒性实验；以草甸棕壤、污染土壤和生物修复土壤进行蚕豆根尖实验和土壤原生动物实验。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。