The field experiment was conducted on the cultivated soil, sand and immature soil by using field wind tunnel.
使用野外风洞作为风蚀研究的试验手段,通过农田土壤、沙及生土的风洞试验研究发现,农田土壤的风蚀量随风速呈指数函数变化,沙及生土的风蚀量随风速呈幂函数变化。
Effect of fertilizer supplying method on yield formation and nitrogen (N) absorption were studied with the Japonica cultivar Zhendao 88 in immature soil in Huaibei.
在淮北生土地区 ,以镇稻 88为试验材料 ,设计不同氮、磷肥处理 ,研究其对该区水稻产量形成、群体动态及氮素吸收的影响。
An experiment was conducted in the seashore region of northern Jiangsu to probe the causality of fertility enhancement of the immature soil formed after land leveling with application of some organic manures such as pig manure,cake manure and straws.
三季种植后 ,土壤有机质净增量与有机质投入量 ,总投氮与土壤全氮、碱解氮 ,总投磷量与土壤速效磷 ,总投钾量与速效钾呈显著正相关 ,肥料投入对生土土壤肥力演变起决定性作用。
Triggering response of winter wheat to nitrogen,phosphorus,and potassium nutrition in raw soil;
生土条件下冬小麦对氮、磷、钾的原始响应
The PS-(F+C) slurry is prepared by mixing PS(Potassium Silicate in optimum modulus) as binding ingredient,fly ash(F) generated from thermal power plant and pulverized native raw soil(C) at the ancient city of Jiaohe as filling substance,and sodium fluosilicate as treatment agent,its initial setting time is obtained and the shrinkage behavior of its concretion is monitored.
以PS为主剂,粉煤灰和交河故城原生土为填充材料,氟硅酸钠为固化剂制得PS-(F+C)浆液,测定浆液的初凝速度,并观测结石体的收缩变形性。
Based on clarifying of land ecological security and taking Hebei Province as the case, this article discusses the methods of security evaluations of land ecology.
以河北省为例,在界定土地生态安全概念的基础上,探讨了土地生态安全评价的方法。
Problems in China's land ecology security in China involve soil erosion, soil pollution, soil desertification, salinization, alkalin-ization, soil depauperization, etc.
我国土地生态安全方面的主要问题有水土流失、土壤污染、土地沙漠化、盐碱化、潜育化、沼泽化、贫瘠化等,围绕这些土地生态问题,我国已经制订了《环境保护法》和《土地管理法》等综合性法律,又制订了有关的专项法规。
Considering the illegibility and uncertainty character of the security evaluation of land ecology,the paper synthetically makes use of entropy and matter-element theory to establish ecological security of land index system and to macroscopically judge the ecological security degree of land of Heilongjing province during 20002006.
土地是我们人类赖以生存和发展的物质基础,土地生态安全关系到我们人类的生存和发展。
Effects of interplantation of Trifolium repens in orchards on soil ecology and apple tree production.;
果园间种白三叶草对土壤生态及果树生产的影响
Effect of two newly developed environmental friendly bast fiber mulching films RC and JC on soil ecology, crop growth and development was systematically studied with field, pot planting, physical and chemical assessment.
本研究采用国内最新研究开发出的环保型麻地膜,以不覆盖和普通塑料地膜为对照,采取田间试验、盆栽试验和室内测定分析相结合的方法,对两种麻地膜(RC和JC)覆盖栽培对土壤生态与作物生长发育的影响进行了初步研究。
sedentary soil
原生土, 原地土壤
a native Frenchman;
土生土长的法国人;
An indigenous plant or animal.
土生土长的植物或动物
We have our native flowers.
我们有土生土长的花儿。
a native-born Scot; a native Scot.
土生土长的苏格兰人；土生土长的苏格兰人。
One that is native or indigenous to an area.
土著者一个地区土生土长的事物或人
they're native born and foreign born;
既有土生土长的也有在国外出生的；
The man is a native New Yorker.
那个男人是土生土长的纽约人。
But can foreign things become native?
但是外来物能变成土生土长的吗？
"Are you a born New Yorker?"
“你是土生土长的纽约人吗？
People come to see the local bird life,
人们来观看南极洲上土生土长的鸟、
a native-born Israeli.
一个土生土长的以色列人。
He was neither born nor reared in Hadleyburg.
他不是在哈德莱堡土生土长的。
He is a countryman born and bred, and he doesn't like big cities.
他在农村土生土长，并不喜欢大都市。
aboriginal inhabitants, plants
土著居民、 土生植物.
rank soil, earth, etc
杂草滋生的土壤、 土地等
growing or living in soil rich in lime.
生长或生活于钙质土壤。
Key words： reinforced concrete、 concrete、 high performance concrete、 cement concrete、 pozzolanic effect、 mass concrete.
关键词：钢筋混凝土、混凝土、性能混凝土、高强混凝土、泥混凝土、生骨料混凝土、体积混凝土。