Affect of Ridge Tilth on Roots Growth of Paddy Planted in Frigid Zone

垄作对寒地水稻根系的影响

The effect of different fertilizer levels on tilth soil salt movement and distribution

不同施肥水平对 耕层土壤盐分迁移和分布的影响

Ecological Water Demand for Prevention of Tilth Salinization in the Main Stream Basin of Tarim River

塔里木河干流流域防治 耕地盐碱化的生态需水量

Effects of different covering materials on tilth soil temperature and maize emergence

不同覆盖材料对 耕层土壤温度及玉米出苗的影响

Tilth 's the quality of a soil which makes it easy to cultivate and easy for the roots of plants to grow .

耕 性 指的是使 土壤易于耕作，根系易于生长的一种土壤性状。

The general amount of soil group in tilth top soil of sugarbeet were higher the stability of every grade soil group was al-so higher .

甜菜 茬 耕层土壤的水稳性团聚体总量较高，各粒级团聚体的稳定性也较高；

The Analysis of the Tilth and Farmland Changes in Jiangbei District Chongqing

重庆市江北区 耕地与基本农田变化分析

And ( 3 ) single application of chemical fertilizers can only maintain the organic contents in the tilth but not raise the level of organic matter contents .

单施化肥只能维持 耕层 土壤有机质含量，但不能提高有机质水平。

A preliminary experiment and analysis of tilth resistance of two-wing types of different sweeps mounted on the same revolving frame were made through modification of moving parameters in this paper .

本文对同一回转刀盘安装不同数量双翼型刀铲的 耕耘阻力，通过改变运动参数进行了初步试验分析。

Series Designing and the Type Chart of Driving Disk-plow ⅰ . Tilth Depth of Driving Disk-plow

驱动式圆盘犁系列设计和型谱&Ⅰ.驱动式圆盘犁的 耕作深度

The effect of raising machine speed upon tilth resist - ance and the ratio of power consumption is the same as that of reducing the revolutionary speed of sweep cylinder .

提高机组速度，则对 耕耘阻力、比功耗的影响与减少刀滚转速趋势一样。

STUDY ON THE MECHANISM OF SOYBEANS FERTILIZING SOIL ⅳ The dynamic effect of soybean on micromorphology of The tilth soil

大豆肥田机制的研究Ⅳ大豆对 耕层土壤微形态的动态影响

Purple soil is one kind of important unirrigated tilth soil in southern China .

紫色土是我国南方重要 旱作土壤之一。

Available P content in tilth layer was mainly influenced by chemical fertilizer ;

耕层 土壤速效P含量主要与化肥施用量 有关；

Soil microbial biomass carbon and nitrogen decreased with tilth depth under the four types tillage . 5 .

不同耕作方式之间微生物生物量碳氮随 耕作深度而减少。

The effect of planting soybean on some physical and chemical characters of tilth soil

大豆对 耕层土壤一些理化性状的影响

Using GIS and database combining the application to establish application system such as tilth estimate system and applying decision system .

利用地理信息系统和基础数据库，结合应用模型，建立 耕地 地力评价系统、施肥决策系统等 测 土 配方 施肥应用系统；

In addition soil organic matter was also the principal factor affecting soil structure tilth function of water the fertilizer and so on .

此外，土壤有机质还对土壤结构、 耕 性、 保水 保肥性能等有重要影响。

So microflora increase tilth .

也就是 说微生物群落 能提高 耕 性。

Tilth of paddy soil and its significance on soil classification

水稻土的 耕 性及其在土壤分类上的意义

The distribution position of cotton root system in the tilth is closely related with cotton yield .

棉花根系在 耕层分布的位置与产量密切相关。

The effect of planting alfalfa on tilth in the water-short degree of local place was also little but planting alfalfa on badlands pricked up the pressure of agriculture water resource it would affect the sustainable development of alfalfa industry and others planting industry .

在 耕地种植苜蓿对当地水资源状况几乎无影响，但利用荒地种植苜蓿加剧了当地水资源紧缺程度，影响苜蓿产业及其它种植业的可持续性发展。

Study on the Root Distribution Properties in Tilth Layer of Winter Wheat Varieties

冬小麦 耕层根 形研究

Although the status of soil available boron and zinc was improved somewhat there are still 2 / 3 of tilth lack of boron and 1 / 3 lack of zinc .

相比于 二十 年 前，土壤缺硼和缺锌的状况虽然有所改变，但仍有2／3的 土壤缺硼、1／2的 土壤缺锌。

The pH values of the tilth fell into the range of 4.5-5.1 . The soil texture except that of the alluvial soils were all clayey with a clay particle content of about 30 % - 45 % .

耕层 土壤多属强酸性，pH多为4.5～5.1；土壤质地偏粘（冲积土除外），粘粒含量达30～45%；

Some of these provide tilth to a soil .

有些 有机 肥是用来 改善土壤的 耕 性的。

The effect of soybean on Micromorphology of the tilth soil

大豆对 耕层土壤微形态的影响

Urban land use potential is a basis for using urban land in reason improving efficiency of urban land use enforcing the tilth protection .

研究城市土地潜力是城市建设者合理利用城市土地、提高城市土地利用效率、保护 耕地的基础。