农业土壤的

This paper analyses and calculates the plow parameters about two kinds of high speed plows LEMKEN and KUHN, and studys the relation between the geometric parameters of shape of moldboard plow surface and soil properties, plowing quality, forces properties, plowing speed, resistance and energy dissipation during the plowing. Then according to the direction of developing high efficiency and saving-energy agriculture, under the premise of good farming quality this article puts forward a kind of method setting the mathematics model about plow resistance through the new cultivation principle and the new design principle.

本文通过对比分析的手段对LEMKEN和KUHN两种高速犁参数两种犁体曲面参数进行量化分析计算，分析犁体曲面形状的几何参数与耕后质量、土壤的力学特性、耕速、阻力和功率消耗等相关关系，结合目前高效节能型农业的发展方向，提出在保证作业质量的前提下，应用新型耕作理论和新型设计理论建立牵引阻力数学模型。

It is necessary to study the rapid soil nutrient measuring methods and apparatus for the development of precise agriculture.

快速测定土壤养分含量的方法和检测仪器的研制，已成为精确农业发展的必需。

It is pointed out that the introduction of agrobiological environmental engineering means into phytoremediation greatly improved the relative efficiency.

介绍了植物修复技术的概念、内涵、研究方法等，探讨了植物修复技术的优缺点和控制因素，指出农业生物环境工程手段的引进将有可能大幅度提高植物修复污染土壤的相对效率。

Soil fertility distribution, alkalic salt characteristic property, water ratio and the temperature change etc, that is farmland information main part is composed of a part, it is also basic meticulous agriculture decision analysis basis at the same time.

土壤的肥力分布、盐碱特性、含水率和温度变化等等，是农田信息的主要组成部分，同时它也是精细农业决策分析的根本依据。

System differentiation of vascular bundles and the relationship between agronomic characters and the system itself of four types of rice were studied under the cultivating conditions of different edaphic miosture.

在土壤水分含量不同的栽培条件下对4种类型稻的维管束系统分化结果和维管束系统与农业性状的关系进行研究。

On the other hand, these activities control the amout and quality of freshwater, for example, water used for agricultrue and industry increase, build up reservoir and unloading directly change the balance of the ecological eviromental composition such as salinity, sand, nutrious and microelement in soil, so that control the change of heteroptera Kitog.

人类活动一方面通过建设虾池、大坝及油井平台等活动直接占用了碱蓬生长的土地，另一方面它又通过控制上游淡水的水量与水质，如农业与工业用水的增加、建水库、直接排污等活动改变着区域土壤的盐度、泥沙成分、营养物质、微量元素等生境组分的平衡，进而控制碱蓬的消长。

Because nitrogen oxides were already present on early Earth, our finding opens up the possibility that oxygen was available to microbial metabolism before the evolution of oxygenic photosynthesis.

同时，由于亚硝酸盐通过化肥的使用而在淡水农业土壤中大量存在，新的研究结果也可为肥料在甲烷循环中的利用提供契机。生物谷 Bioon.com

The fields of application of calcined FGD gypsum were gypsum wallboard,building plasters,self-leveling floor plaster,etc;The fields of application of uncalcined FGD-gypsum were cement, agricultural soil amendment, etc.

经煅烧的脱硫石膏的应用领域主要有：石膏墙板、建筑灰泥、自流平地板灰泥等；未经煅烧的脱硫石膏的应用领域主要有：水泥、农业土壤改良等。

The new soil fumigants will focus on the developent with their safeties,effective,no pollution and easy to use to...

今后土壤消毒剂的开发应朝着安全、高效、环境友好、使用方便的方向发展，以适应不同农业种植的各种要求。

It revealed that the pre-Inca civilisation living here before carried out vast modifications to the landscape, and developed an agricultural system that coped with environmental challenges while improving soil fertility and productivity.

研究表明古代印加人曾经对地表进行了巨大的改变，并且开发出了一种农业系统来应对环境的恶化，而且能增加土壤的肥沃程度和产量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。