农业土壤的

Multi-aim geochemistry agrology survey in deeply overcast areas serves to the evaluation of the agriculture, environment, mineral resources and study of the fundamental geology. In this paper, we discuss emphatically the restrict mechanism between the activation of mineral elements and their contents of CaCO3 and pH, and show the importance of the study of soil pH and CaCO3 for agriculture and environment protection.

深覆盖区多目标地球化学调查，旨在通过土壤地球化学测量，为农业、环境、矿产资源评价及基础地质研究服务，作者重点阐述了土壤pH值、 CaCO3含量与土壤矿质元素活化之间的制约机理，论述深覆盖区多目标地球化学调查要实现服务于农业、服务于生态环境保护的目标，就必须加强对土壤pH值及CaCO3含量调查研究。

In order to simulate the soil waterlogging status, the calculation of capillary rise from the water table and the functions of hydraulic conductivity characteristics were incorporated.

采用盆栽小麦水分试验资料验证了日蒸散量的模拟值，利用湖北荆州农业气象试验站和江苏金坛农业气象试验站的土壤水分历史资料对建立的模型进行了综合测试和验证，结果表明：蒸散量、地下水位和 0～ 5 0cm土壤含水量的模拟值与实测值具有较好的一致性，模型能可靠地预测多雨和渍水地区麦田土壤水分的变化动态

The journal publishes original scientific articles, reviews and short communications dealing with all aspects on production and health in plants and animals, as well as rural development, such as genetics, breeding, organic, biological agriculture and sustainable production systems, apiculture, aquaculture, forages and pastures, plant and animal diseases, pests and weeds, epizootiology, immunology, parasitology, physiology, reproduction, management and food technology, natural and genetic resources, agricultural economics, rural engineering and mechanization, soils, fertilization, irrigation and watering, etc.

杂志刊载原始科学文章，评论和短通讯，内容涉及植物和动物生产和健康，以及农村发展的所有方面，例如遗传学，育种，有机农业，生物学农业和可持续生产系统，养蜂，水产业，草料和牧场，植物和动物疾病，害虫和杂草，动物流行病学，免疫学，寄生虫学，生理学，繁殖，管理和食品技术，自然和遗传资源，农业经济，农村工程和机械化，土壤，施肥，灌溉和浇水等。

The research results will benefit the understanding the effect of intensive agriculture on soil property variability, to realize regional sustainable agricultural development and precision farming.

研究结果为分析集约化农业对土壤性质变异演替的影响规律、实现区域农业可持续发展和精确农业奠定基础。

Floor of entire county total ground accumulates 4885 square kilometer, climate characteristic is spring dry sand blown by wind is much, the summer is short rainfall is little, year average air temperature 2.5 ℃, fall 350mm is controlled, frost-free period is controlled 110 days, it is typical dry farming county, long-term since, because the ploughshare type of follow tradition plows cultivation, a large number of the earth's surface are completely bare, monsoon comes, soil land of medium fine sanded face is reached organic blow character, cause edaphic sand to change, fertility drops, raise of sand and dust, year answer a year, change dene serious with each passing day, cause aggravation of zoology environment year after year, the agriculture that also decided place produces a condition, groundwater source is not worth badly, 10 years of 9 drought, extensive cultivation, crop yield is low and flabby.

全县总土地面积4885平方公里，气候特色为春季干燥风沙多，夏季短促降雨少，年平均气温2.5℃，降水量350mm左右，无霜期110天左右，是典型的旱作农业县，长期以来，由于沿袭传统的铧式犁耕作，大量地表完全裸露，季风来临，将土壤中的细沙面土及有机质刮走，造成土壤沙化、肥力下降，沙尘扬起，年复一年，沙化日趋严重，造成生态环境逐年恶化，也决定了当地的农业生产条件，地下水源严重不足，十年九旱，广种薄收，作物产量低而不稳。

As an important grain production base of North China, Hetao area can provide high-grade farm products. But there are some serious eco-geochemical problems including soil salification, which restricts regional agricultural development, and endemic diseases of arseniasis and fluorosis, which badly affect the human health.

作为我国北方重要的粮食生产基地可以为全国生产出优质的绿色产品；但河套地区也具有比较严重的生态地球化学问题，首先是土壤的盐渍化制约了河套地区农业的发展，其次是全区以砷氟中毒为主的地方病比较严重，极大地影响了该区人民的身体健康。

Being a protective tillage, the no-tillage means getting rid of not only the tillage before sowing, but also the intertill after sowing, and leaving the plant residue after harvesting.

中文题名稻田自然免耕体系土壤微生物及有机质周转研究副题名外文题名 Study on the microbial characteristics and the turnover of organic matter in paddy soil under a long-term no-tillage and ridge culture 论文作者张磊导师谢德体教授魏朝富研究员学科专业土壤学研究领域\研究方向土壤生物和生态学位级别博士学位授予单位西南农业大学学位授予日期2002 论文页码总数92页关键词稻田土壤生态学土壤有机质土壤微生物免耕馆藏号BSLW /2003 /S154 /1 免耕制是一种保护性耕作制，指同一块土壤在一定年限内，不仅免除播前耕作，也免除播后中耕，作物收获后直接将作物残茬留在土壤中的耕作方式。

Kuiper D%Smid A Genetic differentiation and phenotypic in Plantago major ssp major I The effect of differences in level of irradiance on growth,photosynthesis,respiration and chlorophyll content Physiology Plant , 1985,null

赵世杰%刘华山%董新纯植物生理学实验指导北京：中国农业科技出版社， 1998，李新举%张志国%李贻学土壤深度对还田秸秆腐解速度的影响 10.3321/j.issn：0564-3929.2001.01.020 土壤学报， 2001，(01)束怀瑞果树栽培生理学北京：中国农业出版社， 1993，null

The water-saving technologies in field are researched and concerned relatively weak,especially in the water deficit conditions,how to utilize the synthesis effects of water and fertilizer,increase the efficient utilization of soil water in saline soil,which are researched unprofound,the mechanism unclear,cant adapt the time requirements of agricultural water-saving.

田间节水技术的关注与研究相对薄弱，特别是在水分亏缺条件下，如何利用水肥综合效应，提高盐渍化土壤田间水分的高效利用率的研究还不深入，机理不清，不能适应农业节水的时代要求。

In this region there are 14.90millions m 3 agriculture water resources that is 93.35percent of the tote water resources, and there are 6.53 millions m 3 soil water resources that is an important source of recovering and developing ecosystem and agriculture production such as dry-planters, meadows, woodless etc...

其中土壤水资源为6 35亿m3 ，是这一区域旱作农业、草地、林地等农业生产和生态恢复与建设的重要来源。依据该区域水资源现状及开发利用中存在的问题，提出了农业水资源可持续利用的若干对策。

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。