Abstract:In lIuangfuchuan basin,thc climate is arid and precipitation is start0. Its wegetation has been destroyed severely. The desert area of land is increasing gradually year by year, and a large number of land can not be utilized for agriculture and forest as well as animal husbandry, The distribution of skeleton soil, for example,rocky soil and sandy soil, surpasses gp percent of the total area in the region. The physical properties of soil are undersirable, such as, coarse texture and the sand content as high as 70 percent of soil weight, and the smaller total porosity of soil. '1 he physical moisture content in profile means only 5-10 precept by weight. It has the poor permeability for sandy rocky soil and easily forms runoff at the time of ra:nstorm，which can lead to overflow of Huangfuchuan ri}'er and a great deal of sedimcpt will be bumped into the Yellow River by flooding water regions of serious soil sediment. In order to and water loss and the main area.Therefore, it is one of the of forming much and coarseprevent soil from eroding, it is the fundamental measures of controlling soil and water loss in Huangfuchuan basin to strengthen biological mea.sures such as planting tree and grass,

Abstract:The undergrounds of nature and social economy for Tuweihe watershed were deal with in this paper, Meanwhile, the authors analysed the laws and characteristics of soil and water loss and made the study on the regionalization, the morphological,features of desert, the formation causes of wind erosion and desertization，and the ways and intensity of soil erosion, The exploitative way and control measures arrangement of soil and water loss were put forward inorder to supply scientific basis for controlling the tributaries of the sediment rich area with much coarse sand in the contiguous area of Shanxi，Shaanxi and Inner Mongolia,

Abstract:Che structure, functions and characteristics of economic ecosystem in l}}udinghe watershed as well as the deteriorative causes of ecoenvironment have been analysed in this paper, It vvas pointed out that the causes to make heavy economic loss are 'the irrational economic structure and longterm discord of economic system and ecosystem,In. order to transform the ecosystem into a favourable circulation gradually,and to achieve the coordinated development and synchronous improvement of the economic ecosystem，the author put forward the control strategies in Wudinghe watershed,

Abstract:The characteristics of runoff and sediment and their changes in Jinghe watershed.were analysed in detail, According to the basis‘laws of forming runoff and sediment, the hydrological method was used to calculate the benefits of runoff and sedi-ment reduction, It was concluded that durng 1970}1989 the benefits of runoff and sediment reduction account for 7,5 percent and 14,4-。en respectively through the comprehensive control on the watershed, and the influence f runoff and sediment.reduction for 32 percent and 48 percent respectively by the reduced precipitation, C3ood_identity is found between the results of hydrological method and the ones of im plementing the measures of soil and water conservation, After of the sharp reduction of sediment in 1980s, it was indicated thsediment reduction are reduced precipitation, The influences anvaysing the causes at the mayor causes of redued precipitation and comprehensive control on sediment reduceion are respectively,about gg percent and 37 percent

Abstract:Based cn the investigaticn of soil ercsicn by remote sensing and map-making in Northeast China，the types, distribution，intensity=classifing of soil erosion and its features in the regions with different soil- erosive intensity have been dealt with in Songhuajiang valley The harms causing by soil erosion were analysed through surveying the ` typ;ca] 'actual 'example, Ori This basis, the author put forward the measures to con trol soil erosion in this valley,

Abstract:The soil erosion of mountain areas in South China has been one of the most imprortant deteriorative causes of agroecoenvironment, In this paper, the characteristics of soil erosion and its influence on agroecoenvironment in the mountains of East Guangdong province were analysed, i1}Ieanwhile, it was pointed out that the control on soil erosion is the key to improve agroecoenvironment of the mountains, At last, the.author put forward the measures of controlling soil erosion and improving agroeco.environment in the mountains of East Guangdong province.

Abstract:The tea has been cultured in Dabishan mountains of South Henan province for a long time. Tea peasants have got much practical experience and know many cultural technologies about the management of tea plantation and the production of tea, Nevertheless,as the increase in planting area and scarely administration as well as plunder management, some tea plantations have been old before ones time and so have low economical benefits, To solve these problems, the authors have made the study on.benefit experiment and yieldraising technologies of soil and water conservation in tea plantations of slope land, It includes two parts: the biological technologies are used to protect landsides and soil by interplanting green manure; and, the renew tech=nologies of many stripes and close planting, The results show that it has achived remarkable benefits of soil and water conservation, economy and socity to take many stripes and close planting, interplanting green manure for protecting landsides and soil.

Abstract:Baihe county Zs one of the main poor counties in China, The county has been persisting, in building and repairring land for twenty years, so the total area of terraced fields has reached 176.8 thousand mu and reached 0.93 mu per capita, The masses' problems of’ dressing and eating have been basicly solved, According to the investigation of the physical condition and the situation of socity and economy it was pointed that to develop economy in stone landsides, which take the planting white mulberry on landsides as the centre is the most important way for breaking away from poor and getting into basic comforment.

Abstract:Interplanting with Onobrychis Viciaefolia in slope forestland would promot seedling growth, make full use of land and increase the economical return, The ratio of living through the winter by applying artificial three-dimension types can increase 65 percent compared with the ones by level planting, Covering it with soil before winter is the key measure in field management after planted, The rational height to be cut is 5 10 cm.

Abstract:The pot experiments have been carried out to approach the influen:es of soil salt on:growth and productivity of Spring wheat, The ;results are shown as follow; Spring wheat is sensitive to soil salt during seedlings and its ability of saltresistance increases after seedling,Meanwhile, the influences of different manure on Spring wheat are different, Supplying P can enhance larger ability of saltenduring than supplying N and promote the better growth of Spring wheat, Under different condition of soil salt supplying P can develop more functive leaves,result in larger speed of accu-mulating aboveground drymatter and promote the yield more remarkable comparedr with supplying N.

Abstract:The authors reviewed the development, characteristics and problerrls in of soil antierosibility and antiscourability, and pointed out the research in the future,the study directions