耕地的

Their indiscriminate digging of arable land for thousands of years in the clay brick-making in the production mode, and the use of local piling up Meigandan brick-making, saving a lot of farmland; Meigandan hypergolic use heat generated from the sinter completed Meigandan process saving a lot of energy; Use of the process used to bake the residual heat for drying of repression to the germ, settled weather brought drying bricks, cool bricks difficulties.

他们突破了千百年来滥挖耕地用粘土制砖的生产方式，利用当地堆积如山的煤矸石制砖，节约了大量耕地；利用煤矸石自燃产生的热量完成了煤矸石转的烧结过程，节约了大量能源；利用烧制过程中产生的余热对压制的转胚进行烘干，解决了因天气影响带来的晒砖、凉砖的困难。

The result indicated that suitable thickness of paddy soil is about 15cm,and for dry arable land it should not be lower than 20cm;The alluvial rivers parent material is the best one to influent the output,the rice fields is the worst with the parent material of slate ground,while the dry and plough land is the worst for its purple sand shale parent material;The paddy rice is best with the acid soil,and the dry crop is the best with the neutral soil;The obstacles horizon exist in 35.2%of the rice fields in research region,and many for middle or top digit obstacles.

结果表明，水稻土的适宜耕层厚度为15 cm左右，旱耕地适宜耕层厚度应不低于20cm；成土母质对产量的影响以河湖沉积物母质最好，稻田以板页岩母质最差，旱耕地以紫色砂页岩母质最差；水稻以酸性土最好，旱作以中性土最好；研究区稻田有35.2%的存在障碍层，且多为中、高位障碍，是影响水稻产量整体提高的主要因素；水稻和旱作都以壤土为最好，其中，稻作怕砂，旱作怕粘；水稻土适宜的容重为1.00—1.29 g/cm~3。

Using agriculture production fuction,this paper comes to the conclusion: assuming the same for all the other factors,the more efficiently the farmers work,the more land they want to rent,vice verse.

本文利用同样家庭板块数据的农业生产函数证明，假如其他因素完全一样，务农效率最高的农户租种更多的耕地，而效率较低的农户会出租更多的耕地。

For the purpose of environment protection and reasonable development of scale breeding, Juchao District in Anhui Province, which is situated by the middle of Chaohu Basin, was taken to be studied. The maximum waste load of farmland was estimated through the breeding numbers and respective excretive coefficients. By comparing the actual load of livestock manure with the maximum admissible load, environmental risk of actual breeding scale in each community was evaluated.

以巢湖流域内的安徽省居巢区作为研究区域，结合当地规模化养殖小区的畜禽饲养量、排污量以及有效耕地面积，对畜禽粪便的耕地最大污染负荷量进行了估算，并与当地畜禽粪便的实际负荷量进行比较，对现有养殖规模条件下的环境风险进行了评价。

The result of GPR investigation in west Jilin shows that the radar waveform of saline-alkali soil is different from that of tillable soil, and this can be used to distinguish tillable soil from saline-alkali soil. The extent of salinization can be determined according to the relativity of spectra.

吉林西部盐碱地区的探地雷达调查表明，盐碱地与耕地土的雷达回波具有明显差别，根据振幅的衰减特征可以精确区分耕地与盐碱地，根据频谱中高频峰值与土壤有机质含量的相关性可定性评价土壤的盐碱化程度。

Through consolidating the lands rationally and scientifically, the effective areas of cultivated lands can be obviously increased, and the qualities of the lands can be improved. The method can accelerate the land use at the level of intensivism, and realize the dynamic equilibrium of total cultivated land at last. Simultaneously, the method also can relieve the contradictions between people and lands, and improve the conditions of agricultural production and ecological environment. It can ensure the sustainable use of land recourses and make a full satisfaction for the demanding of land recourses on the social and economic development

同时对我国当前农村土地开发整理的模式进行了论证，通过对土地科学合理的整理，不但能增加有效耕地面积，提高土地质量，促进土地集约利用，实现耕地总量动态平衡，同时还可以缓解人地矛盾，改善农业生产条件与生态环境，保证土地资源的持续利用，满足社会经济发展对土地资源的需求。

Arable land resource is the carrier of agricultural comprehensive production capacity. Considering the consistent development of agriculture and final factor of food security, the guarantying capacity of agricultural produce by arable land resource must be advanced to solve the problem of farm produce supply, especially food.

耕地资源是农业综合生产能力的载体，从农业可持续发展的角度和决定粮食安全的根本性因素看，要解决农产品的供给问题，必须提高耕地资源对农业生产的保障能力。

We used GIS got sum planting area, used GVG got crop planting index.

在本次研究中，我们利用3S技术，选择合适的TM遥感数字图像，建立了目视解译标志，在高性能计算机平台上经人机交互解译，应用GIS软件提取耕地总面积，由GVG软件获得作物种植面积指数，应用耕地总面积种植指数完成各个不同作物的种植面积的提取，取得了满意的结果。

The paper analyses the meaning, feature, and the function of land trust protection from the trust basic principles.

1论文首先将我国现有的土地管理模式归纳为以耕地保护为核心的政策保护，并利用系统理论、委托代理理论和公共管理理论等从几个方面分析了这种模式的弊端和不足，指出了现有的以耕地保护为核心的政策保护模式需要社会化、多元化土地保护机制的有效配合。

According to the models of land use dynamic change, the research on the dynamic change on land use quantity, space structure and land use degree were carried during 1989 and 2001. The results of the research indicated that the area of cultivated land and saline land increased, and the area of meadow, water areas and wetland reduced within 12 years; The variety ratio of cultivated land, meadow, water areas and saline land changed relatively great; and variety ratio of forestland, land used for resident, industrial and mining changed more steady; The land use degree presented a reducible tendency.

研究结果表明，吉林西部在12年内耕地和盐碱地面积增加，草地、水域和湿地面积减少；总体上，耕地、草地、水域和盐碱地的土地利用变化率较大，林地、居民、工矿用地和湿地变化较平稳； 12年间土地利用程度呈减小趋势，全区十个县市中只有白城和扶余的土地利用处于发展期，土地生态环境相对较好，而其他地区由于土地生态环境呈现不同程度的恶化，导致可开发利用的土地资源逐年较少，土地利用潜力小。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。