查询词典 farmland

It is concluded that the progress of urbanization is driven by the low cost of farmland conversion at the cost of the loss of peasants' interests.

研究结论：当前的城市化进程是由低成本的土地非农化推动的，而这种低成本是以农民集体及个人利益受损为代价的。

Two years age Francis worked with the Conservancy to include his farm in a county farmland protection program.

两年前，弗朗西斯与环保协会合作，把自家的农场纳入了农村农田保护规划中。

Two years ago Francis worked with the Conservancy to include his farm in a county farmland protection program.

距离高楼林立的曼哈顿和费城两小时车程的地方，栖息着一些世界上最大的黑熊。

County's forest coverage rate of 60% to a farmland water quality standards for the development of the green, pollution-free, organic products provide a good ecological conditions.

全县森林覆盖率达60%，农田水质达到一级标准，为发展绿色、无公害、有机农产品提供了良好的生态条件。

In the recent 50 years, farmland ecosystem in Sanquan town develops from simple food production to diversification ecosystem with continuous increasing in multiple crop index and continuous expanding in paddy field area.

近50年来，南川市三泉镇农田生态系统由单纯的粮食生产系统向多种经营生态系统发展，复种指数不断上升，水田比例不断提高。

This paper, by establishing some functions between theoretic unit production of standard crop and natural quality of farmland graduation, and between feasible unit production of standard crop and utilization index, verifies the theoretic unit production, feasible unit production, and based on this, the regional theoretic unit production, regional feasible unit production.

通过建立农用地分等单元标准粮理论单产和自然质量等指数的函数关系、标准粮可实现单产和利用等指数的函数关系，分别核算分等单元的理论单产及可实现单产，以此为基础核算区域理论产能及可实现产能。

We took administrative districts at the county level as valuation units, estimated the current economic values of 7 ecosystem services (gas diversification, organism production output, and climate control conservation of water supply, soil formation and conservation, and environment purification, maintenance of organism culture and enter) for 6 biomes (forest, grassland, desert, farmland, wetland, and city).

以县级行政区为评价单元，核算了森林、草地、荒漠、农田、湿地和城市6大类和气体调节、水源涵养、土壤保持、环境净化、生物多样性维护、生物产品产出、文化娱乐7个方面的生态服务价值。

Result showed that, with the controlled facility, the water storage is about 19×10^3 m^3/km of in the main drainage canal, the groundwater table in farmland is raise about 0.3 to 0.5 m and the crop water use is increased about 50 to 80 mm comparing with the non controlled main drainage canal.

结果表明，单位长度大沟年调蓄水量为1.9×10^4立方公尺/km左右，其影响范围内的农田地下水位较无控制大沟平均抬高约0.3~0.5 m，每年可增加作物对地下水的直接利用量50~80 mm，区域年农田水资源调控总量110 mm左右，约占当地年均降雨量的13%；只要控制合理、管理得当，不会因此而影响排水系统对农田涝渍的有效控制或降低原有排水工程的除涝降渍标准。

Based on experimental data from laboratory and field experiments, the relationship between rainfall recharge and groundwater level under farmland drainage is analyzed in this paper.

以室内一维土柱试验和室外水平衡小区观测资料为基础，对农田排水条件下降雨入渗补给与地下水埋深关系进行了分析，根据降雨、蒸发与地下水埋深关系相似的规律，仿照国内外排水计算中较为广泛应用的阿维里扬诺夫经验公式的结构形式，建立起降雨入渗补给与地下水埋深的关系，并采用室内外试验资料对该关系式进行了验证。

The mid-1960s to mid-1970s, Yanqi oasis farmland increased in a lower level and drainage measures gradually improved so that agricultural land area of heavily salinity reduction.

60年代中期到70年代中期，焉耆绿洲耕地面积增速减缓和排水措施逐步完善，使得农耕区重度盐渍化土地有所减少。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。