查询词典 farmland

But at the same time, it exposes out many problems, for examples land management system and evaluation system distemperedness, evaluation method limitation and so on, so the study of our country farmland evaluation must be enhanced.

同时，暴露出很多问题，如：土地管理体系、估价体系不健全，估价方法自身的局限性等等，我国农用地估价的研究还有待于进一步深入。

In recent years the desertification area of farmland is 100 thousand mu and the death area of manmade Elaeagnus angustifolia woods is 135 thousand mu.

方案三，将石羊河来水量设计接近在20世纪80年代的平均水准，上游地区通过节约用水，是可以实现的目标。

The soil erodibilities are compared and appraised for the majority of the soil types in Ningxia. The method published by D. W. Fryrear et al is adopted to calculate erodible fractions for the soils in Ningxia. The erodibilities of main soil types are compared and analyzed. Spatial distribution of soil erodibilities in the region can be perceived on the Map of Ningxia Soil Erodibility. The map is based on the digitized map of soil types of the all region by means of the geographical information system of Region Manager. Evaluation results show that erodible soils occupy a large portion of the total area of the region.(3) The third task is evaluation of effects of human activities for farming on soil erodibility. Tillage and cultivation can alter soil properties. The paper, based on the discussion on the characteristics of farmland suffering wind erosion in the region, analyzes the contents and intensities of farming disturbing surface soil. Emphasis is paid on the effect of farming on erodibilities of each type of soil.

W Fryrear等人的计算土壤可蚀部分含量的方程，此方程的自变量包括土壤有机质、碳酸钙、沙粒含量、沙粘比，计算了宁夏主要土壤类型表层的可蚀含量，进而比较它们的可蚀性，并以宁夏土壤分布图为底图用地理信息系统建立了宁夏土壤风蚀数据库，完成了宁夏土壤可蚀性图，评价结果显示宁夏地区主要的土壤类型较容易遭受风蚀；（3）农业经营对土壤风蚀的影响及其评价，在分析宁夏农业土壤遭受风蚀特征的基础上，首先讨论了农业活动对土壤理化性质的干扰，评价主要耕作栽培措施对土壤风蚀的影响，选取粗糙度、表面结皮、可蚀颗粒含量、留茬和有效时间为指标，用打分方法作了评价。

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。

There are also deserts, huge forested plateaus and lush farmland, but mountains are a predominant feature.

还有沙漠，巨大的高原和茂密的森林农田，但山区的一个主要功能。

This typical water logging land distributes in the slope farmland of black soil fragmentarily, which unit area was about 10~900a and the resistance of soil to drought and logging was weak.

尿炕地单块面积约0.67～60hm~2，零星分布在大面积的黑土坡耕地中，总面积约占耕地总面积的4％，其耕层土壤抗干旱和抗涝渍的缓冲能力均较低。

This research utilizes MUSIC（the Model for Urban Stormwater Improvement Conceptualisation）in Yong-Ann watershed to divide into three kinds of land utilizing type attitudes, it is the forest land, farmland and residential area respectively, and three kinds of structural BMPs facilities, it is the grassed swales, vegetated buffer strips and detention basins respectively.

中文摘要本研究利用MUSIC（the Model for Urban Stormwater Improvement Conceptualisation）将永安集水区划分为三种土地利用型态，分别为林地、农地及住宅区，以及三种结构性BMPs设施，分别为草沟、草带及滞留池。

HaNPV is the earliest commercial baculovirus insecticide in China and about 100, 000 hectare cotton farmland had been used such insecticide to prevent Heliothis armigera by the end of 1999. Many aspects of HaNPV such as the isolation and identification of different virus strains, bioassay of their toxicity, infectivity and duplication in culture cells, genome sequencing and some functional genes have been researched.

国内已对HaNPV进行了多方面的研究，包括病毒株的分离鉴定、形态特征、病毒生物活性测定、离体细胞感染和复制、测序和功能基因研究，基因工程病毒杀虫剂的构建等；但对其复制侵染与宿主细胞互作的分子机理，目前仍缺乏足够且深入的了解。

Meanwhile, the large hydraulic project and the irrigation and drainage project in farmland have effects on hydrographic environment and soil environment, respectively.

土地整理活动是一个重建生态环境系统的过程，在此过程中将会对区域环境要素及其生态过程产生影响。

The analysis of the fungal community similarity between different ecosystem-types showed that farmland soil and shelter-belt soil had the highest similarity, indicating that the soil moniliaceous hyphomycetes in this two ecosystem-types had more common species.

对不同生态类型土壤中淡色丝孢菌的相似性分析发现，农田和防护林带生境的相似性系数最大，说明这两种生境具有较多的共同物种；湿地和城市花园生境的相似性系数最小。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。