查询词典 sloping fields

Sabaigrass planting improves the soil water conservation functions. The study results indicated: vegetation influenced the soil water conservationfunctions of the purple sloping fields greatly. Pure and mixed stands of Sabaigrassvegetation not only improved the soil water conservation functions in purple soilsloping fields, but also has the better effect than wild vegetation.

2龙须草种植可明显改良土壤蓄水性能本研究结果表明：植被的存在与否对紫色土荒山坡地土壤蓄水性能影响很大，龙须草纯种植被和龙须草-林木复合种植植被不仅极显著地改良了紫色土荒山坡地土壤蓄水性能，而且其改良效果显著好于野生自然植被。

Methods of measuring the input components, their prices and output elements are given. We put forward some new methods in measuring components, including composite depreciation rate, equality working hours, and proxy of input resources. Using the mature methods of efficiency measurement and decomposition available, we make a detailed investigation into 4 listing companies of oil industry with a span of 12 periods. Basic conclusions we draw include: labor inputs affects oil field output mostly in China; China oil fields operates in a low technical efficiency level average of 0.61; Increasing difficulties with expanding output has the greatest influence on cost; Cost efficiency of China oil fields averages at 1.47; Total factor productivity of China oil fields averages at 10%, accounting for 79% of the total output growth rate of 12.6%; Frontier technology progress contributes the most to TFP of China oil fields with 17 percentage points.

本文沿用了已有文献中关于效率计量与分解的成熟方法，对我国三家油田上市公司与一家上市石油公司12个时期的技术效率与成本效率进行了详细的计量、分解与分析，得到的基本结论有：劳动力投入是影响我国油田上市公司产出的最重要的影响因素；油田的平均技术效率仅为0.61；产出项是影响成本的显著因素，这说明随着产出增加而出现的开采难度增加是导致开采成本增加的重要因素；油田的平均成本效率为1.47；全要素生产率的增长平均在10％左右，占到了产出平均增长率12.6％的79％，表明我国油田的生产率的提高主要是依靠全要素生产率的提高而实现的，只有21％左右的产出增长是依靠要素投入而实现的；前沿技术进步是油田全要素生产率增长的主要源泉，在2001～2004年期间，前沿技术进步对油田生产率的贡献高达17个百分点。

Recently, Professor Liu Wen and his associates study the strong law of large numbers for Markov chain fields on trees. But for the nonhomogeneous Markov chain fields ,they only study the even-odd Markov chain and non-symmetric Markov chain. However, this article goes in the normal nonhono-geneous Markov chain fields and gets a class of limit theorems for the functions of two variables of finite nonhomogeneous Markov chain fields. Some limit theorems on the frequences of states and ordered state couples are obtained by several corollaries.

最近刘文教授及其合作者对树上的马氏链场的极限定理作了研究，对于非齐次马氏链场，仅对其中的奇偶马氏链场和非对称马氏链场作了研究，本文讨论了一般的非齐次马氏链场的极限性质，得到了关于Caylay树上有限非齐次马氏链场二元泛函的一类极限定理，作为推论得到了关于状态与状态序偶出现频率的极限定理。

The wind fields andtemperature fields data provided by "D files" from 14 surface observationstations around Beijing area are used to produce the mean wind fields and the meantemperature fields over Beijing area in summer and winter. Such results are gotten:(1)Due to the unique topography the wind of Beijing area during the day time is southernanabatic wind and in the night is northern katabatic wind in summer.

Keywords：wind field； temperature field； urban heat island； urban boundarylayer； Beijing area 北京区域夏冬季风场、温度场的观测研究胡小明刘树华梁福明王建华刘和平王迎春李炬摘要：用北京及市郊地区共14个地面气象观测站的全月数据顺序文件&D文件&提供的风场及温度资料，采用逐时月均匀的方法对北京及周边地区的冬夏两季的风场，温度场特征进行了研究。

Results show that the insect community structure in the Bt fields differed sharply from that in the CV fields. The populations of the Lepidopterous pests, such as cotton bollworm, corn borer, diamond bollworm and cotton leaf caterpillar, decreased significantly in the BT fields, while the populations of non-target pests with piercing-sucking mouthparts, such as leaf bugs, cotton spider mites, cotton aphids and whiteflies, increased obviously. Much more predators, such as spiders and ladybirds, and much less parasitiods of Helicoverpa armigera were observed in the BT fields.

结果表明，与常规棉田相比，Bt棉田棉铃虫、玉米螟、金刚钻、棉小造桥虫等鳞翅目害虫种群数量显著降低，而盲蝽象、红蜘蛛、棉蚜、烟粉虱等非靶标刺吸式害虫种群数量显著增加；蜘蛛、瓢虫等捕食性天敌种群数量显著增加，而棉铃虫的寄生性天敌种群数量则显著下降。

Some fields are infested with wild oats and rye grass (Lolium spp.). Twenty-eight per cent of fields in the 1984 survey were moderately or severely infested with Phalaris minor and these fields yielded 1.4 t/ha compared to 1.9 t/ha for fields without weeds.

一些田块受野燕麦和黑麦草的侵害。1984年的调查表明28%的大田中度或严重受到小粒鹃草的侵害，这些田产量为1.4吨/公顷，而无草害田块产量是1.9吨/公顷。

Some fields are infested with wild oats and rye grass (Lolium spp.). Twenty-eight per cent of fields in the 1984 survey were moderately or severely infested with Phalaris minor and these fields yielded 1.4 t/ha compared to 1.9 t/ha for fields without weeds.

一些田块受野燕麦和黑麦草的侵害。1984年的调查表明28%的大田中度或严重受到小粒虉草的侵害，这些田产量为1.4吨/公顷，而无草害田块产量是1.9吨/公顷。

The social civilization refers to the civilization evolution condition which takes the society as the essence; Viewed from the embryology vision-fields, the social civilization derives from the historical soil of political country, which is the pulling-out from political country; Viewed from the fact-judgment vision-fields, the social civilization realizes the inter-containing between civil society and political country, which is the reorganization to the political country; Viewed from the value-judgment vision-fields, the practice essence of social civilization with the politics vision-fields is to realize the person's full scale development and sustainable development.

社会文明指的是以社会为本位的文明进化状态；从发生学的角度来考察，社会文明形成于政治国家的历史土壤，是对政治国家的抽离与解构；从事实判断的角度来分析，社会文明在新的基础上实现了市民社会与政治国家的涵化，是对政治国家的重组与再造；从价值判断的角度来审视，政治学语境中社会文明的实践本质在于实现人的全面发展与可持续发展。

It is pointed out bythe monthly dynamic analysis and yearly comparative analysis that the improvementof soil water conservation functions in purple soil sloping fields by planting Pure and mixed stands of Sabaigrass vegetation is synchronous with the local raining rhythmand the longer planted the better the effect.

月季动态分析和年际间比较分析指出，龙须草纯种植被和龙须草-林木复合种植植被对紫色土荒山坡地土壤蓄水性能改良效果既与当地降雨节律同步，又呈现出随着处理年限延长而强化的趋势。

This research selected the 33 national ecological restoration counties in Shaanxi province as examples to probe into partition, the productive characteristics and the impacting factors of productive benefits of the sloping fields through the methods of fieldworks, quanlitative and quantitative analysis, and consideration of geographic features, cropping division and landforms of each county.

以陕西省33个国家级生态退耕县的坡耕地为研究对象，运用定性、定量相结合的方法，在大量实际调查并结合各县的地理特征、农业种植业区划、地貌类型的基础上，对陕西省生态退耕县坡耕地的分布进行了分区，并对影响坡耕地生产效益的主要因素进行了较为全面的分析。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。