查询词典 fallow

When farmers have exhausted all virgin forest on their land they begin to cultivate dryland rice in the bush-fallow Once they are cultivating in bush-fallow, increasing weed populations and declining yields result in an ever-shortening fallow period until a time is reached when it is no longer worthwhile for the farmer to continue.

当农民已经用尽了所有的原始森林在自己的土地，他们开始培养在丛林中，休耕（barbecho一旦他们在丛林休耕培养）陆稻，增加在日益缩短休耕期的时间，直到杂草种群和产量下降的结果到达时，它不再是值得农民继续。

In about a century' s time, their livelihood of swidden agriculture has been changing greatly along with the natural and social environment change. Before 1950s, as a minor group frequently move in the subtropical mountainous area characterized by scarce arable land, high forest coverage rate and sparse population, Kemu people has long been engaged in swidden agriculture which was simple, called for no sophisticated production tools and was suitable for frequent movement. At that time, they adapted to the environment change mainly by moving frequently from one place to another, and their livelihood was featured by complete dependence on environment, frequent movement and swiddening without continuous cultivation. From 1950s to early 1970s, their way of adaptation changed into migration within defined territory and shortterm fallow featured by complete dependence on environment, migration within limited area and short fallow. In early 1970s, they leaned from outside to cultivate irrigated fields and plant cash forest and their livelihood was featured by complete dependence on environment and agro-forestry.

近一个世纪以来，随着其所处自然环境和社会环境的变迁，其刀耕火种的生计方式在不断地变化：20世纪50年代以前，作为频繁迁徙于山多地少、森林覆盖率高、人烟稀少的热带、亚热带山区的弱小族群，以开发容易，便于流动作业不需要复杂生产设施的刀耕火种为其传统的生计方式，主要以迁徙的方式对环境变迁进行调适，其刀耕火种生计方式的特征表现为完全依赖型、随意迁徙型、无轮作型；20世纪50年代至70年代，其主要以固定区域内迁徙和短期轮作的方式对环境变迁进行调适，其刀耕火种生计方式的特征表现为完全依赖型、在固定区域迁徙型、短期轮作型刀耕火种；20世纪70年代初，其主要以外文化——开拓水田及人工造林的方式对环境变迁进行调适，其刀耕火种生计方式的特征表现为部分依赖型、粮林轮作型刀耕火种；20世纪80年代以后，其主要以发展橡胶种植业对环境变迁进行调适，其刀耕火种生计方式的特征表现为暂时依赖型刀耕火种。

Conventional tillage with bare ground, conventional tillage with straw incorporated and no-tillage with straw mulch were studied in the Hexi corridor of Gansu provience. The result showed: on summer fallow NTS stored soil water more than CTB and CTS by 30.62mm and 23.91mm, respectively; the winter storage irrigation quotas should be reduced to 900~1350 m^3/hm^2 on winter fallow; evaporation controlling rate arrived 38.1% and 7.3% at winter storage irrigation quotas 975m^3/hm^2 and 2100m^3/hm^2, respectively; NTS did not reduce ET during the spring wheat growth stage; yields different between treatments was not significant.

对甘肃河西内陆河灌区采用常规耕作、秸秆还田和覆盖免耕技术的农田水分效应进行研究，试验结果表明：在夏季休闲期，覆盖免耕比常规耕作和秸秆还田多贮水30.62mm和23.91mm；冬季休闲期可将大定额的储水灌溉减少到975~1350立方公尺/hm^2；覆盖免耕抑制蒸发率在储水定额为975立方公尺/hm^2时达到最大值38.1%，而在2100立方公尺/hm^2时最小为7.3%；覆盖免耕在作物生育期并没有减少土坡耗水量；各处理产量之间没有显著差异。

Results indicated that the rotation system of rice-vegetable with mid-late rice and the pattern of summer fallow significantly enhanced the activity of soil invertase and acid phosphatase, between which rice-vegetable pattern was superior to summer fallow.

结果表明，一季中晚稻的稻菜轮作模式和休闲轮作模式明显提高了土壤蔗糖酶和酸性磷酸酶的活性。

Development of the economy and the social productive forces ceaselessness are progressive since the reform and openness, people's living standard improves year by year, have begun to the life entering people leak from the consumption culture lying fallow, and have occupied important position in life.

改革开放以来经济的发展和社会生产力的不断进步，人们的生活水平逐年提高，休闲消费文化开始走入人们的生活，并在生活中占据了重要地位。

She read some classicality at home because nowhere to lie fallow indeed.

她实在无处可去，于是就呆在家里看看旧书。

The market is also crimped by a rule that no more than 20% of farmland in any county may lie fallow.

市场还受到一条规则的束缚：任何县中休耕农田不得超过农田总数的20%。

As a way of land reserve,it include fallow by year,by season and crop rotation.

土地休耕是土地储备的一种方式，包括年度休耕，季节性休耕、轮作休耕等。

On the basis of lots of related research, such as some data of sugarless confectionery product line and their literature, and some plant design information, I want to design the sugarless confectionery with nourishment, health, daintiness, and lies fallow function.

本课题的来源正是建立于此基础上，论文所述，旨在开发、设计一种集营养、健康、美味、休闲功能于一体的无糖糖果，其相关依据是无糖糖果生产线的相关数据和文献，以及工厂设计的相关资料。

Swing sang alone, fallow deer was eating grass far away, daddy elk was scrubbing his antlers on a tree.

秋千孤单地吱嘎作响，小鹿在远方吃草，公麋鹿在一边磨角。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。