bastard fallow

bastard fallow的基本解释

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短期休耕地

与bastard fallow相关的网络例句 [注：此内容来源于网络，仅供参考]

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。

与bastard fallow相关的网络解释 [注：此内容来源于网络，仅供参考]

bastard fallow：短期休耕地

bastard equaling file ==> 粗齿扁平头锉 | bastard fallow ==> 短期休耕地 | bastard file ==> 荒目やすり