Locally grown trees and plants are considered the best choices for windbreaks. 当地生长的树木或植物被认为是防风林的最佳选择。
Windbreaks can be highly valuable for protecting grain crops. 防风林在保护粮食作物方面极具价值。
For example, studies have been done on windbreaks in parts of West Africa. 例如,研究小组已经完成对西非部分地区防风林的研究。
Windbreaks seem to work best when they allow a little wind to pass through. 当防护林能允许一小部分风经过的时候,它的作用最有效。
When choosing a site, take account of existing vegetation for windbreaks, shading and views. 当你选择地点的时候,对现时存在的植被防风墙遮阳和视野等方面进行一下估算。
Studies have shown that grain harvests can be20% higher on fields protected by windbreaks compared to those without such protection. 研究表明,那些受到防护林保护的田地要比没有受到保护的收成高20%。
Windbreaks help prevent the loss of soil. 防风林有助于防止土壤流失。
Windbreaks stop the wind from blowing soil away. A screen for protection against the wind. 防护林的作用就是防止风把土壤吹走。
Windbreaks are an age-old farming strategy, of course. 当然防风林是一种古老的农家措施。
But here is something interesting about windbreaks. 但关于防风林还有一些有趣的东西。
One method of soil conservation is the use of windbreaks. 其中一种土壤保护的方法就是使用防风林。
Alternate strips planted to crops each year serve as windbreaks for the fallow strip. 每年播种作物的轮种带可用作休耕带的防风林。
An easy rule to remember is that windbreaks can protect areas up to ten times the height of the tallest trees in the windbreak. 要记住一个简单的原则,防风林可以保护的农田范围可以达到其最高树木高度的十倍。
They provide windbreaks and shade from the sun. 它们可以提供防风林并且遮挡太阳。
For illustration purposes, however, I will limit my comparisons to the high yield region. The windbreaks should also limit violent motions of the wind to those areas closest to the windbreak. 为说明起见,我将把这种比较限制在高产地区。防护林还可以限制其周边地区狂风的肆虐。
The windbreaks should also limit violent motions of the wind to those areas closest to the windbreak. 防护林还可以限制其周边地区狂风的肆虐。
Windbreaks are barriers formed by trees and other plants. 防风林是由树木和其他植物形成的屏障。
These studies found that grain harvests were as much as twenty percent higher in fields protected by windbreaks compared to fields without them. 研究发现,与没有防风林的农田相比,防风林保护下的农田的粮食收成增长了20%以上。
Shelters of boughs, arranged in an A-framed fashion from a ridge pole make good temporary shelters and are first rate as windbreaks at night. 用树枝支起的帐蓬,由一根木柱支成金字塔式,是个很好的临时住所,防风能力也很好。
Optimal spacing intervals between windbreaks could be predicted from the indices of a given windbreak structure, percentage of reduction of windspeed desired and tree growth model. 因此,树木林带的主带间距可以通过林带结构系数、希望降低风速的比例和树木生长模型来确定。
Optimization of spatial arrangements and patterns for shelterbelts or windbreaks 林带空间配置与布局优化研究
This review examines recent modeling and numerical simulation studies as well as the mechanisms that control flow and turbulence around shelterbelts and windbreaks. 在本综述中,我们考察了绕防护林带的流动与湍流控制机制,最新的模型与数值模拟研究情况;
Analysis of Ventilation Process Using an Auxiliary Fan without Windbreaks 无风墙辅扇通风过程的分析
Studies on the effect of farmland windbreak on preventing rice lodging and yield reduction under violent tropical storm in coastal regions of Jiangsu show that the percentage of rice lodging on the farmland with and without windbreaks is respectively 16.28% and 49.73%. 对江苏沿海地区(强)热带风暴条件下农田林网防止水稻倒伏和减产效应的研究表明,有林网农田的水稻倒伏率为16.28%,无林网农田为49.73%;
An ecological model simulating the process of winter wheat growth is established, and used to do numerical simulation on its growth process with and without the protection of windbreaks. 给出了一个模拟冬小麦生长过程的产量生态学模式,并对黄淮海平原林网保护区冬小麦的生长过程进行了数值模拟。
The turbulence correlations were higher with the distance from windbreaks and the scale of turbulence increased. 在远离林带以后,林带的作用减弱,随着湍流尺度增大,导致湍流相关系数增大。
And the sampling estimation of small forest land and windbreaks on farmland coverages. 小块林地及农田林网覆盖率的抽样估算等问题及其解决办法。
On interaction of constructional parameter on windbreaks 防护林结构参数的交互作用研究
Construction History and Actuality of Shelterbelts/ Windbreaks Artificial Eco-engineering 农田防护林人工生态工程的构建历史与现状
Study on the Protection Effects of Sparse Windbreaks 疏透型林带防护效应的实验及理论研究