www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

您現(xiàn)在的位置: Language Tips> Audio & Video> Special Speed News  
 





 
Giving grasslands a rest
[ 2008-01-15 09:59 ]

 

 

Download

This is the VOA Special English Agriculture Report.

Grasslands need time to rest when cattle and other animals feed on them. Moving animals from one area of pasture to another can provide the time needed for new growth. This is called rotational grazing, and we have a question from listener Zhang Guohui in China about how it works.

Experts say rotational grazing is good for the land and the animals, and it can save money. This form of grazing can reduce the need for pesticide chemicals by reducing the growth of weeds. And it can limit the need for chemical fertilizers by letting natural fertilizer, animal droppings, do the job. Rotational grazing can even help prevent wildfires by keeping grasslands in good condition.

Letting animals feed continually and intensively in the same grazing areas can require costly replanting. Animals eat the most desirable growth first. When that keeps happening, the roots do not have enough time to recover. As a result, less desirable plants may replace them.

Intensively used grasslands are also harmed as the soil is continually crushed under the weight of heavy animals. And the animals usually avoid their own waste, so that reduces the amount of good grazing space even more.

Experts say that while rotational grazing can save money over time, it also requires planning. And that starts with a good map to mark fences, water supplies and grazing areas.

Changing methods of grazing also requires time. Farmers may want to put up electric fences to enclose grazing areas, called paddocks. The paddocks will need water. Some farmers design a path for animals from different paddocks to drink from a common watering place.

Farmers can start rotational grazing by removing animals from a pasture when the grass is eaten to less than five centimeters. The pasture is then kept empty until the grass grows to more than fifteen centimeters high.

Experts say sheep and goats may require special preparations. They may need stronger fences than other animals. And while they eat the grass, they may need guard animals like llamas to protect them from animals that would like to eat them.

And that’s the VOA Special English Agriculture Report, written by Jerilyn Watson. Transcripts and MP3s of our reports are at voaspecialenglish.com. And if you have a question, we might be able to answer it on our program. Write to special@voanews.com and please include your name and country. I’m Steve Ember.

rotational grazing:輪牧

(Source: VOA 英語(yǔ)點(diǎn)津姍姍編輯)

 
 
相關(guān)文章 Related Stories
 

 

 

 
 

本頻道最新推薦

     
  Giving grasslands a rest
  Automakers show off green, fuel efficient vehicles
  Dog fashions hit Japan
  Nicknames: America's 50 states(second)
  New Hampshire primary leaves presidential race wide open

論壇熱貼

     
  pee park
  狗不理的英文招牌很可能成為新的國(guó)際笑話
  to my 2007
  《康定情歌》有誰(shuí)可以譯出韻味來(lái)?
  被宰了
  破罐子破摔




主站蜘蛛池模板: 国产乱子伦真实china | 久久久久久久国产精品视频 | 美女黄色在线网站大全 | 韩国美女爽快毛片免费 | 国产亚洲精品一区二区久久 | 国产三级网站在线观看 | 日本韩经典三级在线播放 | 伊人婷婷色香五月综合缴激情 | 武松金莲肉体交战在线观看 | 精品视频在线视频 | 亚洲精品一区二区久久 | 久久国产精品岛国搬运工 | 久久久久女人精品毛片九一 | 河边性xxxxfreexxxxx | 中文在线亚洲 | 亚洲夜夜爽 | 欧美日本一区二区三区生 | 欧美与黑人午夜性猛交久久久 | 欧美性色黄大片在线观看 | 国内成人精品视频 | 中文国产成人精品久久无广告 | 一级免费视频 | 成人a级 | 久草在线 | 97在线免费| 国产性videostv另类极品 | 亚洲孕交 | 99九九99九九九视频精品 | 一个人看的www日本高清视频 | 久久99精品九九九久久婷婷 | 日韩精品一区二区三区视频网 | 国内精品久久久久久久久久影视 | 久久极品视频 | 性色xxx | 国产片一级aaa毛片视频 | 免费亚洲成人 | 精品成人在线视频 | 欧美日韩在线观看区一二 | 国产精品99在线观看 | 亚洲成a人片在线看 | 亚洲a级片 |