久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

您現在的位置: 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 英語點津姍姍編輯)

 
 
相關文章 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際笑話
  to my 2007
  《康定情歌》有誰可以譯出韻味來?
  被宰了
  破罐子破摔




主站蜘蛛池模板: 亚洲成成品网站有线 | 精品国产一区二区在线观看 | 国产综合在线观看 | 午夜欧美日韩在线视频播放 | 亚洲精品亚洲人成在线麻豆 | 国产精品免费一级在线观看 | 欧美一级精品 | 久久成 | 91青青国产在线观看免费 | 欧美精品专区免费观看 | 国内视频一区二区 | 视频二区欧美 | 亚洲成人在线免费观看 | 久久爱青青草 | 日本一级毛片免费播放 | 久久精品国产精品亚洲 | 美女张开腿让男人桶的 视频 | 女人张开腿让男人捅爽 | 国产欧美日韩一区二区三区在线 | 男人女人做性全程视视频 | 欧美一级在线观看视频 | 欧美成人久久久免费播放 | www.黄色大片 | 国产精自产拍久久久久久 | 一本色道久久综合亚洲精品加 | 欧美一区二区三区国产精品 | 二级黄的全免费视频 | 99久久免费精品国产免费 | 久久精品国产99精品最新 | 国产精品久久久久精 | 手机看片精品国产福利盒子 | 欧美日韩视频一区二区在线观看 | 成人免费视频在 | 中国老妇另类xxxx | 亚洲欧美国产精品 | 国产成人爱片免费观看视频 | 亚洲精品国产免费 | 日韩在线一区二区三区视频 | 色网址在线观看 | 欧美a毛片| 国产黄色片网站 |