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VOA慢速英语2009年-Agriculture Report - How a Hoop House

时间:2010-01-11 02:57来源:互联网 提供网友:斗破苍穹   字体: [ ]
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This is the VOA Special English Agriculture Report.

Today we discuss the greenhouse effect.

Farmers and gardeners have long used greenhouses to extend the growing season in cold weather. Now, hoop1 houses are gaining popularity. Hoop houses are sometimes called a temporary greenhouse or passive solar greenhouse.

Some hoop houses are rounded; others are shaped more like a traditional house

A hoop house is basically a metal frame covered with plastic or other all-weather material. A common design looks like a high tunnel. Unlike a greenhouse, which uses a heating system, a hoop house is heated by the warmth of the sun.

Now, the United States Department of Agriculture has announced a program to help farmers who want to build hoop houses.

The department, through its Cooperative State Research, Education and Extension Service, has been supporting a project in Michigan. That state has a short growing season.

As part of the research project, nine farmers were given materials and trained how to build and use a hoop house. The results showed that well-managed hoop houses can grow high-quality crops.

However, crops are not the only things that grow well. The research found that weeds grow faster in a hoop house. Weeding, seeding and watering requires at least as much work as crops grown in the open air. The researchers also advise growers to add compost material to the soil in hoop houses to build nutrients2.

Eliot Coleman is an organic farmer and a writer in Maine who has helped popularize the idea of four-season farming. His ideas about hoop houses sounded good to John Biernbaum in the Horticulture Department at Michigan State University.

Professor Biernbaum tried hoop houses on the Student Organic Farm at Michigan State and had success. Project director David Conner says it was a "test drive" for the research on private farms. The agricultural economist3 points to the demand for locally grown crops. "People are hungry for good, fresh vegetables," he says.

Hoop houses for winter growing can even be found at the White House, where Michelle Obama has a vegetable garden. The houses are small because of limited space on the South Lawn.

A hoop house specialist at Michigan State University, Adam Montri, has videos on YouTube explaining how to build one. You can go to voaspecialenglish.com and find a link to his videos and also a link to our videos on YouTube.

And that's the VOA Special English Agriculture Report, written by Jerilyn Watson. I'm Bob Doughty4.

 


点击收听单词发音收听单词发音  

1 hoop wcFx9     
n.(篮球)篮圈,篮
参考例句:
  • The child was rolling a hoop.那个孩子在滚铁环。
  • The wooden tub is fitted with the iron hoop.木盆都用铁箍箍紧。
2 nutrients 6a1e1ed248a3ac49744c39cc962fb607     
n.(食品或化学品)营养物,营养品( nutrient的名词复数 )
参考例句:
  • a lack of essential nutrients 基本营养的缺乏
  • Nutrients are absorbed into the bloodstream. 营养素被吸收进血液。 来自《简明英汉词典》
3 economist AuhzVs     
n.经济学家,经济专家,节俭的人
参考例句:
  • He cast a professional economist's eyes on the problem.他以经济学行家的眼光审视这个问题。
  • He's an economist who thinks he knows all the answers.他是个经济学家,自以为什么都懂。
4 doughty Jk5zg     
adj.勇猛的,坚强的
参考例句:
  • Most of successful men have the characteristics of contumacy and doughty.绝大多数成功人士都有共同的特质:脾气倔强,性格刚强。
  • The doughty old man battled his illness with fierce determination.坚强的老人用巨大毅力与疾病作斗争。
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