本听写稿由yukiya小裕听写，来自沪江VOA听写系统

The United States Department of Agriculture is working to save the ash tree. So are agriculture departments and university extentions extensions in a number of states.

In some places, farms farmers are using " detection trees. " These have an area where bark has been cut away. The aera circuls area circles the tree and it is called " a gerdle" girdle. The gerdling girdling process weekens weakens the trees. It makes them easier targets for borals borers, and shou shows if the insects are nearby.

Efforts to stop the sbread spread of the ameraled emerald ash bover borer include cutting down afected affected trees. A tree farmer in MarelendMaryland, for example, recently face faced the lost loss of hundrads hundreds of trees. The There are worries that the ash tree might disappear and last unless the invation invasion is controlled. To prepare for such possiblitya possibility, a government labertory laboratory is collecting seeds from ash trees. They vit ber dorf

David Burgdorf works in east lansin Mishegen East Lansing, Michigan, for the natural resources canservation service. The Natural Resources Conservation Service; the service is part of the United States department Department of agricultureAgriculture. He is asking people to sendin send in ash seeds. The labertory laboratory examines and X-rays x-rays the seeds to make sure there are no living bover anbiverlsborer embryos.

听写于：2008-11-3 20:10
用　时：916
正确率：79 %(+0分)
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Insect Threatens Ash Trees in US (2/2)

The United States Department of Agriculture is working to save the ash tree. So are agriculture departments and university extensions in a number of states.

In some places, farmers are using "detection trees." These have an area where bark has been cut away. The area circles the tree and is called a girdle. The girdling process weakens the trees. It makes them easier targets for borers, and shows if the insects are nearby.

Efforts to stop the spread of the emerald ash borer include cutting down affected trees. A tree farmer in Maryland, for example, recently faced the loss of hundreds of trees. There are worries that the ash tree might disappear unless the invasion is controlled. To prepare for such a possibility, a government laboratory is collecting seeds from ash trees.

David Burgdorf works in East Lansing, Michigan, for the Natural Resources Conservation Service; the service is part of the United States Department of Agriculture. He is asking people to send in ash seeds. The laboratory examines and x-rays the seeds to make sure there are no living borer embryos.