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From VOA learning English, this is the agriculture report.

Most kinds of rose plants come from Asia. But roses are also native to other areas including northwest Africa, Europe and the United States.

In 1986, the U.S. Congress chose the rose as the America's national flower. Technically, Congress and President Ronald Reagan declared that the national floral emblem. Whatever the name, the decision did not smell sweet to lovers of other flowers.

Some people say roses are difficult to grow. But you have a good chance of success if you start with a few suggestions from experts.

You should plant your roses where they can get sunshine for about six hours on bright days. You can buy roses from a garden center or by mail order. You can buy potted roses, also known as container roses, or bare root plants. Each kind has its fans.

Some gardeners say potted roses are easier to plant. They say the roots develop better. But Jeffrey Deslonge, president of Natural heals nursery in  Omaha Nebraska, points out that bare root roses come without soil. So they wait last to transport.

The University of Illinois Extension advises getting bare root roses as close to planting time as you canIf they arrive before you are ready to plant them, make sure the packing material is moist. Keep the plants in a cool, dark place. You plant the roses while they are dormant. The resting plants have no leaves but still need water.

When growing roses, the soil should feel moist deep down. Watering should be done in the morning. That can prevent problems called black spot and mildew.

But do not water too much. Jeffrey Dinslage says people often ask him about unhealthy discoloration on rose leaves. He says the spots are usually caused by too much water. After heavy rains or too much watering, he advises pulling away mulch temporarily from around the roots. This will help dry the soil.

In normal conditions, placing mulch around rose plants is a good idea. Mulch suppresses weeds and holds moisture in the soil. You can use mulch made from bark, pine needles, cottonseed or oak leaves.

If your soil is very dry, you can add peat or compost, which returns nutrients to the soil. If aphids, thrips or other insects invade your rose bushes, you may be able to force them off with just a strong spray of water.

And thats the VOA Special English Agriculture Report. I'm Mario Ritter.

文本来源于LK英语乐园[report整理] SENEWS-2014-12-30






有些园丁说盆栽玫瑰更容易种植,他们表示,盆栽玫瑰根系长得更好。但内布拉斯加州奥马哈市原始山(Nature Hills)苗圃的负责人Jeffrey Dinslage指出,裸根玫瑰不带土壤,运输时重量更轻。



但水不要浇得太多。Jeffrey Dinslage称,人们经常就玫瑰叶子不健康的斑点请教他。他表示,这些斑点通常是由于水分过多造成的。大雨或浇水过多后,他建议将根部周围的护根物临时移走,这将有助于土壤变干。