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AGRICULTURE REPORT - Don't Know Much About Mulch?By George Grow
Broadcast: Tuesday, January 24, 2006
I'm Faith Lapidus with the VOA Special English Agriculture Report.
Mulch is important to farmers. Mulch is a protective1 cover of material that is spread on top of soil. It is usually made out of organic2 material, like crop waste. Farmers may keep the remains3 of maize4 or other crops on top of the soil. This creates mulch on the soil surface. The plant remains help protect the soil against wind and water damage. This is called conservation tillage.
Making mulch from old orchard5 trees
Mulching is one of the best things people can do for their plants. Mulch not only protects the soil against wind and water damage. It also helps keep the soil from getting too dry, and reduces the need for watering plants. It also limits temperature changes in the soil. And it stops unwanted plants, or weeds, from growing.
Organic mulch improves the condition of soil. As the mulch breaks down, it provides material which keeps the soil from getting hard. This improves the growth of roots and increases the movement of water through the soil. It also improves the ability of the soil to hold water. Organic mulch contains nutrients6 for plants. It also provides a good environment for earthworms and other helpful organisms7 in the soil.
The United States Department of Agriculture says it is easy to find organic mulch materials. Cut-up leaves and small pieces of tree bark can be used. Grass cuttings are also a good mulch for plants. Mulch from newspapers works8 well in controlling weeds.
The best time to add mulch depends on your goal. Mulch provides a thick barrier between the soil and the air. This helps to reduce temperature changes in the soil. As a result, mulched soil will be cooler than other soil in the summer. Mulched areas usually warm up more slowly in the spring and cool down slowly in autumn. In winter, the mulched soil may not freeze as deeply as other soil.
Mulch used to help moderate9 the effects of winter weather can be added late in autumn. The best time is after the ground has frozen10, but before the coldest weather arrives. Spreading mulch before the ground has frozen may attract small animals searching for a warm place to spend the winter. Delaying the spreading should prevent this problem. The animals will probably find another place to live.
This VOA Special English Agriculture Report was written by George Grow. Read and listen to our reports online at www.unsv.com. I'm Faith Lapidus.
1 protective | |
adj.防护的,保护的 | |
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2 organic | |
adj.有机的,有机物的;有组织的 | |
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3 remains | |
n.剩余物,残留物;遗体,遗迹 | |
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4 maize | |
n.玉米 | |
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5 orchard | |
n.果园,果园里的全部果树,(美俚)棒球场 | |
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6 nutrients | |
n.(食品或化学品)营养物,营养品( nutrient的名词复数 ) | |
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7 organisms | |
n.有机物( organism的名词复数 );有机体;生物;有机体系 | |
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8 works | |
n.作品,著作;工厂,活动部件,机件 | |
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9 moderate | |
adj.适度的,稳健的,温和的,中等的;v.节制,使...稳定,使...缓和;n.稳健的人 | |
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10 frozen | |
adj.冻结的,冰冻的 | |
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