• He says the substances are especially dangerous because they travel through the air and stay in the atmosphere, soil and water.

    VOA: special.2009.06.23

  • The students use the mixture to fertilize the soil instead of buying chemical fertilizers that could harm the environment.

    VOA: special.2009.04.14

  • For example,she noted that crops designed to resist damage by glyphosate need fewer pesticides that are more toxic to the soil.

    VOA: special.2010.04.27

  • And Amber Banks says they want the same people who get food donations to learn how to work the soil.

    VOA: special.2010.07.06

  • But a newly announced project to develop soil maps and make them available on the Internet promises help for the situation.

    VOA: special.2009.01.20

  • Fabian Fernandez, a soil and plant nutrition expert at the University of Illinois, says no-till means less intensive labor.

    VOA: special.2010.09.28

  • If possible, in the year before you plant potatoes, plant a cover crop to improve the soil and the potato production.

    VOA: special.2009.03.10

  • To improve clay soils, mix in garden waste or other organic matter and turn the soil deeply in the fall.

    VOA: special.2009.03.10

  • For the best results, carrots should be grown in sandy soil that does not hold water for a long time.

    VOA: special.2009.02.24

  • The first lady showed the young gardeners how to turn the soil for the one hundred square meter garden.

    VOA: special.2009.03.31

  • Think about growing cabbage if you live where the weather is cool and the soil is moist and fertile.

    VOA: special.2009.03.03

  • Experts say warm days, cool nights and a medium soil temperature are the best conditions for growing carrots that taste great.

    VOA: special.2009.02.24

  • The researchers say the nanodiamonds were all found in a level of soil thought to be about 13,000 years old.

    VOA: special.2009.01.20

  • The water is collected through two holes and in the holes there is a siphon to carry it to the soil.

    VOA: special.2010.07.13

  • Farmers lack enough inputs to maintain soil fertility is parts of many developing countries, especially in Africa south of the Sahara.

    VOA: special.2009.07.28

  • David Robson from the University of Illinois Extension says the best results come from moist, richly organic black soil.

    VOA: special.2009.07.07

  • He says a dense, competitive crop that quickly shades the soil from the sun will help reduce weed growth.

    VOA: special.2011.07.26

  • If your soil is very dry, you can add peat or compost, which returns nutrients to the soil.

    VOA: special.2010.06.15

  • So keep the garden watered. Moist soil absorbs more heat than loose,dry soil covered with mulch or vegetation.

    VOA: special.2010.01.12

  • The volunteers placed the plants about five centimeters into the soil to prevent rising and falling water levels from pulling them out.

    VOA: special.2009.10.06

  • "Terroir" is the word used to describe how a vineyard's soil and climate give a wine special qualities.

    VOA: special.2010.10.13

  • Plantings in the wetlands help hold down the soil against the forces of erosion, like wind and water.

    VOA: special.2009.10.06

  • Intensively used grasslands are also harmed as the soil is continually crushed under the weight of heavy animals.

    VOA: special.2010.01.19

  • Radioactive particles travel in the wind and get absorbed into soil with the help of rain and snow.

    VOA: special.2011.03.29

  • This will help dry the soil. In normal conditions, placing mulch around rose plants is a good idea.

    VOA: special.2010.06.15

  • The system is designed to identify the presence of contaminants like soil or animal waste on fresh produce.

    VOA: special.2011.06.07

  • MICHELLE OBAMA: "Hi Everyone! We are here digging up soil, because we are about to plant a garden."

    VOA: special.2009.11.27

  • He and his team studied tree mass, dead wood and soil carbon in twenty-five mangrove ecosystems in the Indian and Pacific Oceans.

    VOA: special.2011.05.10

  • Another recent study found that a single tillage does not harm yield or soil structure in land that is normally not tilled.

    VOA: special.2010.09.28

  • The process releases some carbon dioxide, but Rajan Vempati says it would be reabsorbed into the soil naturally.

    VOA: special.2009.12.01

词组短语

soil erosion n. 水土流失;土壤侵蚀;土壤流失;泥土流失

soft soil 软土,软泥地

soil water 土壤水

soil moisture 土壤水分;土壤湿度

soil fertility 土壤肥力;地力

soil conservation 土壤保持

water and soil conservation 水土保持

soil layer 土层;土壤层次

frozen soil 冻土

soil pollution 土壤污染

fertile soil 沃土,肥沃的土壤

red soil 红壤;红土

soil nutrient 土壤养分

soil mechanics 土壤力学,土质力学

sandy soil 砂土,沙质土壤

foundation soil 地基;地基土

surface soil n. 表土;(用于农耕的)地面土壤

expansive soil 膨胀土

soil pressure 土压力;土壤压力

soil structure 土壤结构;土壤构造

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