时间:2019-01-11 作者:英语课 分类:VOA慢速英语2007年(四)月


英语课

This is the VOA Special English Agriculture Report.


 
Spreading mulch
Mulch is important to farmers. Mulch is a protective cover of material that is spread on top of soil. It is usually made out of organic material, like crop waste.  Farmers may keep the remains 1 of maize 2 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.


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 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 nutrients 3 for plants. It also provides a good environment for earthworms and other helpful organisms 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 works 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 moderate the effects of winter weather can be added late in autumn. The best time is after the ground has frozen 4, 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. 


And that's the VOA Special English Agriculture Report, written by George Grow. Your can download transcripts 5 and audio files of our reports at voaspecialenglish.com. I'm Steve Ember.



n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
n.玉米
  • There's a field planted with maize behind the house.房子后面有一块玉米地。
  • We can grow sorghum or maize on this plot.这块地可以种高粱或玉米。
n.(食品或化学品)营养物,营养品( nutrient的名词复数 )
  • 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》
adj.冻结的,冰冻的
  • He was frozen to death on a snowing night.在一个风雪的晚上,他被冻死了。
  • The weather is cold and the ground is frozen.天寒地冻。
n.抄本( transcript的名词复数 );转写本;文字本;副本
  • Like mRNA, both tRNA and rRNA are transcripts of chromosomal DNA. tRNA及rRNA同mRNA一样,都是染色体DNA的转录产物。 来自辞典例句
  • You can't take the transfer students'exam without your transcripts. 没有成绩证明书,你就不能参加转学考试。 来自辞典例句
标签: voa 慢速英语
学英语单词
acidhouses
air-entrained cement
Arteriae metatarsales plantares
ascending fluid
ASCEP
avip
barrier energy
biological sampling
biopacing
bollock
bounded loss function
breech buoy
bubble ring
C3 convertase
callianthemus
chambulle
character multiplexer
chicken-liver
Chinese pencil
Chromatiales
closing hour
Coevorden
coexistents
Collabium formosanum
combination of time and usage method
condensation method
Dibiraf
digital handling equipment
dimedon
disclamatory
dissipation-factor test
distolabial angle
dual-capstan tape unit
efficient production structure
EFFO
egoff
eupraxic center
exsoldier
eyerolled
feeder-breaker
Flemming's triple stain
flown the coop
frequency modulation threshold
Gas Oil Isomax
give the benefit of the doubt
glycin(e)
greensand
homoplasious
incubator space
infinite cusp
inoperable system
Jewish Autonomous Region
juju 2,ju-ju
lardizabalaceaes
let something off
Like Chinese arithmetic
Lillån
lymantria dispars
marconi aerial
micro-mho
Mismā, Jibāl al
multiple value function
musculi obliquus externus abdominis
NETEC
nolting
Nutraderm
off-line data reduction
orange-and-whites
para-cementite
phage exclusion
polargraphy
Policy of Protection in Shipping
primary tabulation
pronotaries
PTPA
refraction interpretation
rugged construction
rumford
Rutana
sangre de cristo mountains
shemeful
shoehorned
song lyrics
special-carte
Sphingomonas
spray carburettor
subfertilities
take over the litigation
target craft
termination of function procedure
to the last extremity
tubular cyst
two-ness
ursol B
Urubupunga Falls
vaginography
veloz
video-game
violinistic
Wehringen
zig-zag reflection