时间:2018-12-07 作者:英语课 分类:农业与发展


英语课

AGRICULTURE REPORT -January 8, 2002: Composting


By Gary Garriott
This is the VOA Special English AGRICULTURE REPORT.


Many farmers around the world are composting to improve their soil so they can produce better crops.
Composting is the mixing of plant or animal wastes so they break down and produce simpler substances.


Farmers add compost to their soils instead of burning the plant and animal wastes or throwing them away.
Compost is an example of a natural organic fertilizer. Organic fertilizers help to make soils rich so that they
produce more crops for a longer time.


During the growing season, plants take gases from the air such as carbon, hydrogen and oxygen. They combine
these gases with minerals from the soil.


After the growing season ends, many parts of the plant die. Farmers gather a large amount of dead plant materials
into small hills called compost piles. They may add animal wastes. They must add water so the materials will
break down or decay 1.


Soon the plants are attacked by insects and organisms including worms and bacteria. Oxygen helps the organisms
change the plant materials more rapidly. The plants decay into a mixture that can be spread on the farmland
where the crops are growing. The compost returns needed nutrients 2 to the soil.


Some rules need to be followed to produce the best quality compost. Good compost piles need water to speed the
process of decay. Yet the piles should not be too wet or the plant material will be ruined. The temperature of the
compost pile should not be too high or too low. The best temperature for a compost pile is about thirty to thirty-
seven degrees Celsius 3. You can turn the pile over and over to help cool down the material. Turning the compost
pile over adds more oxygen to the mixture which helps it decay.


Sometimes small animals such as rats and mice like to eat the composting materials. This can be prevented if you
add a thin amount of soil to the top of the compost pile.


Farmers who use compost can increase the amount and quality of their crops. Computer users can find more
information about composting from Volunteers in Technical Assistance or VITA.


VITA is an organization based in the United States that helps people around the world use science and
technology to solve problems. VITA’s Internet address is w-w-w dot v-i-t-a dot o-r-g.


This VOA Special English Agriculture Report was written by Gary Garriott.



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1 decay
vi.腐烂,衰落;n.腐烂,腐朽,衰败状态
  • The vegetables have begun to decay.那些蔬菜已开始腐烂。
  • Our powers decay in old age.我们的体力在老年时就衰退。
2 nutrients
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》
3 Celsius
adj.摄氏温度计的,摄氏的
  • The temperature tonight will fall to seven degrees Celsius.今晚气温将下降到七摄氏度。
  • The maximum temperature in July may be 36 degrees Celsius.七月份最高温度可能达到36摄氏度。
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abete
Admont
advertorials
alambre
American Lloyds
Andreas
antifouling property
arcadings
authority over/ with
autotransplantations
banded penguin
base hardwares
berberas
bird-wing
bounds on error
british atomic energy authority
business princilples
chamotte
chief of the executive
common register
compensating winder
comprehensive index system
CQP
cross-filer
degree of intoxication
ecofeminisms
encl
engine dust pan
fentiazon
footing piece
fracture of upper end of tibia
fraternity houses
fullage
fungous gall
Futa Jallon
gases up
genus angraecums
gryllacridids
hear sb out
Heritiera macrophylla
hla-g
hogsett
horned screamers
humor
hydraulic hammer
irracional
joeys
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JSCS
lawful adoption
like greased lightning
linksy
margaret mitchells
mean activity coefficient
microturbulent motion
multi-minicomputer
non-radiative energy transfer
non-reactive tuberculosis
obgm
offwards
oil surfacer
old-line
original plate
Ortega y Gasset
peg-and-cup dowel
pentanitrine
platen knob
polestar
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principle factor
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pulse polaraulic selector
Quixote
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rotating joints
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saving of labor
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sea hedgehogs
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specific commodity rates
SSC valve
ST_music_groups-of-musicians
steam-air forging hammer
stew pan
subamendment
sugar moiety
surceasement
swagement
tamperers
there's no help for it
thumbs-downs
Trap-tree
tricolorous
unshimmering
upright pyramid pattern
varied mineral nutrient conditions
vertical loop-type en masse conveyor
white annealing