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。
学英语单词
adande
air supply volume per unit area
angle rest
antileukemics
astro-spas
backup method
bank slope
bleach plant control
boresight camera
brace game
Bupleurum malconense
butene rubber
caddas
calling the queue package
capecchi
capital plus warrant
carpathias
chrysocollas
clustered well template
coaldale
confidence bound
Cover Flow
cow-parsleys
crossed money order
cryogenic grinding
demonstrate for
derai
drainage hopper
eczematogenic
examining endoscope
exponential model
export file name
field ionizaiton gage
filler item
fluted cylinder
Gernnerich's treatment
give a different reading to
grain tears
green vegetables
handing off
have a plum in one's mouth
head nurse
Hessen, Land
hide curing
horse-drawn expanding harrow
house-raising
isoplastie
jiddi
Kid Cudi
kittenlike
kobaltwismutherz (cheleutite)
livelyhood
livingry
Lordville
meslier
metrolinks
moria
Morolong
multipass drier
Murodania
nervos-
nolbert
off-axis system
out-of-position welding
overpraises
panangiitis
patented article
pauli spin susceptibility
pavement artists
per capita gnp
plenum space
Pobiti Kamǔni
Pravoberezhnyy Rayon
pretiosity
pull-out bond test
rear-end collision
residual charge method
rheoencephalography
rheumatic diathesis
roesleria hypogaea th man et.passerini
Scopulimorpha
seal cutting
sewage piping system
shipboard
single thread hob
single-phase alternating current
skillet corn bread
sliver separator
snowpacks
soil catena
spandrel arch
spanish teas
sulci palpebralis superior
superhigh pressure technique
switch-ivy
Tubulanidae
unnoticing
volume chart
webinars
wideband coherent light modulator
yokosukaite (nsutite)