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
2-KGA
Abong
angstful
annual report
armoured boat
automatic radar plotting aid (arpa)
axis of stress
backwater gate
banking interface
barrier model
be poorly mounted
be swimming in
beni abbes
body centred cubic alloy
cheiracanthium insulanum
circumpacific volcanic belt
closening
coherence distance
collar of shaft
confectio
Cospicua
cynopodous
dark pool
diaphanes lampyroides
dice run
dinky
dockage sieve
electronic deception
electrophoresed
enamellings
end sill corner plate
extension project
extractable acid
fdng
fibre reinforced material
flare stack ignition device
gas scintillator detector
glycinamide ribonucleotide
go apeshit
graphics string
high performance real-time application
high-tension room
Highbury
hot aggregate bin
HVDC system control
hydrocarbylidyne
hydroxy-palmiton
i-stad
improvement of land
in-bond
integrated management program
king's cake
land-louper
laser safe level
lateral ligaments of bladder
lepiotoid
leukodystrophy
line jack
lunar walking machine
mangily
manyons
marquee select
master communication center of railway whole administration
mountain chestnut soil
newbee
noncircular symbol
nondisparagement
nonsedative
oogy
original type
overcast (ovc)
overlay accuracy
panelectroscope
partially-inverted file
pc1600 ddr sdram
pearl fish
PF3T
pimpy
pluticasone
polynomial game
port risk
primary construction
prionodont
protected sol
provostal
rapidcads
salsola kalis
sand-grass
scortations
standard for acceptance
straight shaft
stridulation mechanism
strongylote
Tana, Lake
theotaurine
thermomagnetic coversion
track sheet
true value of seeds
under-bid
vinyl perchloride adhesive solution
xanaxes
zomer