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
abyssal floor
acoustic particle size analyser
acutechniques
air suit
Arenigian Stage
barrooms
Bayes interval estimate
blanche b.
brings home the bacon
broken down rubber
bubble butt
Cape honeysuckles
certification of bargaining agent
cogent evidences
collet cam
colloidal chemistry
cosmos
device independent pixel
direct labor process
duplex redundancy
dytiscids
eggbert
ephemeris transit
etherin
everyman
expansion admixture
Federal Islamic Republic of the Comoros
fire door closer
fixed mould
free tree
fromage frais
fully distributed cost pricing
function room
gobain
hemofolin
imperial envoy
in-core inoization chamber
iodoestradiol
iridium(iv) oxybromide
irregular splitting
khoi-san
Komanda
like as
liquid poison injection pump
master timing pulse
maximum chucking diameter
metamorphic phase
mixy-matchy
motion-study
nonenal
nonstandard logic
nontraumatic
oblique vein of the left atriums
oldening
optimum
order of the british empire
oyster dressing
pentafluoro-propionyl-imidazole
percipiently
perico
Phlong
phosphatidal-etanolamine
please
reserved array
rivet cutting blowpipe
rumor-mongering
scoop circulating water system
scormin
self-righting type
sense of polarization
setaria italica stramineofructas
ship gate
single-range indicating instrument
siuier
skatings
slide trumpet
sliding frame saw
Soria, Prov.de
Spasmamide
spatous
split mold
spring disease
statutory threshold
system of note issue
tomah
toral
tribuluss
turmail
two cycle principle
uhde
v-bombers
vee-type diesel engine
vegetative shoot
Verkhnebakanskiy
volatile treatment
walker type straw rack
wigwag signal
wulfgar
Yamakuni-gawa
yellow-crowned
zinc-rich primer