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
anesthesiologies
auto start job entry
b4k4
balanced load (muller 1950)
barsine albidorsalis
Bethell('s) process
bid someone go whistle
bite-block
bundle along fibre
cadmoindite
cellotape
centerie
compounder
confidence and pride
congracilaria babae
consition
constructional plant
coprostane
couple-beggars
Daganzo de Arriba
deem A to be B
depreciation-appropriation method
depressor substance
distribution ratio
domestic bill
doulateral winding
dull grain
eaves cornice
electro-optic material
EMACC
executioners
facsimile reproduction
fall one's feet
female-biased
feminities
gentianin
gleitmen
grab rail
half bridge
head blastema
honey-do lists
hordei fructus germinatus
inert-gas-shielded arc welding
inlaid lacquer ware
interstitious
J-pop
kresoxim-methyl
Kueng
late fee
lens micrometer
long past due
loupegarth
maxicomputer
medieties
meissners
motacilla tschutschensis simillima
moving string
neuroimagers
Neuron efferens
non-consumptions
not give sb. the time of day
nucleus medialis thalami
on the fiddle
order Charales
outgushes
over-browsing
pacing response
penalty for delay
pick up head
pilot hand wheel
plate meristem
Plicae semilunares coli
premolars
radiometric age dating
Rhacomitrium aciculare
rice leaf roller
rightful notice
rim ridge
rose gum
rotating load
sales coverage
scatter coating method
seed gathering machine
sky-wave synchronized loran
sound-proofing of houses
spivved
subjective expected utility model
synthetic standard sample
taize
tegs
terping
tinea sabouraudi
tomies
transition strategy
Tridentinae
two-dimensional vector
two-man diving bell
underhand stoping
USE-NET
wire breakage lock
Zellendorf