时间:2019-01-30 作者:英语课 分类:农业与发展


英语课

AGRICULTURE REPORT - Integrated 1 Pest Management
By Mario Ritter


Broadcast: Tuesday, February 22, 2005


I'm Gwen Outen with the VOA Special English Agriculture Report.


The use of pesticides 3 was an important part of the "Green Revolution," the movement that changed modern agriculture. Poisons can kill crop-eating insects, unwanted plants and harmful fungi 4. But these chemicals can also spread into the environment and kill helpful organisms.


Integrated pest management looks for a combination of methods to solve problems or prevent them.


Controlling pests starts with identification 5. Some kinds of insects, for example, look very similar. It is important to find out exactly what kind of pest is causing the damage and how much it has developed.


This first step can help farmers make other decisions. For example, no action may be needed if the problem is minor 6. Or, chemical treatments may not be needed if other methods can do the same job.


The University of California has had a Statewide Integrated Pest Management Program since nineteen seventy-nine. Experts have created guidelines 7 that can help farmers create crop protection plans.


A good way to understand how these guidelines work is to look at a pest management program for a single crop. For example, alfalfa is an important food for farm animals, but also a target of many pests.


Alfalfa fields can support many biological controls. These are helpful insects and organisms that attack pests. If pesticides are needed, they must be chosen carefully. Use of the wrong poison will destroy helpful organisms and permit other pests to move in. Birds can also serve as important biological controls.


The way alfalfa is harvested can have a big effect, too. Harvesting parts of a field at different times can limit the spread of pests. Keeping a border of unharvested alfalfa by open water can also help.


Developed nations are the largest users of pesticides. But the Food and Agriculture Organization says the pesticide 2 market in those countries is slowing or shrinking. The United Nations agency says several countries have set up programs to reduce pesticide use because of environmental concerns.


Today, many agriculture departments at universities teach integrated pest management methods.


Internet users can learn more about the Statewide Integrated Pest Management Program at the University of California at ipm.ucdavis.edu. Or you can find a link at www.unsv.com.


This VOA Special English Agriculture Report was written by Mario Ritter. I'm Gwen Outen.



a.整合的,完整的
  • A fully integrated low phase noise LC voltage controlled oscillator (VCO) is presented.介绍了一种全集成的LC压控振荡器(VCO)的设计。
n.杀虫剂,农药
  • The pesticide was spread over the vegetable plot.菜田里撒上了农药。
  • This pesticide is diluted with water and applied directly to the fields.这种杀虫剂用水稀释后直接施用在田里。
n.杀虫剂( pesticide的名词复数 );除害药物
  • vegetables grown without the use of pesticides 未用杀虫剂种植的蔬菜
  • There is a lot of concern over the amount of herbicides and pesticides used in farming. 人们对农业上灭草剂和杀虫剂的用量非常担忧。 来自《简明英汉词典》
n.真菌,霉菌
  • Students practice to apply the study of genetics to multicellular plants and fungi.学生们练习把基因学应用到多细胞植物和真菌中。
  • The lawn was covered with fungi.草地上到处都是蘑菇。
n.视为同一,证明同一,确认
  • He's made a formal identification of the body.他正式确认了死者身份。
  • We should have identification card on the person when we go out.我们外出时应随身携带身份证。
adj.较小(少)的,较次要的;n.辅修学科;vi.辅修
  • The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
  • I gave him a minor share of my wealth.我把小部分财产给了他。
n.指导方针,准则
  • The government has drawn up guidelines on the treatment of the mentally ill. 政府制订了对待精神病人的指导方针。
  • Planners seem a little uncomfortable with the current government guidelines. 规划师似乎不太接受现行的政府指道方针。
学英语单词
ahemeral days
arbitrary-function generator
beam intensity distribution
beginning of conversation
calorie small
can you feel my world
carboxylic acrylonitrile butadiene rubber latex
cargo winch
champenize
chlorvinyldichloroarsine
chrome-manganese-silicon alloy steel
chromospheric eruption
cioteronel
coaminopherase
compilation order
computer main frequency
corporate group
corsse
cross-section ionization detector
cube farm
decade band
decentralised
deep trades
deformable raft
denounc't
diphthongise
do what one is capable of
dynamic geomorphology
electronic specific heat
emiss
feather picker
financial supervision
fire resistant paint
genus pezizas
get a patent on
get robbed
go with
Gran Colombia
grenade throwers
gyro-TWT
hanson
harebin
have one's bread buttered for life
highly-academic
insulinization
interference inversion
It's a small world.
large rock mass
lethrinus variegatus
linguistic description
lowest normal low water
Malvastrum coromandelianum
mangan-Rockbridgeite
manzanar
medium-intensity approach light system
mendigo
metranemia
Moorhusen
nag screens
oceanite
patholinguistics
patripassianism
persuing
phenanthrine
photopolymerization system
phototroller
project into
proofreadings
public decision making
pulse-power breakdown
pump power input
pyruric
Rami nasales anteriores laterales
range of mountains
rated revolutions
rheticus
risic acid
Réclère
self-blinded
separated layer fertilization
sexual chemistry
shrieved
shrinking and thinning
siphonuli
smallness of cornea
sokoloff
Spinoolivary
star cross
stowing machine
subclavial
tabp
temperature anomaly
tethery
time working day
time-life
transmitter frequency tolerance
u-verse
usuals
walking bosses
water discipline
wow us
Zhanay