歌词
This is the Agriculture Report.
这里是农业报道。
Irrigation systems can make a big difference
灌溉系统可以起到很大的作用
in agricultural production.
在农业生产。
Irrigation can also improve the lives of farm families.
灌溉也可以改善农民家庭的生活质量
However, the addition of water to the land or soil
然而，向土地或土壤中添加水
may cause problems in some areas.
可能在某些方面造成问题
A new study describes how irrigation water
一项新的研究描述了灌溉用水是如何进行的
can lead to an increase in malaria cases
会导致疟疾病例增加吗
that could last for ten years or more.
这可能会持续10年或更长时间
Malaria is spread by mosquitoes,
疟疾是通过蚊子传播，
the insects like to reproduce in standing water.
昆虫喜欢在静水中繁殖。
So when a dry area is irrigated,
所以当干旱地区被灌溉
the disease can appear and spread.
这种疾病会出现并传播。
Mercedes Pascual is a scientist at the University of Michigan.
Mercedes Pascual是密歇根大学的一名科学家。
She and her team studied areas in northern India
她和她的团队研究了印度北部地区
where irrigation systems were built over a number of years.
那里的灌溉系统建立了好几年。
They compared how malaria progressed with the spread of irrigation.
他们比较了疟疾是如何随着疾病的传播而发展的。
"What happens is that when you irrigate, there is more,
“当你灌溉的时候，会有更多的水，
in a sense, more breeding habitats for the mosquito."
从某种意义上说，这是蚊子更多的繁殖栖息地
She and the other scientist found
她和其他科学家发现
that after farmers began irrigating their crops,
农民开始灌溉庄稼后，
the risk of malaria rose sharply.
疟疾的风险急剧上升。
At first, her team thought maybe the number of cases rose
起初，她的团队认为病例数量可能会上升
because there was little effort to control the mosquitoes
因为在控制传播这种疾病的蚊子方面几乎没有做什么努力。
that spread the disease. But they were wrong.
但他们错了。
"In fact, we saw the opposite.
“事实上，我们看到的恰恰相反。
This transition stage was characterized not just
这个过渡阶段的特征不仅仅是
by heightened malaria risk,
疟疾风险增加，
but also by more intervention to control the mosquito vector."
而且还要通过更多的干预来控制蚊虫媒介。”
Even after the mosquito control efforts were in place,
即使在蚊虫控制措施到位之后。
the researchers found high rates of malaria
研究人员发现疟疾的发病率很高
continued for ten years or longer.
已经持续十年了。
Mercedes Pascual suggests that the irrigation project supervisors
Mercedes Pascual建议灌溉工程监工
need to work more on reducing places
我们需要在减少名额方面做更多的工作
where mosquitoes might reproduce.
蚊子可能在那里繁殖。
She also says health officials may need to try other methods of
她还说卫生官员可能需要尝试其他方法
malaria prevention that would work for long periods of time.
长期有效的预防疟疾。
"And what we are saying is that those measures have to be sustained,
“我们要说的是，这些措施必须持续，
and sustained and also planned for, for the long term."
并为长期而持续和规划。
In the words of the researchers,
用研究人员的话来说
irrigation offers considerable rewards in areas with low rainfall.
灌溉在降雨量少的地区提供了可观的回报。
But as Mrs Pscual and her team discovered irrigation
但是Pscual女士和她的团队发现了灌溉
also can bring years of high rates of malaria.
也会带来多年的疟疾高发率。
The only way to avoid the problem
避免这个问题的唯一办法是
is through better planning and control measures.
是通过更好的规划和控制措施。
A report on the study was published
该研究报告已被发表
in the Proceedings of the National Academy of Sciences
在《美国国家科学院院刊》上
of the United States of America.
美利坚合众国的。
And that's the Agriculture Report from VOA Learning English.
以上就是本期美国之音慢速英语农业报道的全部内容。
专辑信息
1.MadiDrop