The task , admits robert zeigler , irri 's director , is daunting , and will take ten years or more . But the potential is enormous .

irri负责人罗伯特齐格勒承认此项任务十分艰巨，将需要十年以上的时间才能完成，不过潜力是巨大的。

On december 4th the consultative group on international agricultural research ( cgiar ) , a network of research institutes of which irri is a member , unveiled a series of schemes intended to protect crop yields against the ill effects of global warming .

世界农业研究咨询小组，包括国际水稻研究所在内的研究所网络，12月4日公布了一系列方案，这些方案是为了应对全球变暖给粮食产量所带来的不利影响。

Scientists at the international rice research institute ( irri ) doubt it is possible to improve productivity as much as is needed through better farming practices or the adoption of new strains derived from conventional cross-breeding . Instead , they aim to improve rice yields by 50 % using modern genetic techniques .

国际水稻研究所（irri）的科学家认为，单靠优化耕作方式或采用常规杂交技术培育的新品种不可能进一步增加产量，相反，他们打算利用现代遗传修饰技术使水稻增产50%。

Developing countries will need to boost agricultural investment to $ 209 billion a year , up 47 % from the annual average between 1997 and 2007 , to meet growing demand for food , the report from the asia society and the irri says .

亚洲协会和国际水稻研究所的报告指出，发展中国家需要将农业投资每年增加至2090亿美元，较1997至2007年每年平均增长率高出47%，以满足人们对食品不断增加的需求。

Moreover , technological improvements are still pushing through the neglected soil . Mr zeigler reckons irri has enough tinkerings in the pipeline to increase yields by one or two tonnes a hectare .

而且，技术的进步仍然在改善被忽略的土地，mrzeigler估算在国际农业发展基金会有足够的措施和途径来增加产量－每公顷增加一或者两吨。