| 1. | The task , admits robert zeigler , irri ' s director , is daunting , and will take ten years or more
Irri主管承认，这项工程是极困难的，可能要持续10年以上之久。 |
| 2. | 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
国际稻米研究协会科学家怀疑通过精耕细作和采用传统的同类杂交已经无法提升产量。 |
| 3. | 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
Irri的科学家们怀疑，采用更好的耕作办法和传统杂交手段培育的新品种，不能够增加产量。 |
| 4. | 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
Irri的科学家们怀疑通过采用更有效的耕作方法或者采用杂交培育的种子来生产足够多的粮食的可能性。 |
| 5. | The results showed that the genetic distance between yungui indica and south china indica was the biggest ( 6 . 3451 ) and that between korea indica and irri indica the smallest ( 2 . 9141 ) among all 15 genetic distances of 6 ecotypes
结果表明，云贵籼和华南籼之间的遗传距离最大，为6 . 3451 ，韩国籼与irri灿之间的遗传距离最小，只有2 . 9141 。 |
| 6. | This paper analyses the factors that influence efficiency of pipeline system for sprinkler irri - gation , under condition of changing existing low pressture pipeline irrigation system into sprinkler irri - gation system
就井灌区低压管道输水灌溉工程改造成喷灌工程后，对影响喷灌管路系统效率的因素进行了分析，给出了其管路系统效率的计算公式。 |
| 7. | 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
通过改进耕作方法或者应用传统杂交得到的新品种可将产量提高，但国际水稻研究所的科学家怀疑能否提高到需要的水平。 |
| 8. | 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
国际水稻研究所的科学家满腹疑虑，即使通过更佳的田间管理或播种传统杂交而来的新品系未必再能大幅度提高作物产量。 |
| 9. | 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
国际粮食研究所的科学家们怀疑人们还能通过提高种植技术和采用传统杂交技术产生的新稻种来提高粮食产量，以便满足需求。 |
| 10. | Abstract : this paper analyses the factors that influence efficiency of pipeline system for sprinkler irri - gation , under condition of changing existing low pressture pipeline irrigation system into sprinkler irri - gation system
文摘:就井灌区低压管道输水灌溉工程改造成喷灌工程后，对影响喷灌管路系统效率的因素进行了分析，给出了其管路系统效率的计算公式。 |
