For this reason, farmers plant rice varieties that carry genes for resistance.

为此，农民种植携带耐抗性基因的大米品种。

Breeding work is a technique to develop new rice varieties, favourable to the increase of agronomical or qualitative grain.

育种工作是一种培育新的水稻品种的技术，有利于提高农艺性或水稻品质。

A) Cultivating ideal salt-resistant rice varieties.

a) 培育理想的耐盐水稻品种。

[Ben] Breeding works by crossing two different rice varieties with favourable attributes, in the hope of a new variety which carries both of those characteristics.

育种是通过杂交两个具有有利属性的不同水稻品种，希望能培育出兼具上述两种属性的新品种。

A crop scientist at Hunan Agricultural University, Professor Yuan developed hybrid rice varieties that increased crop yields over 20 percent.

湖南农业大学作物科学家袁教授培育出杂交水稻品种， 使作物产量提高了 20% 以上。

I spent several hours yesterday at the Agricultural Rice Institute talking with the experts there about how they are using software technology to sequence different rice varieties.

昨天在农科院，我就花了好几个小时同那里的专家们讨论怎样运用软件技术来给不同的水稻品种进行排列。