免费日韩片_欧美成人精品一区二区男人小说_国产乱码一区二区三区四区_国产精品国产三级国产aⅴ入口_成人看的污污超级黄网站免费_欧美一级在线免费观看_成人午夜免费无码福利片_国产乱人伦偷精品视频色欲_aaa少妇高潮大片免费看_国产精品1234_亚洲精品国产suv一区88_中文字字幕在线中文无码_精品亚洲区_午夜九九九_国产av国片精品jk制服丝袜_色综合亚洲_亚洲成av人片无码bt种子下载_欧美色就色_精品少妇的一区二区三区四区_男人用嘴添女人下身免费视频

New hybrid rice developed
By Cao Li (China Daily)
Updated: 2004-10-22 09:22

The drought-resistant rice needs 50 per cent less water than normal rice and can produce as much as 7,571 kilograms of rice per hectare, about the same as ordinary rice.

"We are to send it to the Ministry of Agriculture for final testing. Hopefully it will start being widely planted in 2006," said Luo Lijun, director of the Shanghai Agrobiological Gene Centre.

While crops drought-resistant rice have been around since ancient times, they are usually few and with low yield.

Drought-resistant rice occupies only 13 per cent of all rice fields in the world and one per cent in China.

However, the country is facing an increase in dry weather patterns.

In northern China, there is an average 60 per cent chance of spring droughts while south of the Yangtze River the odds are 40 per cent.

During summer, that number shoots up to 70 per cent in the Northeast, where autumn droughts are frequent. "The regional or seasonal droughts have greatly reduced rice production every year," said Luo.

The availability of water in China is about one quarter of the world's average, about 2,400 tons per capita, placing the country 109th in the world.

This lack of water results in losses of approximately 200 billion yuan (US$24 billion) every year.

Agriculture accounts for about 80 per cent of the total water usage, 70 per cent of that is rice. "We are hoping that drought-resistant rice will be widely planted to alleviate the country's serious lack of water," said Luo.

Experts said that the country's growing population will need about 3 trillion kilograms of rice per year by 2030. China now produces less than 2 trillion kilograms.

Close