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1990年杂交稻的面积达2.3.892亿亩。过去推广较慢的省,近年快马加鞭;发展快的省又更上一层楼;南方杂交粳稻经过努力,己走出困境;北方杂交稻虽面临徘徊下降形势,也出现了新曙光。 1990年粮食总产虽已过4200亿公斤,但本世纪末总产要达5600亿公斤,“八五”末达4500亿公斤。为实现上述目标,杂交水稻1991年要发展到2. 5亿亩,1995年达2.8亿亩。当前的问题是:杂交稻种子积压多,需妥善解决;要处理好三系法、两系法育种的关系,长江流域缺乏更新组合;早稻组合的熟期及适应性还不够理想。
The area of hybrid rice in 1990 reached 2.3.892 million mu. In the past, the provinces that promoted slower growth in recent years were exaggerating; the provinces with faster growth went further; southern hybrid japonica rice had worked hard to get out of its predicament; and although northern hybrid rice was facing a dwindling situation, a new light appeared. Although the total grain output in 1990 exceeded 420 billion kilograms, the total output of this century will reach 560 billion kilograms and the end of the “Eighth Five-Year Plan” will reach 450 billion kilograms. In order to achieve the above objectives, hybrid rice will grow to 250 million mu in 1991 and 280 million mu in 1995. The current problems are: the backlog of hybrid rice and more need to be properly addressed; to deal with the three lines of law, the relationship between the two lines of breeding, the lack of an updated combination of the Yangtze River Basin; early maturity and adaptability of the combination is not ideal.