ããIn a hungry world rice is a staple food and China is the worldâs largest producer. å¨å½åçä¸çï¼æ°´ç¨»æ¯ä¸»è¦é£ç²®ãä¸å½æ¯ä¸çä¸æ大ç水稻产å°ã Rice is also grown in many other Asian countries, and in some European countries like Italy. äºæ´²å
¶ä»å½å®¶åä¸äºæ¬§æ´²å½å®¶æ¯å¦æ大å©çï¼é½ç§æ¤æ°´ç¨»ã In the rice-growing world, the Chinese scientist, Yuan Longping, is a leading figure. å¨æ°´ç¨»ç§æ¤çï¼ä¸å½ç§å¦å®¶
è¢éå¹³æ¯ä¸ä½éè¦äººå£«ã Yuan Longping was born and brought up in China. As a boy he was educated in many schools and was given the nickname, âthe student who ask questionsâ. è¢éå¹³çé¿å¨ä¸å½ãå°æ¶åï¼ä»å¨æå¤å¦æ ¡è¯»è¿ä¹¦ï¼å¾äºä¸ªâé®é®é¢çå¦çâçç»°å·ã From an early age he was interested in plants. è¢éå¹³ä»å°å°±å¯¹æ¤ç©æå
´è¶£ã He studied agriculture in college and as a young teacher he began experiments in crop breeding. ä»å¨å¤§å¦éç 究åå¦ãä½ä¸ºä¸ä¸ªå¹´è½»çæå¸ï¼ä»å¼å§äºä½ç©è²ç§çå®éªã He thought that the key to feeding people was to have more rice and to produce it more quickly. ä»æ³å
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³é®æ¯æ´å¤æ´å¿«å°ç产水稻ã He thought there was only one way to do this â by crossing different species of rice plant, and then he could produce a new plant which could give a higher yield than either of the original plants. ä»è®¤ä¸ºï¼å¯ä¸çåæ³æ¯ä½¿ä¸åç§ç±»ç水稻æ交ï¼è¿æ ·å°±è½äº§çæ¯åå
ä»»ä½ä¸ç§æ°´ç¨»äº§éé½è¦é«çæ°åç§ã First Yuan Longping experimented with different types of rice. é¦å
ï¼è¢é平对ä¸åç§ç±»ç水稻è¿è¡è¯éªã The results of his experiments were published in China in 1966. Then he began his search for a special type of rice plant. 1966å¹´ï¼ä»çç 究ææå¨ä¸å½å表ï¼æ¥çï¼ä»å¼å§å¯»æ¾ä¸ç§ç¹æ®ç稻ç§ãIt had to be male. It had to be sterile. è¿ç§ç¨»ç§å¿
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é¡»æ¯ä¸ç»æçã Finally, in 1970 a naturally sterile male rice plant was discovered. æåï¼å¨1970å¹´ï¼ä¸ç§å¤©ç¶çéå¿ä¸è²ç¨»ç§è¢«åç°ï¼è¿æ¯ä¸ä¸ªçªç ´æ§çåç°ã This was the breakthrough. Researchers were brought in from all over China to develop the new system. The research was supported by the government. å
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们被å¬éå¨ä¸èµ·å¼åæ°ç水稻ç§ï¼ç 究å¾å°äºæ¿åºçèµå©ã As a result of Yuan Longpingâs discoveries Chinese rice production rose by 47.5 percent in the 1990âs. ç±äºè¢éå¹³çåç°ï¼ä¸å½ç水稻产éå¨20ä¸çºª90年代å¢é¿äº47.5%ã There were other advantages too. 50 thousand square kilometers of rice fields were converted to growing vegetables and other cash crops. æå
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ç»æµä½ç©ã Following this, Yuan Longpingâs rice was exported to other countries, such as Pakistan and the Philippines. è¿é¤æ¤ä¹å¤ï¼è¢éå¹³ç å¶ç水稻è¿åºå£å°å·´åºæ¯å¦åè²å¾å®¾çå½å®¶ã In Pakistan rice is the second most important crop after wheat and will be grown in many parts of the country. å¨å·´åºæ¯å¦ï¼æ°´ç¨»æ¯ç»§å°éº¦ä¹åç第äºç§æéè¦çä½ç©å¹¶å°å¨è®¸å¤å°æ¹ç§æ¤ã The new hybrid rice has been developed by the Yuan Longping High-tech Agricultural Company of China. ä¸å½è¢éå¹³é«ç§æåä¸å
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æ交水稻ã Its yield is much greater than the yield of other types of rice grown in Pakistan. è¿ç§æ交水稻ç产éè¿é«äºå·´åºæ¯å¦å
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