印度有稻田4150万公顷,稻谷年总产量1170万吨,平均单产2.8吨/顷,按市亩计算,亩产190公斤左右,长期处于低产徘徊状况。特别是一些具有高产潜力的地区,稻谷生产也停滞不前。因而,印度的计划部门和农业科研单位高度重视水稻杂交优势利用技术的开发和应用,认为要保持与人口增长速度相适应的粮食年增长速度3%,发展杂交水稻是前景最佳的必由之路。 1989年开始起步,由印度农业研究联合会组织开展杂交水稻的强化研究。1991年后,得到联合国开发计划署和 India has 41.5 million hectares of paddy fields and its annual output of paddy is 11.7 million tons with an average yield of 2.8 tons / hectare. According to the market area of ​​mu, the output per hectare is about 190 kg, and the state of long-term low output is hovering. Particularly in some areas with high productivity potential, rice production has also stagnated. Therefore, the planning departments and agricultural research institutes in India attach great importance to the development and application of the technology for the superior utilization of rice hybrids. They think that to maintain the annual growth rate of the grain corresponding to the population growth rate at 3%, the development of hybrid rice is the only way to have the best prospects. Beginning in 1989, the Indian Agricultural Research Federation organized an intensive research on hybrid rice. After 1991, get the United Nations Development Program and