水稻生产经历了高秆品种到矮秆品种 ,常规品种到杂交组合的转换 ,每一次换代 ,产量都大大提高。近年来随着科技进步水平的进一步提高 ,以及农业科技人员的攻关 ,推出了一批两系稻新组合 ,为了进一步摸清两系杂交水稻新组合的生长发育规律及高产栽培技术 ,积极稳妥推进小桥镇粮 Rice production has experienced high-stalk varieties to dwarf varieties, conventional varieties to hybrid combinations, each replacement, the output has been greatly increased. In recent years, with the further improvement of the scientific and technological progress and the tackling of agricultural science and technology personnel, a number of new combinations of two-line rice were launched. In order to further understand the growth and development of new combinations of two-line hybrid rice and high-yielding cultivation techniques, Small town food