大力推广优质稻米品种,是当前水稻生产的迫切需要。优质稻的米质虽主要决定于其内在的遗传特性,但与栽培技术是否合理也有相当大的关系。因此,栽和优质稻不可完全沿用常规栽培技术,而应有所改进,以确保优质稻优质高产。主要应抓好以下几条:1、适时适量施用氮肥。据研究,水稻在前期合理施肥的基础上中期不再施用氮肥,可以使第二次枝梗数大大减少,从而大大提高结实率,并提高稻米品质。孕穗期与齐穗期施用少量氮肥,能增加单位叶面积的碳素同化率,提高结实率,减少腹自和心白米,显著改善稻 Vigorously promoting high-quality rice varieties is an urgent need for current rice production. Although the quality of high-quality rice mainly depends on its inherent genetic characteristics, but with the cultivation of technology is also a reasonable relationship. Therefore, planted and high-quality rice can not completely follow the conventional cultivation techniques, but should be improved to ensure high-quality high-yielding rice. The main should do a good job in the following few: 1, appropriate amount of nitrogen fertilizer application. According to the study, no fertilization of rice on the basis of the previous mid-term application of nitrogen fertilizer, can make the second branch number greatly reduced, thereby greatly improving the rate of seed and improve rice quality. At the booting stage and heading stage, the application of a little nitrogen fertilizer can increase the carbon assimilation rate per unit leaf area, increase the seed setting rate, reduce the white self-centering white rice and significantly improve the rice