论文部分内容阅读
水稻优良品种的农艺性状在最近20多年发生显著变化,其最大推广面积和经济寿命受各类性状以及其他因素的影响也相应改变。通过对浙江省1981—2006年种植的176个年推广面积达66.7万公顷以上的品种的分析表明,产量潜力、品质以及抗病性对水稻优良品种的最大推广面积和经济寿命具有显著影响。对各性状对水稻优良品种最大种植面积和经济寿命变化的贡献在1981—1985年、1985—1996年、1996—2006年3个时期进行分解表明,抗病性、产量潜力和稻米品质分别是这三个时期中影响水稻优良品种扩散的首要性状。
The agronomic traits of fine varieties of rice have changed significantly in recent 20 years, and their maximum popularization area and economic life are also affected by various traits and other factors. Through the analysis of 176 cultivars of 667000 hectares planted in 1981-2006 in Zhejiang Province, it showed that yield potential, quality and disease resistance have a significant impact on the maximum popularization area and economic life span of fine varieties of rice. The contribution of each trait to the change of maximum planting area and economic life span of elite rice varieties in 1981-1985, 1985-1996 and 1996-2006 showed that disease resistance, yield potential and rice quality were The Three Traits Affect the Main Traits of Differentiation of Elite Rice Varieties.