豫麦 4 8号是利用杂交育种理论 ,采用水旱交叉选择而育成的旱地小麦新品种。多年试验结果统计分析和生产实践表明 ,该品种丰产性突出、稳产性较好 ,是一个适应性较好的旱地小麦新品种。对其成产因素进行灰色关联度分析 ,结果表明 :对产量影响最大的因素是穗粒数 ,其次为单位面积穗数 ,因此 ,豫麦 4 8号高产栽培的主攻方向应是保持一定单位面积穗数的基础上注重每穗粒数和千粒重的提高 Yumai 48 is a new dry-land wheat cultivated using crossing breeding theory and crossing with water and drought. The results of many years of statistical analysis and production practices show that the variety of high yield outstanding, stable and good performance, is a better adaptability of new dryland wheat varieties. The results showed that the most influential factor on yield was the number of grains per spike, followed by the number of spikes per unit area. Therefore, the main direction of high yielding cultivar Yumai 48 should be to maintain a certain unit area Spike based on the number of grains per head and grain weight increase