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选用5个不同生态类型春小麦品种为材料,通过大田种植,研究其生长发育和灌浆特性对籽粒产量的影响。结果表明:农麦2号、宁春50号和宁春4号保持了较高的灌浆速率和持续时间,而龙麦33和青春38灌浆峰值出现时间较宁春4号晚,灌浆持续时间短,后期衰减较快,各品种间灌浆速率差异明显;产量方面,农麦2号产量最高,较宁春4号增产11.4%,与龙麦33及青春38间产量差异达到极显著水平。因此,在小麦新品种选育方面宜筛选全生育期适中,灌浆速率较快、灌浆稳定及持续时间长的品种。
Five spring wheat varieties with different ecotypes were selected as the materials to study the effects of growth and grain filling on grain yield through field planting. The results showed that Nongmai 2, Ningchun 50 and Ningchun 4 maintained relatively high filling rate and duration, but the peak filling time of Longmai 33 and Chu 38 was late than that of Ningchun 4 and the filling duration was short , The late decay faster, significant differences in grain filling rate among varieties; yield, the highest yield of Nongmai 2, compared with Ningchun 4 11.4% yield, and the output of Longmai 33 and youth 38 reached a significant level. Therefore, in the selection of new wheat varieties should be screened the whole growth period is moderate, faster filling rate, filling stable and long duration varieties.