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在不同种植方式下 ,对豫麦 18号、豫麦 2 1号、豫麦 4 9号、93中 6等 4个不同类型小麦品种的产量构成因素进行了研究。结果表明 ,等行距与宽窄行之间产量无明显差异 ,低播量、高播量下差异均达极显著水平。叶面积系数从开花到乳熟都呈下降趋势 ,只有 93中 6呈上升趋势 ,豫麦2 1号、豫麦 4 9号、豫麦 18号间无差异。豫麦 18号灌浆速度最快 ,豫麦 2 1号最慢 ,豫麦 4 9号和 93中 6相比 ,前者前期灌浆快 ,后者后期灌浆快 ,93中 6硝酸还原酶活性最高。豫麦 18号次之 ,豫麦2 1号第 3,豫麦 4 9号最低
Under different cropping patterns, the yield components of four different wheat cultivars, Yumai 18, Yumai 2 1, Yumai 49, 93 Zhong 6 were studied. The results showed that there was no significant difference between the width and breadth of the row spacing, and the difference was significant at the low seeding rate and the high seeding rate. The leaf area coefficient decreased from flowering to milky ripening, and only 93 of 6 showed an upward trend. There was no difference between Yumai 2 1, Yumai 4 9 and Yumai 18. Yumai 18 had the fastest filling rate, Yumai 2 1 was the slowest, Yumai 4 9 and 93 6, while the former had a faster rate of early filling and the latter had a faster filling rate. The activity of 6 nitrate reductase in 93 was the highest. Yumai 18 followed by Yumai 2 1 No. 3 Yumai 4 9 lowest