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试验对先玉335、郑单958、吉单198、农华101 4个玉米品种在不同种植密度下的子粒灌浆速率及产量进行对比分析。结果表明:不同玉米品种灌浆速率曲线不同,在9万株/hm2种植密度下“先玉335”子粒灌浆效率最高。在相同灌浆持续期内,9万株/hm2的种植密度下,“先玉335”群体子粒产量高于其他3个品种。相同种植密度与灌浆持续期下,灌浆速率的高低决定了子粒群体产量。试验中“先玉335”各项产量指标较优,利于提高半干旱地区玉米产量。
Experiments were conducted to compare the grain filling rate and yield of four maize cultivars, Xiangyu 335, Zhengdan 958, Jidan 198 and Nonghua 101 under different planting densities. The results showed that the filling rate curves of different maize cultivars were different. Under the planting density of 90 000 plants / hm 2, the grain filling efficiency of “Xian Yu 335” was the highest. Under the same grain filling duration, the yield of grain of “Xianxu 335 ” group was higher than the other three varieties under the planting density of 90,000 plants / hm2. Under the same planting density and grain filling duration, the grain filling rate determines the yield of the grain population. Test “Xian Yu 335 ” various yield indicators better, help to improve corn yield in semi-arid areas.