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为探明自然风灾“布拉万”台风袭击后,玉米倒伏对根系和产量以及倒伏后绑扶的效果,测定了根系干重、产量以及产量性状。结果表明:郑单958和先玉335两个品种倒伏与未倒伏之间根系干重无明显差异;从根系干重平均值来看,郑单958根系干重较先玉335高100%,并且二者之间差异达到显著水平。2个品种在3个试验地不同倒伏程度减产幅度为0.5%~21.3%,平均减产为10.0%。玉米倒伏后不绑扶较倒伏后帮扶产量低5.3%,但二者之间差异不显著。
In order to find out the effects of natural lodging and yield and lodging after lodging, the root dry weight, yield and yield traits were measured to determine the effects of natural catastrophes and typhoons after “Brawan” attack. The results showed that there was no significant difference in root dry weight between the two cultivars Zhengdan 958 and Xian-yu 335, and the root dry weight of Zhengdan 958 was 100% higher than that of Xian-yu 335 The difference between the two reached a significant level. The yield reduction of 2 cultivars at different degrees of lodging in 3 plots ranged from 0.5% to 21.3% with an average yield reduction of 10.0%. After lodging, the yield of corn did not increase by 5.3% after lodging, but the difference between the two was not significant.