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为了探讨不同类型小麦品种倒伏后减产的原因,对其倒伏后产量结构的变化进行研究。结果表明,丰产型品种拉1453-3倒伏后减产的原因主要是由于穗粒数下降和穗粒重降低,导致其产量下降显著;抗旱型品种克旱19倒伏后减产主要是由于穗粒数减少造成的;喜肥类型品种龙麦26和龙辐麦02-0958,倒伏对其产量三因素的影响微弱,致使产量下降不明显。
In order to investigate the reasons for different types of wheat varieties after lodging and yield reduction, the changes of yield structure after lodging were studied. The results showed that the main reason for yield reduction after high yielding variety La 1453-3 lodging was due to the decrease of spike grain number and spike grain weight, Resulting in; hi-type varieties Longmai 26 and Longfu Mai 02-0958, lodging on the impact of its three factors of production is weak, resulting in decreased yield was not obvious.