【摘要】 为了解不同弱春性小麦品种归一化植被指数(NDVI)与叶绿数相对含量(SPAD)的动态变化,以河南省农科院区试试验田的小麦品种为试验材料,对不同品种的NDVI、SPAD值以及二者的相关性进行了研究。结果表明,不同品种之间SPAD值的变化趋势基本一致,后期SPAD值均迅速下降。其中,豫麦34下降的最少,西农9718下降的最多。不同品种间NDVI的变化具有明显的一致性,豫麦34在拔节到灌浆期间NDVI值的变化幅度最小,且产量最高;不同时期SPAD与NDVI之间均有极显著的相关性。更多还原

【Abstract】 In order to study the relationship between NDVI values and SPAD readings in different weak-spring wheat varieties,the varieties in the regional trials of Henan Academy of Agriculture Sciences were used to investigate the NDVI and SPAD,the results showed the SPAD readings is consistent in different varieties and the drop of SPAD is rapid at the late stage,the SPAD drop of variety Yumai34 is the least and variety Xinong9718 is the most;the NDVI values of different varieties is obvious consistent,the change of NDVI values of variety Yumai34 is the least and its yield is the highest;NDVI values and SPAD readings of wheat are significantly correlated in different growth stages.更多还原