冬小麦叶片绿度时空变异特征研究

Study on spatio-temporal variability of green degree in winter wheat leaf

摘要: 应用地统计学方法测定分析海河低平原区农田冬小麦关键生育期叶片绿度时空变异特征结果表明，冬小麦叶片绿度时间变化趋势为拔节期<孕穗期<抽穗期<灌浆期；各生育时期叶片绿度在180m*720m空间存在变异性，其相关距离为145.4～320.0m；块金效应占各自总方差的25%～79%，经验半方差可用球状模型模拟。

Abstract: The spatio-temporal variability of green degree in winter wheat leaf of Hai River Lower Plain was studied using the method of geological statistics.The results show that the temporal variability trend of green degree is heading stage