基于遥感的东北地区水稻延迟型冷害动态监测

发布时间：2018-02-25 00:31

  本文关键词： 遥感 监测 作物 延迟型冷害 发育期 东北地区 水稻　出处：《农业工程学报》2016年15期 　论文类型：期刊论文

【摘要】：水稻延迟型冷害大范围准确的同步跟踪监测,可为提高稻米品质和产量提供帮助。在明确东北地区水稻种植区域和水稻低温冷害年的基础上,基于MODIS MOD13A2数据产品划分了东北地区水稻各发育普遍期植被指数判识指标的参考范围,构建了基于地理信息的水稻发育期模型,在此基础上制作了水稻静态发育期空间分布图,并以2009年5月24日和8月7日为例开展了东北地区水稻延迟型冷害动态监测的应用研究。结果表明:东北三省发生较大范围水稻延迟型冷害的年份有2002年、2003年、2008年和2009年,其中黑龙江省是水稻延迟型冷害的重灾区;EVI在水稻发育期判识中较NDVI更具优势;利用经度、纬度和海拔高度与日序的相关关系构建水稻发育期模型,推算无观测地区的发育期具有一定的可行性;在同一时间东北三省各地的水稻发育期分布推算结果的基础上,实现了2009年5月24日和8月7日东北地区水稻延迟型冷害动态监测,所得监测结果与2009年农业气象观测记录在时间和空间上有很好的一致性,监测结果正确。
[Abstract]:In order to improve the quality and yield of rice, the delay chilling damage can be monitored synchronously and accurately in a wide range. On the basis of defining the region of rice cultivation and the year of low temperature chilling injury of rice in Northeast China, Based on the MODIS MOD13A2 data product, the reference range of the identification index of the vegetation index in different stages of rice development in Northeast China was divided, and the model of rice development period based on geographic information was constructed. On this basis, the spatial distribution map of rice static development period was made. Taking May 24th 2009 and August 7th as examples, the dynamic monitoring of delayed chilling injury of rice in Northeast China was studied. The results showed that the years of large-scale delayed chilling injury occurred in Northeast China were 2002, 2002, #date鈪，

本文编号：1532360