基于SPAD的水稻氮素含量测量指标及模型研究  

Study on the Measurement Index and Model of Rice Nitrogen Content Based on SPAD

作　　者：徐梅宣 陈飞帆 彭效东 Xu Meixuan;Chen Feifan;Peng Xiaodong(School of Electronic Engineering,South China Agricultural University,Guangzhou 510642,China)

机构地区：[1]华南农业大学电子工程学院

出　　处：《现代农业装备》2019年第6期55-60,80,共7页Modern Agricultural Equipment

基　　金：广东省自然基金(2016A030310448);公益研究与能力建设(2016B020205003)

摘　　要：叶绿素相对含量(SPAD)与水稻氮素含量有较好的相关性,但田间叶片的SPAD值测量影响因素较多。本文分析了在不同生长期,不同氮肥胁迫下水稻植株的氮素敏感叶片的叶绿素值的测量影响因素以及随氮素水平变化规律,构建最佳水稻氮素测量指标,并建立叶绿素值与水稻氮素含量检测模型。研究成果可为建立水稻信息专家库及水稻在线施肥系统提供决策依据。There is a good correlation between SPAD and nitrogen content of rice,but there are many factors that affect SPAD measurement of leaves in the field.In this paper,the factors influencing the measurement of chlorophyll value in nitrogen sensitive leaves of rice plants under different growth stages and nitrogen stress were analyzed.The best nitrogen measurement index of rice was constructed。The model of chlorophyll value and nitrogen level of rice was established.The result can provide decision basis for establishing a rice information expert database and online fertilization system.

关 键 词：水稻 叶绿素计 最佳测量指标 回归分析 

分 类 号：P237[天文地球—摄影测量与遥感]