基于SPAD值的木薯叶绿素含量预测模型  

A Model for Predicting Chlorophyll Content in Cassava Based on SPAD Values

作　　者：杨生红[1] 杨重法[1] 辛阳[1] 刘传军[1] 陈慧娟[1] 

机构地区：[1]海南大学农学院,海南海口570228

出　　处：《热带作物学报》2012年第3期509-511,共3页Chinese Journal of Tropical Crops

基　　金：海南省重点学科建设项目"木薯干物质生产与分配的生理生态研究"(No.Xkxm0811-09)

摘　　要：为了探讨木薯叶绿素含量的非破坏性快速测定方法,在测量叶片SPAD值、比叶面积和叶绿素含量的基础上构建通过SPAD值预测总叶绿素含量的数学模型。结果表明,叶绿素a对于SPAD值的贡献率大于叶绿素b;比叶面积和叶位显著影响SPAD值与总叶绿素含量的关系,在SPAD值预测总叶绿素含量的模型中导入比叶面积和叶位2个自变量可提高预测总叶绿素含量的精度;基于SPAD值、比叶面积、叶位预测总叶绿素含量的模型为C=-4.51+0.092 5 Spv+0.039 9 Sa+0.145 0(Lp)。In order to investigate a non-destructive and quick measuring method for chlorophyll content in cassava, a model for predicting total chlorophyll content that was based on SPAD values,specific leaf area, chlorophyll content was established. The results indicated that the influence of chlorophyll A to SPAD values was larger than chlorophyll B; specific leaf area and leaf position and SPAD values and chlorophyll content showed significant correlation; added specific leaf area and leaf position, the accuracy of the model for predicting total chlorophyll content was improved; based on SPAD values,specific leaf area and leaf position, the model for predicting total chlorophyll content was established as C=-4.51＋0.092 5 Sp＋0.039 9 Sa＋0.145 0 （Lp）.

关 键 词：木薯 叶绿素含量 SPAD值 比叶面积 叶位 模型 

分 类 号：S533[农业科学—作物学]