基于生物量的水稻叶片主要几何属性模型研究  

Main Geometrical Parameter Models of Rice Blade Based on Biomass

作　　者：刘岩[1,2] 陆建飞[2] 曹宏鑫[1] 石春林[1] 刘永霞[1] 朱大威[1] 孙金英[3] 岳延滨[4] 魏秀芳[1] 田平平[5] 包太林[5] 

机构地区：[1]江苏省农业科学院农业资源与环境研究所/数字农业工程技术研究中心,南京210014 [2]扬州大学农学院,江苏扬州225009 [3]西南大学资源与环境学院,重庆400715 [4]南京农业大学农学院,南京210095 [5]长江大学农学院,湖北荆州434025

出　　处：《中国农业科学》2009年第11期4093-4099,共7页Scientia Agricultura Sinica

基　　金："十一五"国家"863"专项课题(2006AA10Z230);"十一五"国家"863"子课题(2006AA10Z219-1);江苏省农业科技自主创新基金项目(CX1077115);江苏省博士后基金(5910907);江苏省农业科学院博士后基金(6510733)

摘　　要：【目的】构建基于生物量的水稻叶片主要几何属性模型,为水稻株型设计与调控提供理论依据。【方法】以两优108、86优8、南粳43及扬稻6号为材料,设置品种、氮肥与密度田间试验,观测水稻主茎不同叶位叶片长度和宽度,分析了水稻主茎叶片长和宽的关系、比叶重(SLW)随叶位的变化规律,以及水稻叶片干重与叶长和叶宽的关系,构建基于生物量的水稻叶片主要几何属性模型。【结果】叶长与叶宽的关系可用幂指数方程表达,比叶重随叶位呈二次曲线变化。采用独立的试验资料检验模型,主茎叶片叶长、叶宽模拟值与实测值的根均方差(RMSE)分别为2.55和0.06cm。【结论】几何属性模型可较好地模拟不同生长条件下水稻主茎不同叶位叶片的主要几何属性,为生长模型与形态结构模型的结合奠定了基础。[ Objective ] To develop a geometrical attribute model of leaf blade based on dry weight （DW）, which is the output of growth model. [Method] Firstly, the model was deduced from the relationship between biomass and geometrical parameters of leaf theoretically. And then, based on observations on leaf length and leaf width of different leaf positions （LP） on main stems under different nitrogen rates and densities with four eultivars （LY108, 86Y8, NJ43, YD 6）, the change patterns of specific leaf weight （SLW） with leaf position and the relationship between leaf length and width of rice on main stem were analyzed. [Result] The results indicated that the relationship between leaf blade length and width could be expressed in power function, and SLW changed with the leaf position （LP） in quadratic equation. [ Conclusion ] The validation of the model with independent experimental data under different nitrogen rates and densities with four cultivars showed that the RMSE of dynamic leaf length and leaf width on main stem were 2.55 cm and 0.06 era, respectively, and the model could be used in simulating the geometrical characteristics of rice leaf blade on main stem under different growth conditions.

关 键 词：水稻 生物量 叶长 叶宽 比叶重 

分 类 号：S511[农业科学—作物学] TP751[自动化与计算机技术—检测技术与自动化装置]