AGB(aboveground fresh biomass)is one of the most important parameters of the crop condition monitored with remote sensing.Hyper spectrum remote sensing with the fine spectrum information becomes the efficient method estimating the vegetation AGB.The research was conducted in Xinjiang,the largest cotton planting region of China.The paper analyzed the correlation between the cotton AGB and reflective spectrum and the first derivative spectrum,and the variation coefficient of the waveband reflectance.According to the analysis above,all of 23 parameters,including the hyper spectrum reflectance,the first derivative spectrum parameters and normalization vegetation indexes,were established. And then the estimation models on cotton AGB of relaxing and compact canopy type were established and tested respectively.The tested results showed that F 901 ,[901,502],[901,629],[901,672]among the reflective spectral parameters and D 525 ,D 956 ,D 1019 ,D 1751 among the first derivative spectral parameters had the homogenous effect on different cotton canopy types,and the determination coefficients of the models above all arrive at the significant level of 0.99 confidence interval.At last,the tested results of the homogeneity models for different canopy types indicated the parameters of[901, 502],[901,629],[901,672]have more satisfying veracity than others,and the relative errors are as low as 17.0,16.3 and 16.7%correspondingly;in contrast,the estimation veracity of the first derivative spectrum parameters of single waveband is low.
BAI Jun-huLI Shao-kunWANG Ke-ruSUI Xue-yanCHEN BingWANG Fang-yong
针对食用菌工厂化生产中食用菌产量和质量不高的情况,分析了食用菌工厂化生产管理的现状,得出实时获取在制品状况、生产进度和生产过程监控的需求,提出基于RFID(Radio Frequency Identification)技术的食用菌工厂化生产管理信息系统解决方案,采用三层架构,包括业务管理层ERP、生产过程管理系统和RFID应用层。设计出生产管理信息系统的主要模块结构和功能,包括有:基础数据管理模块、采集的数据处理模块、RFID管理模块、生产过程控制模块、在制品管理模块、系统扩展接口等。最后对食用菌工厂RFID应用方案进行了比较分析。
