Study on Relationship between Tobacco Canopy Spectra and LAI
N nutrition is one of the most important limitation factors for crop growth and yield. Precise and timely monitoring and detection of crop N nutrient conditions is necessary for improving the efficiency of N nutrition using and crop management, reducing environmental pollution caused by over nitrogen fertilizer application. In this paper the canopy reflectance spectra during the whole growth period on tobacco field plots treated with different nitrogen levels were periodically and continually measured. LAI of tobacco of several important growth periods was meanwhile measured. The results showed that tobacco canopy spectral reflectance of different growing periods changed regularly with the increase of nitrogen fertilizer application. The canopy spectral reflectance increased in 710~1000 nm, while decreased in 460~680 nm. There was high correlations between NDVI and LAI. The research supply theoretical foundation for tobacco N management.
Tobacco spectra LAI
Hongbo Qiao Weng Mei Yafei Yang Wang Yong Jishuai Zhang Yu Hua
College of information and management science, Henan agricultural university, P. R. China Sanmenxia Branch of Henan Tobacco Company, Sanmenxia, P. R. China
国际会议
南昌
英文
650-657
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）