Research Progress of Crop Seedling Growth Nondestructive Monitoring Technology

Crop seedling growth is a complex physiological and biochemical metabolic process，seedling growth have direct influence on crop biomass production，economic output，nutritional quality，and safety.The monitoring of growing status in crop seedlings have guidance for crop fertilizer，water management，pest and disease control，therefore it′s the key point of precision agriculture and digital agriculture.In this study，the progress of growing status monitoring technologies in crop seedlings were deeply reviewed from three aspects，which included crop morphology，nutrimental component testing，pest and disease diagnosis.The applications of various nondestructive monitoring technologies for crop seedling，such as machine vision，transmission optical detection，reflectance spectroscopy，and fluorescence measurement，were described in details.Furthermore，its current problems and developments in future were also discussed.Many experts from broad and abroad who study the nondestructive testing techniques for crop had more indepth research and application，but currently the main emphasis of a single information access and analysis，the future will be more emphasis on multisource，multiscale data acquisition and morphology，nutrients，integrated pest access to information，information integration and comprehensive evaluation of crop growing seedlings will be research priorities.Seedling growing crop monitoring and precision agriculture data will be more linked to the farming operation to provide sensor information，the formation of intelligent agricultural construction，tuning，cultivation，management decisionmaking system.