Research and Application of Non-Destructive Testing Diagnosis Technology of Tomato

摘要

This study developed a non-destructive, fast, simple nutritional diagnosis method to test the nitrogen status of tomato in the greenhouse. Field experiments were conducted during 2009-2010 at the Xiaotangshan Precision Agriculture Experimental Base, Changping District, Beijing. SPAD-502 was used to determine the leaves of tomato under different growth stages. The research results showed that chlorophyll and nitrogen contents of tomato were increasing with the increase in the quantity of fertilizer, and SPAD also increases gradually. SPAD values had a good correlation with chlorophyll contents of tomato leaves. In other words SPAD could be integrated to diagnose tomato nitrogen nutritional status of tomato.