Abstract:

A method of measuring rice leaf area index based on image processing technology was studied. An innovation based on features of object was presented to automatically estimate percent ground cover of rice from digital image processing technology and then obtain rice leaf area index by the model that was made between percent ground cover and LAI. The results showed that this method can estimating leaf index by measuring percent ground cover. the correlation of estimating leaf index and actual leaf index were tested ,the R was about 0.77~0.93*and correlation was remarkable or great remarkable.The results showed that this method can estimating leaf index in rice and have provided a stable and effective method for estimating canopy leaf index in rice.