Effect of titanium nutrient on physiological properties during the growth course of flue-cured tobacco

The effects of titanium added to soil on some physiological property were studied.The results showed that the content of chlorophyll,carotenoid and the invertase activity were increased after irrigating right amount titanium at root elongation stage,titanium could promote photosynthesis in flue-cured tobacco,which also was beneficial for the transformation and utiliation of assimilate.At the same time,titanium could improve the activities of POD and SOD,but reduced MDA contents,thus decreasing the degree of membrane-lipid peroxidation and enhancing the ability of anti-ageing and stress resistance.The effect of titanium fertilizer irrigated root was obviously reflected in a short time.When rich-titanium synergist diluted 600 times was poured to root,the result was better than other concentrations.