In order to improve the quality of the raw lacquer,we sprayed the lacquer tree nutrient solution with mineral elements(P,K,Cu,Mg,etc.) and plant growth regulators on the Maoba lacquer trees,then observed the growth of lacquer tree and tested the quality of raw lacquer.The results showed as follows:The lacquer trees in the treatment group flourish,barks are thicker,and the time of leaf shedding was postponed about half a month,with no side effect;the raw lacquer from the treated lacquer trees contained more urushiol,laccase and gum;the organoleptic index of the raw lacquer from the treated lacquer trees improved significantly;the surface drying time of raw lacquer from the treated lacquer trees was shortened.The main mechanism is that the lacquer tree nutrient solution changed the nutrient condition and improved metabolism.The nutrient solution can promote lacquer-tree and improve lacquer quatity.

In order to increase the production of the raw lacquer,the authors prepared the Toxicodendron verniciflum(Stokes) F.A.Barkley nutrient solution with mineral elements(P,K,Cu,Mg,etc.) and plant growth regulators,sprayed it on the Maoba lacquer tree were used to study.The result showed that the its flourish,bark thickening,the time of leaf shed were postponed about half a month,no side effect in the treat group.The raw lacquer production was increased 21.2% in the treat group.Production mechanism is that the lacquer enhances the metabolic synthesis after using nutrient solution.

In order to increase yield and quality of raw lacquer,growth of lacquer tree was studied,by preparing nutrient solution added mineral elements(P,K,Cu,Mg,and so on) and plant growth regulators,and the nutrient solution with different concentrations was sprayed on Maoba lacquer tree.The results showed that the sprayed lacquer tree was more flourish,had thicker bark,and defoliation time was postponed about half month,compared with CK.Raw lacquer had no side effect,yield was obviously increased and quality was obviously improved.