Effect of Growth Regulator on the Fruit Setting and the Chlorophyll Content of Walnut

The object of this experiment is the walnut of Wen185 which is seven years old.Different concentrations of GA_3,6-BA and rare element fertilizer were sprayed during full bloom stage of female flower.Effect of 3 kinds growth regulators on the fruit setting and chlorophyll content were studied.The results showed the treatmonts could enhance the fruit set percentage of walnut at different levels except for the rare element fertilizer,GA_3 600 mg/L and 6-BA 30 mg/L.Among them the most increasing margin was 6-BA 50mg/L,which was 17.89% higher than comparison.The contents of the chlorophyll were all higher than the comparison.