Coordinative Effect Of VB₁ And La～(3+) On Regulation Of Rice Seedling Growth And Preparation And Apprication Of The Product "Jiang Miao Bi Ke

To protect rice seedlings against various environmental stresses and increase the growth and development of the plant, VB1 and La3+ were applied to the seedlings at the stage of 6 leaves. As a result, the seedlings grew vigorously and set up a good basis for the terminal good harvest.The results showed that there was an additive effect by mixture of VB1 and La3+, VB[ and La3+ had remarkable co-effect on increasing the growth of rice seedlings. Treated with 4g/L of the mixture of VB1 and La 3+, satisfactory effect could de obtained. After 7 days of treatment, Root vigor and IAA content in roots were increased 19.6% and 72.5% respectively. The contents of chlorophyll in the young leaves, activities of SOD, PAL and POD were increased 42.5%, 34.5%,51.7% and 29.6% above CK respectively.The tolerance of rice seedlings to stresses and the herbicide in the soil was enhanced by application of VB1 AND La3+. In addition, VB1 and La3+ could promote the resistance of rice seedlings against rice blast, after 5 days and 10 days, the reduced-resistance indexes were 63.2% and 57.9% respectively. Taken together, the co-effect of VB1 and La3+ was very obvious on increasing rice growth and yield.