How to use common plant growth regulators:
1. Seed soaking method: immerse the seeds (roots, tubers) in a diluted solution of a certain concentration, and after a certain period of time, take them out and dry them for sowing. This method is called seed soaking method. In order to improve the germination rate of rice and wheat seeds, Zhongwei Chunyu No. 1 () can be used for seed soaking. In order to break the dormancy of potatoes, seed potatoes can be soaked in Zhongwei. The type and concentration of plant growth regulators used for seed soaking and the length of seed soaking time should be determined according to different plant varieties, the purpose of seed soaking and the temperature at that time. When soaking seeds at high temperature (above 25°C), the time should be short, and when the temperature is low (10-20°C), the time may be slightly longer. Generally, the soaking time should not exceed 24 hours, and the seed soaking time should be limited to immersing the seeds in the liquid medicine, and pay attention to the change of water quality.
2. Dipping method: In order to root the cuttings and improve the survival rate, the cuttings are dipped in the liquid medicine or the base end of the cuttings is dipped in powder, and then the cuttings are cut into the seedbed. The length of the soaking (dipping) time is related to the concentration. Generally, there are the following three methods:
1) Quick immersion method: After immersing the cuttings in the high-concentration conditioner for 2 to 5 seconds, insert them into the seedbed immediately. This method allows high concentrations of growth regulators to enter the plant tissue through the incision and promote the formation of hairy roots from the callus. For example, immerse the base of cuttings such as grapes and kiwi fruit in a solution of 500-1000 mg/kg of Zhongwei for 3 to 5 seconds. After the base of the cuttings is slightly dry, the cuttings are placed in the seedbed.
2) Slow soaking method: soak the cuttings in a growth regulator with a lower concentration for a long time to promote rooting. For example, dilute Zhongwei to 20 mg/kg, and then immerse the base of the cutting about 3 cm in the medicine for 5 to 24 hours. The length of the soaking time depends on the type of seedlings, the degree of lignification of the cuttings and the hair roots; generally, the annual cuttings, and the roots are difficult to grow, the soaking time should be longer. ) and easier to root, soak it for 4 to 5 hours.
