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一、促进生根:对不易发根的树种、品种扦插繁殖时可进行药剂处理。生产上多用吲哚丁酸液浸蘸。硬枝扦插浓度为5—100PPM,基部浸蘸12—24小时,嫩枝扦插为5—25PPM。也可用50％酒精作溶剂,将其配成高浓度溶液,快速浸蘸。 二、保花保果:应用调节剂,可改变果树内源激素的水平和不同激素间的平衡关系,提高坐果率。使用较多的调节剂有萘乙酸、赤霉素等,如:山楂盛花期喷20—50PPM赤霉索,可提高坐果率10％—20％;7月底,8月中旬对枣树各喷一次萘乙酸,浓度为15—20PPM,可减少采前落果。
First, to promote rooting: Difficult to hair root tree species, species of cutting propagation can be treated. Production of indole butyric acid dipped in liquid. Hardwood cuttings concentration of 5-100PPM, the base dip 12-24 hours, softwood cutting 5-25PPM. 50% alcohol can also be used as a solvent, dubbed it a high concentration solution, dip quickly dip. Second, the flower Paul fruit: application of regulator, can change the level of endogenous hormones in fruit trees and the balance between different hormones to improve the rate of fruit set. Use more regulator naphthalene acetic acid, gibberellin, such as: hawthorn bloom flowering spray 20-50PP brixycone, can improve fruit set rate of 10% - 20%; at the end of July, mid-August jujube spray once Naphthalene acetic acid, the concentration of 15-20PPM, can reduce the premature harvest fruit.