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EF植物生长调节剂是从按树中提取出来的一种黄酮种物质。在葡萄果、苹果试验的基础上,1987年5月我们将其应用在盛花期山植树上;对提高座果率的效率比九二○显著。用少量90℃热水溶解含13.22％灰褐色粉末的
EF Plant Growth Regulator is a flavonoid material extracted from the tree. Based on the grape and apple experiments, we applied it to the flowering hillside trees in May 1987 and the efficiency of increasing the fruit set rate was significantly higher than that of September 20. With a small amount of hot water at 90 ℃ dissolved with 13.22% taupe powder