乙二膦酸是一种新型的有发展前途的植物生长调节剂,它具有催熟、增产、抗病等性能。它能促进果实的成熟、种子的发芽,开花和打破顶芽优势,有促进、抑制生育方面的作用。乙二膦酸在植物体内被吸收后,渐渐地转变为植物生长所需要的磷酸和乙烯。应用乙二膦酸能提高种子的饱满程度和发芽率,好于乙烯利。并具有使用浓度范围广,无药害,药效发挥缓慢,使用安全等特点。近几年来先后在蔬菜、玉米,花卉、苹果、梨、柑桔、葡萄上应用,都有不同程度的增产效果,只要使用得当,一般增产10—20%。棉花因施肥管理不当和气候条件的影响,常出现贪青迟熟,有的年份有20—30%的棉铃要到枯霜后才 Ethylene diphosphonic acid is a new and promising plant growth regulator, which has ripening, yield, disease resistance and other properties. It can promote fruit maturity, seed germination, flowering and break the top bud advantage, there is to promote and restrain the role of reproduction. Ethylene diphosphonic acid is absorbed in the plant body, and gradually transformed into the phosphoric acid and ethylene needed for plant growth. Application of ethylene diphosphonic acid can increase the seed fullness and germination rate, better than ethephon. And has the use of a wide range of concentrations, no phytotoxicity, efficacy is slow, safe to use and so on. In recent years, it has been applied to vegetables, corn, flowers, apples, pears, oranges and grapes in varying degrees. As long as it is properly used, it generally increases 10-20%. Cotton due to improper fertilizer management and climatic conditions, often greed green late, some 20-30% of the cotton boll until it