芴-9-羧酸及其衍生物是一类新型的多用途的植物生长调节剂。其对植物的生理效应有多种多样的影响,对人、畜毒性低,不致引起环境污染,因此,在农业上有广泛的应用前途。关于桃树化学疏果的研究,国内外经多年试验,已应用了石硫合剂、乙烯利、3-CPA、N-1-萘基酞酰胺等多种药剂,但在生产上还不能达到安全可靠的程发,所以大面积推广应 Fluorene-9-carboxylic acids and their derivatives are a new class of versatile plant growth regulators. Its physiological effects on plants have a variety of effects, low toxicity to humans and animals, will not cause environmental pollution, therefore, has a wide range of agricultural applications. Peach chemical thinning on the study, after years of testing at home and abroad, has been the application of the stone sulfur mixture, ethephon, 3-CPA, N-1-naphthyl phthalamide and other agents, but in the production can not be achieved Reliable process, so a large area should be promoted