腐植酸钠是一种拟激素类物质,具有较高的生理活性,并兼具肥料效应。1987年和1988年在青龙、抚宁县对盛果期安梨树进行喷布腐植酸钠试验。腐植酸钠为丰润县复肥厂生产,含腐植酸60％。设12000、6000、4000、3000和0ppm(清水对照)5个处理,裂株小区,随机排列,重复3～5次,于盛花期喷布。通过两年、多点试验,初步肯定了腐殖酸钠提高安梨座果率的效果,在3000～12000ppm Sodium humate is a pseudo-hormone substances, with high physiological activity, and both fertilizer effect. In 1987 and 1988 in Qinglong, Funing County Ann pear fruit spray sodium humate test. Sodium huminate is produced in Fengrun County compound fertilizer plant, containing 60% humic acid. Set 12000,6000,4000,3000 and 0ppm (water control) 5 treatment, split plot area, random arrangement, repeated 3 to 5 times, at full bloom flowering. After two years of trial and more, initially affirmed the effect of sodium humate to increase the fruit rate of pear, in 3000 ~ 12000ppm