干枣含有丰富的营养物质,含糖62.0％,蛋白质3.3％,脂肪0.4％,以及维生素等,是很好的果品、中药、木本粮食。枣树适应性很强,有抗旱、抗寒、耐瘠薄、耐盐碱等特点,广阔的荒山秃岭,废河荒滩都可以栽植。但是,枣树落花落果严重,座果率很低。据报道,落花率达94.3％,落果率为79.1％,着果率只有1.2％。因此,研究枣树保花保果措施,提高座果率,对发展枣树生产很有必要,本试验目的是探讨枣树喷“九二○”的保花保果效果,为生产上应用提供根据。一、基本情况本试验于1972及1973年共进行了两年。一九七二年是在锦西县虹螺岘公社板石沟大队第三生产队北房枣园进行的。该园为 Dried jujube is rich in nutrients, sugar content of 62.0%, protein 3.3%, 0.4% fat, and vitamins, is a good fruit, Chinese medicine, woody food. Jujube adaptability, drought, cold, resistance to infertility, salinity and other characteristics of the vast barren Bald Ridge, waste river wasteland can be planted. However, the jujube flowers fall seriously, fruit set rate is very low. It is reported that the rate of falling is 94.3%, the rate of falling fruit is 79.1% and the rate of fruit growing is only 1.2%. Therefore, the study jujube flower Paul fruit measures to improve the rate of fruit set is necessary for the development of jujube production, the purpose of this experiment is to explore Jujube spray “920” Paul Paul fruit results for the production of applications according to. First, the basic situation The experiment in 1972 and 1973 for two years. In 1972, it was conducted at the North Room Zaoyuan Garden, the third production team of Ban Shek Gou Brigade, Hongxilian, Jinxian County. The garden is