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一、引言 B_9作为一种多效应的外源植物激素,在果树生产上的应用越来越广泛。B_9促进幼年果树开花的效果尤为著显,目前国外已普遍用于苹果和洋梨,我们近年的研究也肯定了在砂梨幼树上应用的良好效果。B_9在桃、李、樱桃、葡萄以及柑桔、芒果等果树上也有试验或应用。国内、外对B_9应用研究的报道较多,作用机理的研究报道较少,对B_9与营养元素关系的研究更少。Southwick等人(1968)在苹果喷布B_9后的当年和第二年分析了叶内氮、磷、
I. Introduction B_9 as a multi-effect exogenous plant hormones, the application of fruit trees in production is more and more widely. B_9 to promote the flowering effect of juvenile fruit trees is particularly evident, at present, foreign countries have been widely used in apples and pears, our recent research also affirmed the application of sand pear saplings good results. B_9 Peach, plum, cherry, grape and citrus, mango and other fruit trees also have test or application. Domestic and foreign applications of B_9 more reports on the mechanism of action is less reported on the B_9 and the relationship between nutrients less. Southwick et al. (1968) analyzed leaf nitrogen, phosphorus,