控释配方肥对菠萝钾元素吸收与分配的影响

Effects of Controlled Release BB Fertilizer on Potassium Uptake and Distribution in Pineapple

摘要: 采用田间试验法，设定常规多次追肥管理模式中追肥量为100%用量，研究一次性减量施用控释配方肥对菠萝钾元素吸收与分配的影响。结果表明：75%施肥量的控释配方肥中，菠萝果实、茎和整株的生物量分别增加了18.7%、14.8%和9.6%;75%施肥量的控释配方肥明菠萝对钾的吸收，增加了27.8%;60%施肥量控释配方肥明显增加了菠萝钾元素在果实中的分配比例，增加了9个百分点。因此，一次性施用减量25%～40%控释配方肥可保证菠萝吸收持平或更多的养分。

Abstract: Compared with traditional fertilization, a field experiment was carried out to clear up the effects of single applied controlled release BB fertilizer of 60% or 75% of traditional application on potassium uptake and distribution in pineapple. The result showed that, the fresh fruit, stem, and total weight were increased 18.7%, 14.8% and 9.6%, by 75% application of controlled-release BB fertilizer. Besides, compared with blank treatment, K proportion in fruits was improved 9 percent point by 60% application treatment. To sum up, compared with the traditional fertilization, the controlled-release BB fertilizer with a lower of 25%～40% application would enhance nutrients uptake in pineapple.