【摘要】 富钾硅复合物中硅、钾、钙、镁养分的可溶性含量很高,但其有效态的养分含量却相对较低,故其养分只能缓慢地释放出来。在5个月的贮存过程中,多元复合物的水分含量对其养分的有效性没有明显的影响,但其养分含量却经历了一个明显的变化过程,其中可以用Freundlich方程拟合钾、镁的变化规律。多元复合物中硅、钾、钙、镁4种养分元素的释放速率随时间的延长而逐渐下降。更多还原

【Abstract】 In spite of its high content of citric acid soluble nutrient ingredients, the K-and-Si-rich compound is low in available nutrient. Its high content of nutrients will only be released slowly. During its five-month storage, its moisture content did not seem to affect availability of its nutrients, but its nutrient content changed significantly. Kinetics of the change in K and Mg could be simulated with Freundlich equation. Among the multi-elements of the compound, Si, K, Ca and Mg gradually decreased in releasing rate with the time passing by.更多还原