【摘要】 对本课题组研制的一种观赏植物专用缓释肥片的部分特性进行了研究,连续测定该缓释肥片1个月内水浸出物的电导率(EC)和pH值动态变化。结果表明,水浸出物EC值在前6 d上升稍快,随后增幅变缓,水浸出物pH值大致为中性;进一步测定该缓释肥片淋溶液的电导率变化表明,添加缓释肥片淋溶液的EC值呈现缓慢下降趋势,显示其具有良好的缓释特性。另外,连续观察缓释肥片水中浸泡期间的外观变化,其在水中1个月后仍能保持颗粒完整性,未见明显的崩裂发生,显示出良好的外观稳定性。更多还原

【Abstract】 On the basis of continuous testing of the changes in electric conductivity and pH values of aqueous extract for a month,some properties of the new-type special slow-released fertilizer tablets for ornamentals were investigated.The results showed that the slow-released fertilizer tablets had a significant slow-released effect,and their aqueous extract of fertilizer tablets was neutral.The result of continuous observation also showed that the tablets placed in water still were integrated without obvious cracking for more than one month.更多还原