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目前市场上的缓控肥品种众多,良莠不齐,其真假优劣让人困扰,主要存在的问题:一是在肥料表面上染色,冒充树脂包膜尿素;二是在包装上标GB/T23348标准,却用硫磺包衣的尿素、脲甲醛的产品颗粒等;三是按照GB/T23348标准控氮量必须达到8%,有的企业为降低价格往往达不到这个比例。以上现状导致农民对部分控释肥的肥效表示失望,根本原因一是控释技术不过
There are many kinds of slow-release fertilizers on the market at present. There are many kinds of slow-release fertilizers on the market. The quality of the products is troubling. The main problems are: firstly, the surface of fertilizer is dyed and pretends to be resin-coated urea; , But with sulfur coated urea, urea formaldehyde product particles, etc .; third is in accordance with the standard GB / T23348 control of nitrogen must reach 8%, and some companies often lower the price to reduce this ratio. The above status quo led farmers to disappoint disappointment on the effectiveness of some controlled release fertilizers, one of the fundamental reasons controlled release technology, however