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近年来,化肥市场上,已相继出现热固型树脂包膜肥料、包裹型包膜肥料。专家认为,其发展前景可观。大多数化肥产品都是水溶性的,施入土壤后,容易流失、分解或被固定,养分利用率降低。如果采用包膜技术,可使化肥利用率提高15％,可大大节约化肥用量。 我国开发出的包膜化肥生产技术,是采用水渗透性能不同的包膜材料包裹在水溶性肥料表面,使肥料养分能持续缓慢地释放,提高肥效。据有关资料介绍,美国、日本和德国等发达国家已开发出不同功能的包膜肥料。这些产品分为C型、CK型、U型和N型,适用于不同的作物及土壤。我国包膜化肥的研制与开发虽然起步较晚,但发展很快,并有自己的特色。 包膜化肥具有以下几个特点:
In recent years, fertilizer market, have emerged thermosetting resin coated fertilizer, coated coated fertilizer. Experts believe that its development prospects are considerable. Most fertilizer products are water-soluble, applied to the soil, easily lost, decomposed or fixed, reduced nutrient utilization. If the use of coating technology, fertilizer utilization can be increased by 15%, can greatly reduce the amount of fertilizer. China has developed an envelope fertilizer production technology, the use of water permeability of different coating materials wrapped in water-soluble fertilizer surface, so that nutrients can be sustained and slow release of fertilizer to improve fertilizer efficiency. According to relevant information, developed countries such as the United States, Japan and Germany have developed coated fertilizers with different functions. These products are divided into C-type, CK-type, U-type and N-type, suitable for different crops and soil. Although the research and development of coated fertilizers in China started relatively late, it has developed rapidly and has its own characteristics. Envelope fertilizer has the following characteristics: