缓释肥料是以各种调控机制使养分最初释放延缓,延长植物对其有效养分吸收利用的有效期,使养分按照设定的释放率和释放期缓慢或控制释放的肥料。已有研究发现缓控释肥可以减少施肥的数量和次数,节约劳动力和成本,养分的释放与常规肥料相比更符合作物的吸收规律,显著提高肥料利用率,减少施肥对环境的影响。缓控释复混肥采用硫磺加树脂包膜达到延迟肥料养分释放的目 Slow release fertilizer is a variety of regulatory mechanisms to delay the initial release of nutrients to extend the effective period of plant nutrient absorption and utilization of nutrients in accordance with the set release rate and release of slow or controlled release of fertilizer. Studies have found that controlled-release fertilizers can reduce the number and frequency of fertilization and save labor and costs. Compared with conventional fertilizers, nutrient release is more in line with crop absorption rules, significantly increasing fertilizer utilization and reducing the impact of fertilization on the environment. Slow controlled release compound fertilizer using sulfur plus resin coating to achieve the purpose of delayed release of fertilizer nutrients