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分析了树脂和硫磺包裹尿素缓释肥料发展缓慢的原因和弊端,提出以水溶性聚合物作为尿素和复混肥料的包膜、胶结和内质缓释剂,具有降解快、对作物无害、改善土壤结构、成本低等特点,将促进缓释肥料的发展。采用生产不同时间段释放养分的缓释肥,按作物不同生育期对养分的需求比例掺混在一起,生产作物专用的缓/控释BB肥料简单易行,应是我国缓/控释肥料的发展方向。
The reasons and disadvantages of slow release of resin and sulfur encapsulated urea slow-release fertilizer are analyzed. Water-soluble polymer is proposed as a coated, cemented and endoplasmic sustained-release agent for urea and compound fertilizers. It has the advantages of fast degradation, Improve the soil structure, low cost, will promote the development of slow release fertilizer. Slow-release fertilizers that are used to produce nutrients at different time periods are blended together according to the proportion of nutrients needed during different growing stages of the crop. It is easy and feasible to produce slow / controlled release BB fertilizers for crops, which should be the development of slow / controlled release fertilizers in China direction.