BB肥（即大粒掺混肥）是国际上90年代最新推出的肥料新产品．它是根据土壤肥力水平。作物需要量而直接将大颗粒氮磷钾等肥料灵活掺混而成的一种肥料浙江省农科院土肥所经过大量探索研究．将B自肥中的氮肥在外面包卜一层特松卜缓释膜，进而成为一种肥效稳K们，z释BB肥＿该肥料从 BB fertilizer (ie, granule fertilizer) is the latest international new fertilizer product introduced in the 90s. It is based on soil fertility level. Crop needs and directly to the large particles of nitrogen, phosphorus and potassium fertilizers such as a flexible blend of fertilizer from Zhejiang Academy of Agricultural Sciences soil after a lot of exploration and research. The B fertilizer from the fertilizer in the outer layer of Bu Bu Bu Bu Song Bu sustained release film, and then become a stable fertilizer efficiency K, BB release BB fertilizer _ the fertilizer from the