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稀土复混肥于1992年通过国家中试鉴定,1994年通过国家验收鉴定。经过全国17个省、市3年肥效对比试验,证明稀土复混肥是一种新型的高效复混肥。一、稀土复混肥不但能促使稀土元素被充分利用,起到植物生长调节剂的作用,还能减少氮、磷、钾等可利用性元素的退化。氮、磷、钾的利用率相对地提高8.6%、6.7%、10.6%,保证了作物发育对养分的需要。另外,稀土复混肥还含有作物生长所必须的多种微量元素,可促进作物早熟3—7天。与习惯施肥对比,施用含稀土的复混肥平均比习惯施肥增产22.4%。与氮、磷、钾等养分不含稀土的复混肥对比,施用含稀土的复混肥的肥效比不含稀土
Rare earth compound fertilizer in 1992 passed the national pilot test, in 1994 passed the national acceptance. After 17 provinces and municipalities across the country three years fertilizer contrast test proved that rare earth compound fertilizer is a new type of high efficiency compound fertilizer. First, the rare earth compound fertilizer can not only promote the full use of rare earth elements, play a role as a plant growth regulator, but also reduce the availability of nitrogen, phosphorus, potassium and other elements of degradation. Nitrogen, phosphorus and potassium utilization rate increased by 8.6%, 6.7%, 10.6%, to ensure the crop development of nutrients. In addition, the rare earth compound fertilizer also contains a variety of trace elements necessary for crop growth, can promote crop early maturity 3-7 days. Compared with the conventional fertilization, the application of fertilizers containing rare earth fertilizers on average, an increase of 22.4%. Compared with nitrogen, phosphorus, potassium and other nutrients do not contain rare earth compound fertilizer, fertilizers containing rare earth compound fertilizers than non-rare earth