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多元磁肥是一种以粉煤灰为磁性载体，以Ｎ、Ｐ、Ｋ养分为基质在一定强度的磁场作用下生产制造的一种新型复合肥料。两年试验结果表明，油菜施用多元磁肥较未磁化肥增产１１．５～２９．２０ｋｇ／６６７ｍ２，增产７．９％～１９．８０％，差异显著。每６６７ｍ２净增值２３００～５８．４０元，效益明显。同时可提高单位养分产量０．５８～１４６ｋｇ。
Multivariate magnetic fertilizer is a kind of new compound fertilizer which is produced by the action of magnetic field with certain intensity with N, P, K nutrients as the carrier with fly ash as magnetic carrier. The results of two years showed that the application of multivariate magnetic fertilizer rape increased yield 11.5 ~ 29.20kg / 667m2, yield increased 7.9% ~ 19.80% than the non-magnetic fertilizer, the difference was significant. Each 667m2 net added value of 2300 ~ 58.40 yuan, obvious benefits. At the same time can improve the unit yield of 0.58 ~ 146kg.