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通过对小麦专用肥、玉米专用肥、马铃薯专用肥在８ 个试验、示范点上的试验，表明施用专用肥均有增产效果。小麦专用肥平增产１０ ．３ ％ ～１４ ．６６ ％ ；地膜玉米专用肥平均增产１１ ．５４ ％ ～１６ ．８８ ％ ；马铃薯专用肥平均增产１３ ．１４ ％ ～１８ ％ 。增产效果依次为马铃薯专用肥＞ 小麦专用肥＞ 地膜玉米专用肥
Through the experiment of special wheat fertilizer, corn special fertilizer and potato special fertilizer in 8 experiments and demonstrations, it shows that all the special fertilizers have the effect of increasing yield. Fertilizer wheat yield increase 10. 3% ~ 14. 66%; mulching corn increased average yield 11. 54% ~ 16. 88%; potato special fertilizer average yield 13. 14% ~ 18%. The yield-increasing effect was followed by potato special fertilizer> wheat special fertilizer> plastic film maize special fertilizer