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高浓度复(混)合肥料有效养分含量高,肥分均匀,在中上等肥力的石灰性土壤上,对冬小麦具有极为显著的增产作用。磷酸铵系的复(混)合肥料效应,比单元化肥成倍增产,比等氮磷(尿素+三料磷肥)化肥临时混施的增产8.99—17.41%.其增产效应依次为:粉粒状磷酸—铵>颗粒状混肥>颗粒状磷酸二铵>颗粒状硝酸磷肥。硝酸磷肥在两组试验中都较等氮磷临时混施的减产,且籽粒的营养成分含量也较低.
High concentration of complex (mixed) Hefei effective high nutrient content, fertilizer evenly, in the upper fertility of calcareous soil, winter wheat has a very significant increase in production. Ammonium phosphate complex (mixed) fertilizer effect, than the unit fertilizer doubled yield than the other nitrogen and phosphorus fertilizer (urea + Sanfen phosphate fertilizer) temporary yield increase of 8.99-17.41% .The yield effects were as follows: powdered granular acid - Ammonia> Granular fertilizer> Granular ammonium phosphate> Granular nitrate fertilizer. Nitrophosphate fertilizer in both groups were lower than those of the other isosorbovir, and the content of nutrients in the grain was also lower.