Fertilization by Soil Testing and Fertilizer Use Efficiency of Spring Maize

Based on result of'3414'fertilization experiment effect for three varieties of spring maize in 21 experiment sites of Xuanhua county,Hebei province,techniques for fertilization by soil testing and fertilizer use efficiency of spring maize were studied.The results showed that fertilizer use efficiency was determined by soil fertility,higher fertilizer use efficiency was got in lower fertility soil,and NPK fertilizer use efficiencies of spring maize in Xuanhua county were 30.3%,18.7% and 29.6%,respectively.By further simulation and analysis,index system of soil fertility and recommendation index system of NPK fertilizer in Xuanhua county were established,which is basis not only for high yield of spring maize by fertilization in Xuanhua County,but also for high yield of spring maize by fertilization in other regions of the same kind.