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利用2011~2014年河北省“测土配方施肥”数据库数据对河北省夏玉米产量差和氮肥效率差进行分析。结果发现,河北省夏玉米一般农户产量、高产农户产量、配方施肥产量和高产纪录产量分别为7 911、10 097、8 411、11 093 kg/hm~2,所对应的产量差分别为2 186、500、3 182 kg/hm~2。邯郸地区的产量潜力和产量差最大,廊坊和沧州的产量潜力最小,产量差以石家庄和衡水最小。一般农户、高产农户、配方施肥和高产纪录的氮肥偏生产力分别为39.5、47.3、42.7、50.3 kg/kg,所对应的氮肥偏生产力差分别为7.8、3.2、10.8 kg/kg,存在较大的效率差。不同地区玉米氮肥偏生产力效率差以邯郸最大,邢台最小。
Based on the data of “Soil Testing and Fertilization” database in Hebei Province from 2011 to 2014, the yield difference and the inefficiency of summer maize in Hebei Province were analyzed. The results showed that the average yield of summer maize in Hebei Province, the yield of high-yielding farmers, the yield of formulated fertilization and the records of high-yielding yield were 7 911,10 097,8 411,11 093 kg / hm 2, respectively, corresponding to 2 186 , 500,3 182 kg / hm ~ 2. Handan area has the highest yield potential and yield difference, while Langfang and Cangzhou have the lowest yield potential with the least yield difference with Shijiazhuang and Hengshui. The partial productivity of nitrogenous fertilizer was 39.5,47.3,42.7 and 50.3 kg / kg for general farmer, high-yielding farmer, formula fertilizer and high-yielding record respectively. The corresponding partial yields of nitrogen fertilizers were 7.8, 3.2 and 10.8 kg / kg, respectively, Poor efficiency. In different areas, the productivity of partial nitrogen fertilizers in maize is the worst in Handan and the smallest in Xingtai.