CAJ | 학술논문

为了研究施用氮肥对土壤养分和春玉米产量的影响，在辽北昌图县棕壤土上开展了长期定位试验。试验结果表明，不施任何肥料的处理，土壤有机质、全氮、碱解氮、速效磷含量年降低0．37 g ／kg、0．02 g ／kg、5．6 mg ／kg和1．6 mg ／kg。不同施氮水平条件下，土壤有机质、速效磷和速效钾含量增加，全氮和碱解氮含量下降。在等量（N 241．5 kg ／hm2）施氮情况下，土壤有机质、全氮、碱解氮和速效钾含量以30％作基肥，70％在春玉米拔节中期追施的为最高。最佳的施 N 量为241．5 kg ／hm2，较好的施肥方法为在播种时将全部氮磷钾肥料一次深施（15 cm）。
위료연구시용담비대토양양분화춘옥미산량적영향，재료북창도현종양토상개전료장기정위시험。시험결과표명，불시임하비료적처리，토양유궤질、전담、감해담、속효린함량년강저0．37 g ／kg、0．02 g ／kg、5．6 mg ／kg화1．6 mg ／kg。불동시담수평조건하，토양유궤질、속효린화속효갑함량증가，전담화감해담함량하강。재등량（N 241．5 kg ／hm2）시담정황하，토양유궤질、전담、감해담화속효갑함량이30％작기비，70％재춘옥미발절중기추시적위최고。최가적시 N 량위241．5 kg ／hm2，교호적시비방법위재파충시장전부담린갑비료일차심시（15 cm）。
In order to study the effect of nitrogen fertilizer on soil nutrient and yield of spring maize,the long-term located experiment was carried out in the brown soil of Liaoning northern Changtu County.The test re-sults show that,without applying any fertilizer treatment,soil organic matter,total nitrogen,alkali hydrolyza-ble nitrogen,available phosphorus content decreased in 0.37 g /kg,0.02 g /kg,5.6 mg /kg and 1 .6 mg /kg. Under the different nitrogen application,soil organic matter,available phosphorus and available potassium content increased,total nitrogen and available nitrogen content decreased.In the same amount (N 241 .5 kg /hm2 )under the condition of nitrogen,soil organic matter,total nitrogen,alkali hydrolyzable nitrogen and a-vailable potassium content with 30% as base fertilizer,70% in Spring Maize Jointing Stage and topdressing was the highest.Application of 241 .5 kg per hectare of N was the best application amount,and in planting will all NPK fertilizer deep application (15 cm).