辽宁农业科学
遼寧農業科學
료녕농업과학
LIAONING AGRICULTURAL SCIENCES
2014年
5期
16-18
,共3页
玉米%氮肥%产量%利润%养分吸收
玉米%氮肥%產量%利潤%養分吸收
옥미%담비%산량%리윤%양분흡수
Maize%Nitrogen fertilizer%Yield,Profit%Nutrient absorption
通过玉米氮肥用量田间试验，探索不同氮肥用量对玉米产量、效益及养分吸收的影响。试验结果表明：不同地区对氮肥施用量的表现存在一定差异，朝阳地区玉米施氮增产10.2%~23.2%，增收173~2312元/hm2，经济合理施氮量为230 kg / hm2，昌图地区玉米施氮增产21.3%~53.2%，增收2539~6132元/ hm2，经济合理施氮量为245 kg / hm2；施氮可促进玉米对氮、磷、钾素的吸收，但随着施用量的增加，氮肥的利用率降低，在本实验条件下，朝阳地区氮肥的利用率为12.6%~35.2%，昌图地区的氮肥利用率为22.2%~44.6%。
通過玉米氮肥用量田間試驗，探索不同氮肥用量對玉米產量、效益及養分吸收的影響。試驗結果錶明：不同地區對氮肥施用量的錶現存在一定差異，朝暘地區玉米施氮增產10.2%~23.2%，增收173~2312元/hm2，經濟閤理施氮量為230 kg / hm2，昌圖地區玉米施氮增產21.3%~53.2%，增收2539~6132元/ hm2，經濟閤理施氮量為245 kg / hm2；施氮可促進玉米對氮、燐、鉀素的吸收，但隨著施用量的增加，氮肥的利用率降低，在本實驗條件下，朝暘地區氮肥的利用率為12.6%~35.2%，昌圖地區的氮肥利用率為22.2%~44.6%。
통과옥미담비용량전간시험，탐색불동담비용량대옥미산량、효익급양분흡수적영향。시험결과표명：불동지구대담비시용량적표현존재일정차이，조양지구옥미시담증산10.2%~23.2%，증수173~2312원/hm2，경제합리시담량위230 kg / hm2，창도지구옥미시담증산21.3%~53.2%，증수2539~6132원/ hm2，경제합리시담량위245 kg / hm2；시담가촉진옥미대담、린、갑소적흡수，단수착시용량적증가，담비적이용솔강저，재본실험조건하，조양지구담비적이용솔위12.6%~35.2%，창도지구적담비이용솔위22.2%~44.6%。
Field experiments were conducted to study the effects of different application amount of nitrogen fer-tilizer on maize yield,benefit and nutrient absorption. The results show that N fertilization increased yield by 10. 2% ~ 23. 2% and profit by 173 ~ 2 312 yuan / hm2 compared with the treatment without nitrogen fertilizer, economic optimum N fertilizer rate was 230 kg / hm2 in Chaoyang ,whereas in Changtu ,N fertilization in-creased yield by 21. 3% ~ 53. 2% and profit by 2 539 ~ 6 132 yuan / hm 2 ,economic optimum N fertilizer rate was 245 kg / hm2 . N,P,K uptake rate was increased and N utilization efficiency was decrased with N applica-tion rate increasing,N utilization efficiency was 12. 6% ~ 35. 2% and 22. 2% ~ 44. 6% in Chaoyang and Changtu respectively. Reasonable application of nitrogen fertilizer was necessary to improve fertilizer utilization ratio.
