基于土壤硝态氮测试的夏玉米氮肥施用研究  

Study of Nitrogen Fertilization on Summer Maize Based on Soil Nitrate Nitrogen Test

作　　者：曲日涛[1] 邹德龙[1] 张培苹[1] 王洪章[1] 

机构地区：[1]烟台市农业技术推广中心,山东烟台264001

出　　处：《山东农业科学》2009年第2期58-61,共4页Shandong Agricultural Sciences

摘　　要：以夏玉米为研究对象，通过田间试验，建立了基于土壤硝态氮测试和氮素平衡的氮素实时监控技术，以促进作物产量和氮肥利用效率协同提高。研究表明：优化施氮量为183～280kg／hm^2，平均为220kg／hm^2，比习惯施氮节约氮45．3％，产量提高4．1％。校验试验结果表明，优化氮肥处理在各个处理中产量最高。本研究确定的优化施氮量是合理的，且降低氮肥用量，减少氮素损失，提高了氮肥利用率。With the summer maize as material and by field experiment , the nitrogen real - time monitoring technology was constructed based on the soil nitrate nitrogen test and nitrogen balance to increase the maize yield and the nitrogen use efficiency. The research indicated that the optimum application of nitrogen fertilizer was 183 - 280 kg/hm^2 with the average of 220 kg/hm^2, which could save 45.3% nitrogen fertilizer, but increase the maize yield by 4.1%. the verification test showed that the yield of the optimized nitrogen fertilization treatment was the highest. As a result, the application of the optimized nitrogen fertilization determined in this experiment was reasonable, which could decrease the application rate of nitrogen fertilizer and loss of nitrogen, then increased the nitrogen use efficiency.

关 键 词：硝态氮测试 夏玉米 精准施氮 氮肥利用效率 

分 类 号：S513.062[农业科学—作物学]