施氮对胡麻养分吸收及产量构成的影响  

Effect of nitrogen fertilizer on nutrient accumulation and yield of oil flax

作　　者：杨波[1] 郭丽琢[1] 牛俊义[1] 

机构地区：[1]甘肃农业大学农学院,甘肃兰州730070

出　　处：《甘肃农业大学学报》2014年第1期60-64,共5页Journal of Gansu Agricultural University

基　　金：甘肃省自然科学基金(1107RJZA160);国家胡麻产业技术体系营养与施肥专项(CARS-17-GW-9)

摘　　要：采用盆栽模拟试验的方法，以‘陇亚杂1号’胡麻为试验材料，研究了氮肥施用量及施用时期对胡麻氮、磷、钾养分积累及千物质、产量形成的影响．结果表明：0．1～0．2g／kg的氮肥施用量显著提高了胡麻氮、磷、钾素的吸收量、干物质积累量及籽粒产量；基肥量由0．1g／kg增加到0．2g／b时，胡麻干物质积累量，氮、磷、钾吸收量，籽粒产量均未显著增加．施用量为0．2g／kg的氮肥分基肥（2／3）和现蕾期追肥（1／3）两次施用，改善胡麻氮磷钾营养及促生效果均显著优于全部作为基肥施用，前者的籽粒产量较后者提高了36％．施用化学氮肥时，2／3基肥＋现蕾期1／3追肥方式的效果优于全部作为基肥施用．Pot experiment was conducted to investigate the effects of nitrogen fertilizer on nutrient ac- cumulation and yield of oil flax. The results showed that nitragen fertilizer was 0. 1 -0. 2 g/kg significantly increased nitrogen,phosphorus and potassium accumulation,as well as dry matter and grain yield. The im- provements weren＇t significantly enhanced when basal fertilizer dosage （g N/kg soil） increased from 0. I to 0. 2. When the nitrogen dose was 0. 2 g/kg, the improvement resulted from 2/3 basal fertilizer together with 1/3 dressing was significantly higher than that from fertilizing all before planting, the grain yield of the former increased by 36% than that of the latter. When chemical nitrogen fertilizer was applied, the growth improvement from the former was better than that from the latter.

关 键 词：氮肥 胡麻 养分积累 干物质 产量 

分 类 号：S565.9[农业科学—作物学]