【摘要】 采用盆栽试验和室内分析相结合的方法,研究了24个燕麦品种在2个氮素水平下的生物学产量、氮素积累及氮素利用效率等方面的差异。结果表明,不同燕麦品种对低氮的忍耐能力不同,在低氮条件下,白燕7号、Vao-2 2006、蒙燕7726、白燕8号等4个品种产量性状良好,具有氮素积累强、氮经济利用效率高等特点;不同燕麦品种对氮素的响应程度也存在一定的差异,在低氮水平下,坝莜6号、坝莜9号、H 44、甘肃农家种为氮素敏感品种,产量水平相对较低,但施氮后产量显著提高。更多还原

【Abstract】 Field trial and lab analysis were used to study the differences of biological yield, nitrogen accumulation and nitrogen utilization efficiency of 24 oat varieties under two N levels. The results showed that there were great difference among oat varieties in the N use ability. Vao-2 2006, Baiyan 7, Mengyan 7726 and Baiyan 8 were possessed of high N utilization efficiency, which had the characteristics of higher yield in low N level, stronger N absorption ability and higher N economy utilization efficiency. The response degree of different oat varieties to nitrogen was also different. Bayou 6, Bayou 9, H 44 and Gansunongjiazhong were N fertilizer sensitive oat varieties, which had the features of lower yield in low N level and relatively bigger increments after the application of N fertilizer.更多还原