Abstract: In order to clarify the suitable sowing amount,row spacing and sowing methods for the forage production of Avena sativa cv. Qingyan No.1,a field experiment with tow-factors test design of sowing amount and row spacing,that include 4 levels of sowing amount and 5 levels of row spacing to study the effect of different sowing amount and row spacing on forage yield of Avena sativa cv. Qingyan No.1,and improve the high-yield cultivation techniques of this variety in production and promotion. The results showed that the sowing amount and row spacing had significant effects on yield of fresh grass and hay in Avena sativa cv Qingyan No.1(P<0.05). The yield of fresh grass and hay of oats decreased with the increase of row spacing under the same sowing amount,and the yield of fresh grass and hay increased with the increase of sowing amount under the same row spacing;Among the treatments,sowing amount S4 and row spacing R1were the best. Under different sowing methods the broadcast sowing had the highest forage yield under the sowing amount S4,and the yield of fresh grass and hay reached 36.324 t·hm^-2and 11.330 t·hm^-2,respectively. Under the drilling sowing,the highest yield and the lowest yield of fresh grass and hay were significantly higher than the highest yield of broadcast sowing. The oat of Qingyan No. 1 could harvest the highest yield at the milk stage under different harvest period,and the fresh grass and hay could reach the 102.562 t·hm^-2 and 30.504 t·hm^-2,respectively,which were 4.51 times and 3.81 times higher than the lowest yield at heading stage. Plant height,stem thick,leaf area and total number of tiller increased first and then decreased with the increase of sowing amount under different sowing amount and sow spacing,and plant height and stem thick increased with the increase of row spacing,but leaf area increased first and then decreased and total number of tiller did not change significantly.

Key words: Sowing amount, Row spacing, Forage yield

摘要： 为明确青燕1号燕麦（Avena sativa L.）饲草生产适宜播量、行距和播种方式，本研究采用播量和行距两因素试验设计，设4个播量水平和5个行距水平，探究不同播量、行距下饲草产量变化，完善该品种在生产推广中的高产栽培技术。结果表明：播量和行距对鲜草和干草产量影响显著（P<0.05），同一播量下，二者产量随行距增大而减小，相同行距下，鲜草和干草产量随播量增大而增大；各处理间以播量S4、行距R1最优。不同播种方式下撒播以播量S4鲜草和干草产量最高，分别达36.324 t·hm^-2和11.330 t·hm^-2；与撒播相比条播增产效益明显，条播鲜草、干草最高产量、最低产量均显著高于撒播最高产量。不同收获时期下，以乳熟期鲜草和干草产量最佳，分别达102.562 t·hm^-2和30.504 t·hm^-2，较抽穗期高4.51倍和3.81倍。不同播量、行距下，株高、茎粗、叶面积和总分蘖数随播量增加先增大后减小，随行距增加株高、茎粗呈上升趋势，叶面积则先升高后降低，总分蘖数变化规律不明显。

关键词: 播量, 行距, 饲草产量