氮、钾不同配比施肥对燕麦产量和品质的影响

以白燕7号燕麦Avena sativa cv. Baiyan No.7为材料，研究了不同配比的氮(N)肥和钾(K)肥对种子产量构成因素（穗数、穗粒数、千粒重、穗粒重）、种子产量、秸秆产量及品质的影响。结果表明，施氮和施钾对穗数、穗粒数、千粒重、穗粒重、种子产量、秸秆产量都有显著的影响（P＜0.05）， 随着施肥量的增加呈先增后降的变化趋势；施氮和施钾与种子和秸秆产量之间呈显著的线性回归关系(R2=0.862,P＜0.05；R2=0.838,P＜0.05)；N75K105水平下，燕麦种子产量、秸秆产量均最高，分别为4.90×103和9.86×103 kg/hm2；燕麦籽粒中粗蛋白、粗脂肪和粗纤维含量随着施肥量的不同有规律性的变化。

Effects of nitrogen and potassium fertilizer on yield and quality of oat

Studying effect of different ratio of N,K fertilizer of Baiyan No.7 oats on seeds yield (spikes,weight per 1 000 seeds,seeds of each spike weight,grains of each spike)seeds yield,straw yield and quality. The results showed that inputting N and K fertilizer have significant effect on  spikes,weight per 1 000 seeds,seeds of each spike weight,grains of each spike,seed yield and straw yield (P＜0.05).They tend to change from increasing to decreasing with inputting fertilizer increasing. There is significant linage regress between inputting N、K and seeds, straw yield(R2=0.862, P＜0.05；R2=0.838, P＜0.05)；At the level of N75K105 seeds,straw yield reach highest,with 4.90×103 kg/hm2 and 9.86×103 kg/hm2 respectively. The crude protein、crude fat and crude fiber content in oat seeds change regularly with inputting different amount of fertilizer.