甘肃天祝高寒地区燕麦品种生产性能评价

Productive Evaluation on Different Oat(Avena sativa) Varieties in Alpine Region of Tianzhu

供试的 17个燕麦品种在高寒牧区生长期约 10 0 d,但种子不能成熟 ,均属中、晚熟型 ;其中永久 44 4、P6 7、加拿大和永久 40 4燕麦的生长速度较快 ,分别为 2 .70、2 .36、2 .2 2和 2 .0 2 cm / d。加拿大燕麦的绝对生长率最高 ,达 2 9.5 9g/ m2 · d,永久 1号的相对生长率最高 ,为 0 .0 72 g/ g· d。 P2 0的鲜、干草产量明显高于其他品种 ,分别达到 5 0 .5 5和 16 .18t/ hm2 ,永久 44 0的鲜、干草产量极低 ,仅为 17.2 2 t/ hm2 和 5 .5 1t/ hm2 。 P6 7、永久 44 4、0 6 6和罗马尼亚燕麦的茎叶比较小 ,叶量丰富、适口性好且营养成分含量高 ,品质较好。综合分析结果表明 ,P2 0、加拿大、P6 7和永久 44 4燕麦是天祝金强河地区建设高产、优质燕麦人工草地的理想品种。

Comparison study on oat varieties was conducted at Tianzhu Alpine Grassland Research Station of Jingqianghe Area,China.The results showed that in Jingqianghe area,the growth period of all the varieties of oat (Avena sativa) was nearly 100d,all of them were mid term mature or late mature varieties; Among them,No.444 Yongjiu,P67,Canadian Cultivator and No.404 Yongjiu grew rapidly,with 2.70cm/d、2.36cm/d、2.22cm/d and 2.02cm/d growth speed respectively; The variety of Canadian Cultivated had the highest absolute growth rate(AGR) and the variety of No.1 Yongjiu possessed the highest relative growth rate(RGR); The variety of P20 had the highest forage yield,with 50.55 and 16.18t/hm 2 of the fresh matter(FM) and dry matter(DM),while the variety of No.440 Yongjiu Oat possessed the lowest forage yield,with 17.22t/hm 2 FM and 5.51t/hm 2 DM: Compared with other Varieties,P67,No.444 Yongjiu,No.066 and Romania had lower stem/leaf ratio(S/L),more leaves and better palatability,their qualities were better,they were the better varieties to get high quality grassland.When combined all the measurements,it can be concluded that P20,CC,P67 and No.444 were the target varieties used for artificial oat grassland with high productivity and good quality in Jingqianghe area,the Tianzhu alpine region of China.