青海省甘德县燕麦+毛苕子+豌豆混播比例生产性能的综合评价

Comprehensive evaluation on productivity of oat+hairy vetch+pea mixed sowing in Gande County,Qinghai Province

摘要:

为筛选出适宜青海省三江源区燕麦、毛苕子和豌豆混播的最佳比例,在青海省甘德县进行了燕麦、毛苕子和豌豆不同混播比例的研究。结果表明:在供试5个混播比例中,燕麦70%+毛苕子10%+豌豆20%处理下的燕麦、毛苕子、豌豆的株高及单株产量均最高,较燕麦单播分别提高13.6%和54.8%。燕麦70%+毛苕子10%+豌豆20%下的混合牧草干草产量和粗蛋白含量均最高,分别为15 793 kg/hm2和5.54%,显著高于燕麦单播、燕麦70%+豌豆30%、燕麦70%+毛苕子30%处理(P＜0.05),较燕麦单播分别提高56.8%和57.4%。燕麦70%+毛苕子10%+豌豆20%下的混合牧草中性洗涤纤维含量和酸性洗涤纤维含量最低,分别为53.06%和32.2%,较燕麦单播分别降低7.7%和10.5%。利用混合草的干草产量、粗蛋白含量、可溶性糖含量、淀粉含量、中性洗涤纤维含量和酸性洗涤纤维含量进行隶属函数值综合评价,得出青海省甘德县最佳混播比例为燕麦70%+毛苕子10%+豌豆20%。

Abstract:

In order to select the optimal ratio of Avena sativa,Vicia villosa,and Pisum sativum for mixed in the high-cold area of Sanjiangyuan,Qinghai Province,a study was conducted on different mixed sowing ratios of Avena sativa,Vicia villosa,and Pisum sativum in Gande County,Qinghai Province.The results showed thatthe plant height and yield per plant of Avena sativa,Vicia villosa,and Pisum sativum under the treatment of Avena sativa 70%+Vicia villosa 10%+Pisum sativum 20% were the highest among the 5 mixed seeding ratios tested,which were 13.6% and 54.8% higher than the Avena sativa unicast,respectively.The hay yield and crude protein content of the mixed forage under the treatment of Avena sativa 70% +Vicia villosa 10% +Pisum sativum 20% were the highest,respectively 15 793 kg/hm2 and 5.54%,which was significantly higher than Avena sativa unicast,Avena sativa 70%+Vicia villosa 30%,and Avena sativa 70%+Pisum sativum 30% (P＜0.05),and 56.8% and 57.4% higher than the Avena sativa unicast.The content of neutral washing fiber and acid washing fiber in the mixed forage of Avena sativa 70%+Vicia villosa 10%+Pisum sativum 20% were the lowest,which was 53.06% and 32.2%,respectively,and 7.7% and 10.5% lower than that of Avena sativa unicast.Based on the comprehensive evaluation of membership function values using hay yield,crude protein content,soluble sugar content,starch content,acid washing fiber content,and neutral washing fiber content of mixed grass,the optimal mixed ratio of Avena sativa,Vicia villosa and Pisum sativum was Avena sativa 70%+Vicia villosa 10%+Pisum sativum 20%.