摘要
为探究高寒地区建植的一年生禾豆混播草地对土壤可持续利用效率及牧草营养品质的影响,试验以小黑麦(Triticale)、燕麦(Avena sativa)、饲用豌豆(Pisum sativa)为试验对象,设置不同混播组合及比例,对牧草营养品质及土壤养分等指标进行测定分析,采用灰色关联度进行综合评价。结果表明,燕麦+饲用豌豆(5∶5)、(3∶7)处理土壤有机碳含量较单播燕麦提高7.09%、11.94%,燕麦+饲用豌豆(5∶5)处理土壤全氮、全钾含量比单播燕麦提高59.80%、44.14%;小黑麦+饲用豌豆(5∶5)处理粗蛋白含量比单播小黑麦提高1.14%,燕麦+饲用豌豆(5∶5)处理粗脂肪、可溶性糖含量比单播燕麦提高6.72%、21.78%,燕麦+饲用豌豆(7∶3)处理NDF含量比单播燕麦降低8.67%,燕麦+饲用豌豆(5∶5)处理ADF含量比单播燕麦降低10.90%;通过灰色关联度评价对混播草地牧草产量及品质指标进行综合判定,燕麦+饲用豌豆(5∶5)混播比例建植时,牧草营养成分可达最优状态,适合在三江源区一年生混播草地建植应用。
In order to explore the effects of annual gram-bean mixed grassland planted in alpine region on soil sustainable use efficiency and forage nutrient quality, the experiment took Triticale、Avena Sativa and Pisum sativa as experimental objects, and set different mixed sowing combinations and proportions.The indexes of forage nutrient quality and soil nutrient were measured and analyzed, and the gray correlation degree was used for comprehensive evaluation.The results showed that: Compared with unicast Avena sativa, Avena sativa+Pisum sativa(5∶5) and(3∶7) treatments increased soil organic carbon content by7.09%and11.94%.Compared with unicast Avena sativa, Avena sativa+Pisum sativa(5∶5) increased soil total nitrogen and total potassium contents by 59.80%and44.14%. The crude protein content of Triticale+Pisum sativa(5∶5) treatment was1.14%higher than that of unicast Triticale.The contents of crude fat and soluble sugar in Avena sativa+Pisum sativa(5∶5) treatment were6.72%and21.78%higher than those in unicast Avena sativa.The NDF content of Avena sativa+Pisum sativa(7∶3) treatment was8.67%lower than that of unicast Avena sativa.The ADF content of Avena sativa+Pisum sativa(5∶5) treatment was10.90%lower than that of unicast Avena sativa. The yield and quality indexes of the mixed grassland were comprehensively determined by grey correlation evaluation.When the ratio of Avena sativa+Pisum sativa(5∶5) mixed planting was established, the nutrient composition of herbage could reach the optimal state, which was suitable for the establishment and planting of annual mixed planting grassland in the source region of three rivers.
作者
钱诗祎
德科加
冯廷旭
向雪梅
林伟山
QIAN Shi-yi;DE Ke-jia;FENG Ting-xu;XIANG Xue-mei;LIN Wei-shan(College of Agriculture and Animal Husbandry of Qinghai University,Xining 81001,China;Academy of Animal and Veterinary Science,Qinghai University,Xining 810016,China)
出处
《青海畜牧兽医杂志》
2022年第4期34-40,共7页
Chinese Qinghai Journal of Animal and Veterinary Sciences
基金
国家重点研发计划(青藏高原社区饲草稳产提质关键技术研究,2018YFD0502402)
三江源生态系统教育部野外科学观测研究站资助。
关键词
高寒地区
禾豆混播
土壤养分
牧草营养
Alpine area
Grass-legume mixture
Soil nutrients
Forage grass nutrition
