播种行距和播量对发草生产性能的影响  

Effect of Row Spacing and Sowing Rate on Production Performance of Deschampsia caespitosa

作　　者：汪海波 王彦龙[2] WANG Hai-bo;WANG Yan-long(Forestry and Grassland Station of Guoluo Tibetan Autonomous Prefecture,Dawu 814000;Academy of Animal and Veterinary Science,Qinghai University,Key Laboratory of Alpine Grassland Adaptive Management of Qinghai Provincial,Key Laboratory of Alpine Grassland Ecology of the Ministry of Education in Sanjiangyuan Region,Xining 810016,China)

机构地区：[1]青海省果洛藏族自治州林业和草原站,青海大武814000 [2]青海大学畜牧兽医科学院,青海省高寒草地适应性管理重点实验室,三江源区高寒草地生态教育部重点实验室,青海西宁810016

出　　处：《青海畜牧兽医杂志》2022年第4期18-22,共5页Chinese Qinghai Journal of Animal and Veterinary Sciences

基　　金：2019年度青海三江源生态保护和建设二期工程科研和推广项目(2019-S-1-4)。

摘　　要：在田间试验条件下,设置了4个播种量(4.5 kg·hm^(-2)、7.5 kg·hm^(-2)、10.5 kg·hm^(-2)和13.5 kg·hm^(-2))和2个种植行距(15 cm和30 cm)共8个处理,通过连续2年测定发草种子产量和牧草产量,研究分析不同行距和播种量对发草生产性能的影响。结果表明,行距和播种量对发草种子产量和牧草产量均有显著的影响,在一定范围内种子产量和干草产量随播种量的增加呈现先增加后减小的趋势,且在行距30 cm、播种量10.5 kg·hm^(-2)种植条件下牧草产量相对较高,可达4124.2 kg·hm^(-2);而种子产量在行距30 cm、播种量7.5 kg·hm^(-2)配置下较优,可达465.6 kg·hm^(-2)。In the field experiment,four seeding rates(4.5 kg·hm^(-2),7.5 kg·hm^(-2),10.5 kg·hm^(-2) and 13.5 kg·hm^(-2))and two planting row spacing(15 cm and 30 cm)were set for 8 treatments.The effects of different row spacing and seeding amount on grass production were studied by measuring seed yield and forage yield for two consecutive years.The results showed that row spacing and sowing amount had significant effects on grass seed yield and herbage yield.Within a certain range,seed yield and hay yield increased firstly and then decreased with the in-creasing of sowing amount,and the herbage yield was relatively high under the condition of row spacing of 30 cm and sowing amount of 10.5 kg·hm^(-2),reaching 4124.2 kg·hm^(-2).The seed yield was 465.6 kg·hm^(-2) under 30 cm row spacing and 7.5 kg·hm^(-2) seeding rate.

关 键 词：行距 播量 发草 生产性能 

分 类 号：S542.9[农业科学—作物学]