北亚热带地区3种冷季型草坪草混播比例及播种量优化  

Optimization of Seeding Ratio and Seeding Rate of Three Cool-Season Turfgrasses in The Northern Subtropical Region

作　　者：赵小雪 崔高磊 李正华 罗富成[1] ZHAO Xiaoxue;CUI Gaolei;LI Zhenghua;LUO Fucheng(College of Animal Science and Technology,Yunnan Agricultural University,Yunnan 650201,China)

机构地区：[1]云南农业大学动物科学技术学院,云南昆明650201

出　　处：《草学》2023年第5期43-50,86,共9页Journal of Grassland and Forage Science

基　　金：国家级大学生创新创业训练项目“昆明市高磊草皮生产合作社模拟运作模式”(2019-03);云南农业大学2020年校级一流课程《草坪学》(2020YLKC041);云南农业大学2022年课程思政教改项目“基于草产品加工学的课程思政与案例构建”(YAUKCSZJG0031)共同资助。

摘　　要：为探究北亚热带地区3种冷季型草坪草在不同播种比例及不同播种量下混播草坪的质量,筛选较佳的混播草种组合,以草地早熟禾(Poa pratensis)、高羊茅(Festuca elata)、多年生黑麦草(Lolium perenne)为材料,设T1(10∶0∶0)(草地早熟禾∶高羊茅∶多年生黑麦草,下同)、T2(8∶1∶1)、T3(6∶3∶1)、T4(4∶5∶1)4个处理进行田间试验,通过测定草坪高度、叶片宽度、密度、盖度、绿度等指标筛选出最佳混播比例,在此比例上进一步设置15、20、25、30g/m^(2)4个播种量,确定混播草坪的最佳播种量。结果表明:T3混播比例草坪质量好,达到Ⅱ级标准;T4处理尚可,为Ⅲ级标准;T2处理质量差,为Ⅳ级标准;T1处理质量很差,仅为Ⅴ级标准。以6∶3∶1为最佳混播比例,播种量为30g/m^(2)时,草坪质量好,其次为25g/m^(2),二者均达到Ⅱ级标准;播种量为20g/m^(2)时,草坪质量尚可,为Ⅲ级标准;播种量15g/m^(2)时,草坪质量差,为Ⅳ级标准。因此,在昆明等北亚热带地区3种冷季型草坪草混播比例为60%草地早熟禾∶30%高羊茅∶10%多年生黑麦草,播种量为30g/m^(2)时,草坪质量最佳。To investigate the quality of mixed seeded lawns of three cool-season grasses in the northern subtropical region under differ-ent seeding ratios and different seeding amounts,to screen better mixed seeding combinations and to provide technical references for lawn establishment;Using Poa pratensis,Festuca elata,Lolium perenne as materials,There were four seeding ratios:T1(10∶0∶0)(Poa pratensis∶Festuca elata∶Lolium perenne,the same as below),T2(8∶1∶1),T3(6∶3∶1)and T4(4∶5∶1),and the best see-ding ratio was selected by measuring the height,leaf width,density,cover and greenness of the lawn.The best seeding ratio was selected by measuring the height,leaf width,density,cover,greenness and other indexes,on this ratio,further set four seeding rates such as 15、20、25、30g/m^(2),determine the best seeding amount for mixed lawn.The results showed that:the lawn quality of T3 mixed seeding ratio was good and reached the standard of grade II;T2 treatment was fair and reached the standard of grade III;T4 treatment was poor and was the standard of grade IV;T1 treatment was very poor and was only the standard of grade V.With 6∶3∶1 as the best mixed seeding ratio,the lawn quality was good when the seeding amount was 30g/m^(2),followed by 25g/m^(2),both of which reached the standard of grade II;the lawn quality was fair when the seeding amount was 20g/m^(2),and the lawn quality was good when the seeding amount was 25g/m^(2).When the seeding rate was 20g/m^(2),the lawn quality was fair and reached theⅢstandard;when the seeding rate was 15g/m^(2),the lawn quality was poor and the standard wasⅣ.Therefore,The lawn quality was good when the ratio of three cool-season grasses was 60%Poa praten-sis∶30%Festuca elata∶10%Lolium perenne and the seeding rate was 30g/m^(2).

关 键 词：冷季型草坪草 混播草坪 混播比例 播种量 草坪质量 

分 类 号：S688.4[农业科学—观赏园艺]