污泥添加对盐碱土性质及冷季型草坪草生长的影响  

Effects of Sludge Composting on Soil and Growth of Cold Season Turfgrass

作　　者：赵嘉林 王雷[1] ZHAO Jialin;WANG Lei(College of Forestry,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia O10018)

机构地区：[1]内蒙古农业大学林学院,内蒙古呼和浩特010018

出　　处：《北方园艺》2023年第3期64-71,共8页Northern Horticulture

基　　金：国家重点研发计划资助项目(2017YFD0600903-03);内蒙古自治区科技计划资助项目(2020GG0067);内蒙古农业大学高层次人才引进资助项目(170014)。

摘　　要：以北方地区常用的草地匍匐剪股颖(Agrostis stolonifera L.)、草地早熟禾(Poa pratensis L.)、高羊茅(Festuca elata Keng ex E.Alexeev)为试材,以盐碱土为空白对照(CK),营养土为参照(S),污泥堆肥比例为5%、10%、20%、40%、60%做试验处理,正常养护管理45 d后,测定草坪草苗高根长、鲜质量干质量、相对电导率、叶绿素、可溶性糖、游离脯氨酸、丙二醛(MDA)含量各项指标变化,研究了堆肥污泥对盐碱土壤理化性质的影响和作用于3种冷季型草坪草生长发育的影响,以期降低盐碱地区草坪草生产成本,提高绿化率。结果表明:1)随着污泥施加量增加,土壤理化性质得到显著改善,容重降低0.46%~37.40%、总孔隙度和毛管孔隙度分别升高0.66%~53.82%和2.69%~72.29%,土壤pH、含盐量分别下降1.94%~11.19%、10.07%~23.49%。2)随着污泥施加量比例增加,改良后的盐碱土作为基质对3种草坪草生长促进作用趋势为先升后降。匍匐剪股颖、草地早熟禾、高羊茅分别在污泥堆肥添加量为20%、10%、20%时表现最佳。综上可知,施加定量污泥堆肥可以有效改良盐碱土性质,提高草坪草生长质量。Agrostis stolonifera L.,Poa pratensis L.and Festuca elata Keng ex E.Alexeev, which were commonly used in northern China, were used as the materials, and saline-alkali soil was used as blank control(CK).Nutrient soil was used as reference(S),and the proportion of sludge compost was 5%,10%,20%,40% and 60% for experimental treatment.After 45 days of normal maintenance and management, the changes of seedling height and root length, fresh and dry weight, relative electrical conductivity, and contents of chlorophyll, soluble sugar, free proline and malondialdehyde(MDA) were measured.The effects of compost sludge on the physical and chemical properties of saline-alkali soil and on the growth and development of three cold season turfgrasses were studied, in order to reduce the production cost of turfgrass in saline-alkali area and improve the greening rate.The results showed that, 1) with the increase of sludge application, soil physicochemical properties were significantly improved, the bulk density decreased by 0.46%-37.40%,the total porosity and capillary porosity increased by 0.66%-53.82% and 2.69%-72.29%,respectively.Soil pH and salt content decreased by 1.94%-11.19% and 10.07%-23.49%,respectively.2) With the increasing of sludge application ratio, the growth promotion trend of the improved saline-alkali soil as the substrate was first increased and then decreased.When the sludge compost content was 20%,10% and 20%,respectively, the results showed the best performance.In conclusion, applying quantitative sludge compost can effectively improve the properties of saline-alkali soil and the growth quality of turf grass.

关 键 词：堆肥污泥 土壤理化性质 植物生理生化指标 冷季型草坪草 

分 类 号：S688.4[农业科学—观赏园艺]