北方农业学报 ›› 2019, Vol. 47 ›› Issue (2): 26-35.doi: 10.3969/j.issn.2096-1197.2019.02.06

• 著者文摘 • 上一篇    下一篇

不同改良剂对盐碱地苜蓿生长及丛枝菌根共生的影响

吴澜[1];乌恩[1,2];钱洁鑫[1];乌音嘎[1];春花[3]   

  1. [1]内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特010010;[2]内蒙古土壤质量与养分资源重点实验室,内蒙古呼和浩特010010;[3]扎兰屯市气象局,内蒙古扎兰屯162650
  • 收稿日期:2019-02-02 出版日期:2019-02-19 发布日期:2019-08-19
  • 作者简介:吴澜(1993—),男,硕士研究生,研究方向为植物营养;通讯作者:乌恩(1961-),男,教授,博士,主要从事草地营养、草地菌根、退化草地修复等研究工作。
  • 基金资助:
    内蒙古自治区科技重大专项资助项目.

Effects of different amendments on alfalfa growth and arbuscular mycorrhizal symbiosis in saline-alkali soil

WU Lan[1];WU En[1,2];QIAN Jiexin[1];WU Yinga[1];CHUN Hua[3]   

  1. [1]College of Grassland and Resources and Environment,Inner Mongolia Agricultural University,Hohhot 010010,China;[2]Inner Mongolia Key Laboratory of Soil Quality and Nutrient Resoures,Hohhot 010010,China;[3]Zhalantun Meteorologic Bureau,Zhalantun 162650,China
  • Received:2019-02-02 Online:2019-02-19 Published:2019-08-19

摘要: 为探讨不同土壤改良剂对盐碱地苜蓿种植的效应,该研究对内蒙古农业大学海流图科技园区的盐碱土紫花苜蓿地,开展了施用不同土壤改良剂对苜蓿生长与丛枝菌根共生影响的试验。结果表明:改良剂有效促进了苜蓿生长与丛枝菌根共生,但不同改良剂处理对苜蓿各项指标的影响不同。其中,有机肥+改良剂T处理株高、产量和叶片SPAD值最大,分别比对照高27.1%、126.2%和4.0%;改良剂E处理叶重、叶/茎和菌根侵染率最大,分别比对照高64.5%、42.1%和59.9百分点;复合肥+有机肥+改良剂E处理茎重最大,比对照高19.2%;复合肥+有机肥+改良剂T+改良剂E处理碳含量最大,比对照高87.4%;改良剂T处理氮含量最大,比对照高291.4%,此处理碳/氮最小,比对照低67.3%;改良剂T+改良剂E处理磷含量最大,比对照高246.5%;复合肥+有机肥+改良剂T处理根围菌根菌孢子密度最大,是对照的7.8倍。根据改良剂对苜蓿各指标的影响效果和各指标的实际利用价值,对不同处理进行了综合评分,各处理得分排序由大到小依次为:改良剂E(10.35)>改良剂T(8.61)>有机肥+改良剂T(8.12)>复合肥+有机肥+改良剂T(7.76)>复合肥+改良剂T+改良剂E(7.51)>有机肥+改良剂T+改良剂E(7.49)>复合肥+改良剂E(7.43)>有机肥+改良剂E(7.34)>复合肥+有机肥+改良剂E(6.99)>复合肥+改良剂T(6.50)>复合肥+有机肥+改良剂T+改良剂E(5.98)>改良剂T+改良剂E(5.42)>对照(1.50)。根据不同改良剂处理对盐碱地苜蓿种植的效应可知:在与试验地理化性质相似的盐碱土上种植苜蓿,改良剂E、改良剂T和有机肥+改良剂T3种处理对苜蓿种植的效应较好。

关键词: 改良剂;盐碱土;苜蓿生长;菌根共生

Abstract: This study examined the effects of applying different soil amendments on the growth and arbuscular mycorrhizal symbiosis of saline-alkali soil alfalfa in the Hailiutu science park-area of Inner Mongolia Agricultural University.Soil amendments effectively promoted the growth of alfalfa and the arbuscular mycorrhizal symbiosis,but the effects of different amendments on alfalfa growth and mycorrhizal indices were different.Among them,the greatest plant height,plant yield,and leaf SPAD were observed in the organic fertilizer+amendment T treatment,and were 27.1%,126.2% and 4.0% higher than the control,respectively.The amendment E produced the largest leaf weight,the largest leaf/stem ratio,and the largest mycorrhizal infection rate,and were 64.5%,42.1%,and 59.9% higher than that of the control,respectively.The stem weight of alfalfa was greatest in the compound fertilizer+organic fertilizer+amendment E treatment,and was 19.2% higher than that of the control.The C content of alfalfa in the compound fertilizer+organic fertilizer+amendment T+amendment E treatment was the highest,being 87.4% greater than the control.The content of N in alfalfa in the amendment T treatment was the largest,while the C/N ratio was the smallest,being 291.4% higher and 67.3% lower than the control,respectively.The P content of alfalfa in the amendment T+amendment E was the largest,and was 246.5% higher than the control;the rhizosphere mycorrhizal spore density in the compound fertilizer+organic fertilizer+amendment T treatment was the highest,being 7.8 times that of the control.According to the effect of different amendments on the various indices and the use value of each index,a comprehensive score was calculated for the different treatments:amendment E(10.35)>amendment T(8.61)>organic fertilizer+amendment T(8.12)>compound fertilizer+organic fertilizer+amendment T(7.76)>compound fertilizer+amendment T+amendment E(7.51)>organic fertilizer+amendment T+amendment E(7.49)>compound fertilizer+amendment E(7.43)>organic fertilizer+amendment E(7.34)>compound fertilizer+Organic fertilizer+amendment E(6.99)>compound fertilizer+amendment T(6.50)>compound fertilizer+organic fertilizer+amendment T+amendment E(5.98)>amendment T+amendment E(5.42)>control(1.5).From the effects of the different amendments on the growth of the mycorrhizal mantle,for alfalfa planted on alkaline earth soil with similar characteristics to that of the experiment,the best results will be obtained from using amendment E,amendment T and organic fertilizer+amendment.

Key words: Amendment;Saline-alkali soil;Alfalfa growth;Mycorrhizal symbiosis

中图分类号: 

  • S156.4