王庆宇,李立军,阮慧,周红生,李晓婷.旱地燕麦间作对土壤酶活性、微生物含量及产量的影响[J].干旱地区农业研究,2019,37(2):179~184
旱地燕麦间作对土壤酶活性、微生物含量及产量的影响
Effects of intercropping of oat on soil enzyme activity, microbial content and yield in arid land
  
DOI:10.7606/j.issn.1000-7601.2019.02.26
中文关键词:  燕麦;间作;土壤酶活性;土地当量比;产量  旱地
英文关键词:oat  intercropping  soil enzyme activity  land equivalent ratio  yield  arid land
基金项目:国家自然科学基金项目“北方生态脆弱区农牧复合种植模式保水固碳机制及系统评价研究”(31660374);公益性行业(农业)科研专项课题“北方一熟农牧交错区耕地培肥与农牧结合农作制研究与示范”(201503120)
作者单位
王庆宇 College of Agricultural Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010010, China 
李立军 College of Agricultural Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010010, China 
阮慧 College of Agriculture Sciences,Nanjing Agricultural University,Nanjing, Jiangsu 210095, China 
周红生 College of Plant Protection,Northwest A&F University,Yangling, Shaanxi 712100, China 
李晓婷 College of Agricultural Sciences, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010010, China 
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中文摘要:
      本文通过研究内蒙古旱作区禾本科、豆科及茄科间作对土壤生物性状的影响,旨在揭示燕麦(Avena sativa Linn)与不同作物间作及其单作在土壤酶活性、微生物量及土地当量比(LER)等方面的优势机理。本试验设置燕麦、黑豆(Glycinemax(L.)merr)、苜蓿(Medicago sativa)、马铃薯(Solanum tuberosum L)单作和黑豆间作燕麦、苜蓿间作燕麦、马铃薯间作燕麦共7个处理,探讨各处理对上述各指标的影响。结果表明:燕麦间作黑豆土地当量比最高,2015年和2016年分别为1.62和1.65。燕麦间作黑豆土壤脲酶活性和蔗糖酶活性较苜蓿间作燕麦、马铃薯间作燕麦显著提高了5.00%~51.61%和5.73%~52.29%。2015年和2016年播种后75 d苜蓿间作燕麦土壤过氧化氢酶活性显著高于黑豆间作燕麦,分别提高了29.47%和40.56%。黑豆间作燕麦对比其他两间作处理土壤微生物的生物量碳、氮含量分别显著提高了2.70%~17.89%和11.36%~26.47%,土壤脲酶活性提高了1.51%~55.22%,蔗糖酶活性提高了5.73%~52.29%,是该地区最优的间作模式。
英文摘要:
      In this paper, the effects of intercropping of gramineae, leguminous and solanaceae on soil biological characters were studied in arid farming area in Inner Mongolia, in order to reveal the dominant mechanism of oat(Avena sativa Linn)on soil enzyme activity, microbial biomass, and land equivalent ratio(LER) compared with intercropping of different crops. There were 7 treatments including sole crop of oat, black bean (Glycinemax (L.) merr), alfalfa (Medicago sativa), potato (Solanum tuberosum L) and intercropping of black bean with oats, alfalfa with oats and potato with oats. The advantages of this mechanism were analyzed for the nature of indicators such as soil enzyme activity and land equivalent ratio. The results showed that the highest equivalent ratio of black bean land was 1.62 and 1.65 in 2015 and 2016, respectively. The soil urease activity and invertase activity of black bean intercropped with oats were significantly increased by 5.00%~51.61% and 5.73%~52.29% compared with alfalfa with oats and potato with oats. The soil catalase activity of alfalfa with oats was significantly higher than that of black bean with oats, 29.47% and 40.56% in 2015 and 2016, respectively. The carbon and nitrogen contents in soil microbial biomass were significantly increased by 2.70%~17.89% and 11.36%~26.47% by the black bean with oat intercropping in those two years. The soil urease activity was increased by 1.51%~55.22% and the sucrase activity was increased by 5.73%~52.29%. Thus, it is the best intercropping mode in the region and can provide theoretical basis.
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