轮作方式对连作茭白土壤理化性质的影响

打开文本图片集

中图分类号 S156 文献标志码A 文章编号 1007-7731（2026）07-0022-05

DOI号 10.16377/j.cnki.issn1007-7731.2026.07.006

Effects of rotation systems on physical and chemical properties of soil in continuous Zizania latifolia cultivation

Zhou Wenbin1Zhao Chengsen² Chi Yongqing³ Wu Dongtao2.，3

（Jinyun County Bureau of Agriculture and Rural Affairs， Jinyun 3214Oo，China; ²Lishui University，Lishui 3230o0， China; 3Soil Fertilizerand Plant Protection and Energy Sources Station of Lishui City，Lishui 3230oo， China）

AbstractTo explore the remediation effcts of rotation systems on thedegraded soil inthe cultivated layer of Zizanialatifolia，3rotationsystems of Zzanialatifolia-maize，Zizania latifolia-rice，and Zizania latifolia-taro wereset up.The aim was to studythe impacts of these3rotation systems onsoil structure，soil nutrients，and other physical and chemical properties of the cultivated layer after long-term planting of Zizania latifolia.Theresults showed that compared with continuous Zizania latifoliacultivation，therotation systems of Zizania latifolia-maizeand Zizania latifolia-taro could remarkably increase（ P <0.05）the soil porosity and raise the proportion of water-stable aggregates （ ⩾ （20 2 mm）in the soil. Under the 2 rotation systems，the proportion of water-stable macropores （ ⩾2 mm） increased by 7.68% （2号 and 9.00% respectively，and the effective soil pores increased by 28.23% and 21.19% respectively. The rotation systems of Zizania latifolia-maizeand Zizania latifolia-taro could significantly increase the soil pH value（ P <0.05）. After the rotation， the soil pH value increased to a range of 5.79-5.82.The rotation systems of Zizania latifolia-rice， Zizania latifolia-maize，andZizania latifolia-tarocould significantlyreduce thecontents of soilorganic mater，available nitrogen， available phosphorus，and available potassium P<0.05 ）.All these indicators were maintained within a relativelyreasonablerange，thusreducing therisk of environmental pollution.Interms of economic benefits，among the threerotationsystems，the Zizania latifolia-corn rotationshowed the best total benefit，reaching 17786.5yuan/667 m2. Inconclusion，thethreerotationsystems inthis studycanimprovethephysicalandchemicalpropertiesofdegradedsoil. In terms of economic benefits，the rotation system of Zizania latifolia-maize performs the best.

KeywordsZizania latifolia;paddy-upland rotation;remediationof degraded soil;soil physical and chemical properties

长期连作淹水种植茭白会导致土壤结构逐渐退化，土壤犁底层变薄。（剩余6136字）