深松耕和绿肥还田对云南坡耕地耕层土壤物理性状的影响
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(云南农业大学 农学与生物技术学院,云南 昆明 650201)

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姚高乾(1994-),男,山西省运城人,在读硕士研究生,从事山区农业耕作措施及可持续发展研究。E-mail:312922723@

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基金项目:公益性行业(农业)科研专项基金项目(201503119-03-03);国家自然科学基金项目(31660378);云南省自然科学基金项目(2014FB144);云南省科技重大专项(2018BB015);云南省现代农业玉米产业技术体系建设(2016KJTX002)。


Effects of subsoiling tillage and green crop returning to sloping farmland on soil physical properties
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(Faculty of Agronomy and Biotechnology,Yunnan Agricultural University,Kunming Yunnan 650201)

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    摘要:

    利用间作、深松耕和绿肥还田对土壤耕层结构不同的改善作用,将三者集成于同一系统中以发挥各自优势并催生彼此间的协同效应,从而建立适宜持续改善坡耕地耕层结构的耕作措施。于2016~2019年以滇东北规模化种植模式玉米间作马铃薯为研究对象,在此基础上集成利用深松耕与绿肥还田措施。本试验设置6个处理,分别为:T1.玉米单作(对照);T2.玉米/苕子;T3.玉米‖马铃薯;T4.玉米‖马铃薯/苕子;T5.深松耕+玉

    Abstract:

    Utilizing the different effects of intercropping,subsoiling and green manure return to the soil on the structure of the soil plow layer,the three are integrated in the same system to give play to their respective advantages and promote synergies among them,thereby establishing farming measures suitable for continuous improvement. In 2016~2019,a large-scale planting model of maize intercropping potatoes in Northeast Yunnan was taken as the research object. Based on this,integrated measures of subsoiling and green manure return to the field were used.Six treatments were set up in this experiment,including T1. Single crop of maize;T2. Maize/Green manure;T3. Maize‖Potato;T4. Maize‖Potato/Green manure;T5. Subsoiling+ Maize/Green manure;T6. Subsoiling+ Maize‖Potato/Green manure. The effects of different measures on soil compaction,soil bulk density and soil shear force were studied. The results showed that the soil bulk density,compactness and shear force of the single cropping treatment were higher than those of the intercropping treatment in different planting modes. Among the 6 treatments,the soil bulk density,compactness,and shearing force of the Subsoiling+Maize‖Potato/Green manure treatment were lower than those of other treatments. The difference in corn harvest time was significant (P<0.05). Compared with the control,soil bulk density decreased by 4.60%,7.00%,3.86% and 3.17% in 4 years;compactness decreased by 16.98%,15.06%,30.82% and 16.75% in 4 years;the shear force decreased by 19.59%,47.72%,23.4% and 28.31% in 4 years.The overall research shows that the integrated application technology of corn intercropping potato with subsoiling and green manure return to the field can take advantage of their respective advantages to achieve continuous improvement of the structure of the soil plow layer,and provide a basis for the rational construction of the plow layer on the slope farmland in the mountainous area of Yunnan.

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姚高乾,周锋,吕小蓉,杨友琼,程易,吴伯志,安曈昕.深松耕和绿肥还田对云南坡耕地耕层土壤物理性状的影响[J].中国土壤与肥料,2021,(1):220-228.

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  • 收稿日期:2019-12-11
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  • 录用日期:2020-02-29
  • 在线发布日期: 2021-03-18