利用土壤线虫生态指标表征砂姜黑土土壤健康状况的探讨

耿文敬; 曹森; 樊琼; 张鑫; 齐俊; 王晓飞; 朱江; 郭肖颖

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利用土壤线虫生态指标表征砂姜黑土土壤健康状况的探讨
耿文敬^1,2,曹森^1,2,樊琼²,张鑫^2,3,齐俊^2,4,王晓飞³,朱江^1,郭肖颖^2
1.安徽农业大学资源与环境学院, 合肥 230036;2.安徽省农业科学院农业工程研究所, 合肥 230031;3. 合肥学院生物食品与环境学院, 合肥 230601;4. 合肥工业大学资源与环境工程学院, 合肥 230009

摘要:

为探讨利用土壤线虫生态指标表征土壤健康状况的可行性，以安徽省农业科学院蒙城砂姜黑土有机肥长期定位试验基地为研究地点，以土壤线虫为研究对象，通过分析长期定位施肥条件下，农田土壤线虫数量、营养类群、生态指数的变化与土壤肥力水平的相关性，并进一步关联作物的产量指标。结果表明:砂姜黑土土壤肥力水平的等级由高到低依次为牛粪配施(NPK+CM)>猪粪配施(NPK+PM)>秸秆配施(NPK+S)>单施化肥(NPK)>不施肥(CK)；随着土壤肥力水平的提高，线虫香农多样性指数、均匀度指数和瓦斯乐斯卡指数显著提高，植物寄生线虫成熟度指数显著降低，土壤健康状况变好；同时，NPK、NPK+S、NPK+PM、NPK+CM的产量较CK分别提升了337.87%、396.14%、495.43%、534.24%。因此，利用线虫生态指标的变化来表征砂姜黑土的土壤健康状况具有一定的可行性。

关键词: 长期定位施肥砂姜黑土土壤线虫生态指标土壤健康状况

DOI：10.11841/j.issn.1007-4333.2021.12.18

分类号:

基金项目:国家自然科学基金项目(21407002)；安徽省自然科学基金项目(1508085MB39)；农业部农村可再生能源开发利用重点实验室开放课题(2018-007)

Characterization of soil health by soil nematode ecological index in mortar black soil

GENG Wenjing^1,2,CAO Sen^1,2,FAN Qiong²,ZHANG Xin^2,3,QI Jun^2,4,WANG Xiaofei³,ZHU Jiang^1*,GUO Xiaoying^2*

1.School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China;2. Institute of Agricultural Engineering, Anhui Academy of Agricultural Science, Hefei 230031, China;3. School of Biological Food and Environment, Hefei University, Hefei 230601, China;4. School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China

Abstract:

Soil nematodes are widely distributed in the soil environment and their ecological indices are closely related to soil health. To explore the feasibility of using soil nematode ecological indices to characterize soil health status, soil nematode was taken as the research object by taking mortar black soil in the Mengcheng County of Anhui Province. The correlations among the total number of soil nematodes, nutritional groups, ecological indicators of soil nematodes and soil fertility conditions were analyzed. The crop yield indexes under the condition of long-term fertilization were determined. The results showed that: The soil fertility level of each fertilization treatment from high to low was NPK+PM>NPK+CM>NPK+S>NPK>CK; With the increase of soil fertility level, the Shannon-Weaver diversity index, the evenness index and Wasilewska index increased significantly, while the plant parasitic nematode maturation index decreased remarkably, and the soil became healthier; Meanwhile, compared with CK, the yields of NPK, NPK+S, NPK+PM and NPK+CM treatments increased by 337. 87%, 396. 14%, 495. 43% and 534. 24%, respectively. The results indicated that the changes of nematode ecological indicators could be used to characterize soil health.

Key words: long-term location fertilization mortar black soil soil nematodes ecological indicators soil health state

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