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张先凤,朱安宁,张佳宝,杨文亮,车 威.集约化种植下潮土养分肥力与团聚体特征相互关系研究[J].土壤,2017,49(1):33-39. ZHANG Xianfeng, ZHU Anning, ZHANG Jiabao, YANG Wenliang and CHE Wei.Research on Relationship Between Soil Nutrient Fertility and Aggregation of Fluvo-aquic Soil Under Intensive Cultivation[J].Soils,2017,49(1):33-39 本文二维码信息
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集约化种植下潮土养分肥力与团聚体特征相互关系研究
Research on Relationship Between Soil Nutrient Fertility and Aggregation of Fluvo-aquic Soil Under Intensive Cultivation
投稿时间: 2016-01-28  最后修改时间: 2016-03-31
DOI:10.13758/j.cnki.tr.2017.01.006
中文关键词:  集约化种植  潮土  养分肥力  团聚体特征  相关性
Key Words:Intensive cultivation  Fluvo-aquic soil  Nutrient fertility  Aggregation  Correlation
基金项目:国家重点研发计划项目(2016YFD0200304)、国家自然科学基金项目(41471239)和中国科学院科技服务网络计划(STS计划)项目(KFJ-SW-STS-142)资助。
作者单位E-mail
张先凤 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)封丘农业生态实验站 xfzhang@issas.ac.cn 
朱安宁 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)封丘农业生态实验站 anzhu@issas.ac.cn 
张佳宝 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)封丘农业生态实验站  
杨文亮 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)封丘农业生态实验站  
车 威 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)封丘农业生态实验站  
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中文摘要:
      通过测定封丘潮土7个肥力指标有机质、全氮、碱解氮、全磷、有效磷、全钾和速效钾,并利用主成分分析方法划分为3种肥力等级(一等、二等和三等肥力),研究了集约化种植条件下潮土养分肥力与团聚体特征的相互关系。结果表明:3种肥力等级下,大团聚体的质量比例最高,微团聚体居中,而粉黏粒最低。在0 ~ 5、5 ~ 10和10 ~ 20 cm土层,一等肥力下大团聚体的质量比例分别较三等肥力提高了25.5%、20.0% 和18.5%,而微团聚体的质量比例分别降低了54.3%、43.5% 和33.6%;一等肥力和二等肥力土壤团聚体的质量比例之间差异不显著。水稳性大团聚体的数量及其稳定性分别与由7个土壤肥力指标组成的养分肥力系统综合主成分得分F值呈线性正相关关系。7个肥力指标中,有机质、全氮和碱解氮与潮土大团聚体的质量比例及其稳定性显著正相关,并且这种相关性随着土壤深度增加而逐渐减弱。
Abstract:
      This study is to investigate the relationship between soil nutrient fertility and aggregate characteristics under intensive cultivation. Soil organic matter, total and alkali-hydrolyzable nitrogen, total and available phosphorus, and total and available potassium were selected for Fluvo-aquic soil in Fengqiu County as fertility indexes to form nutrient fertility system. Soil fertility was divided into three grades (first-, second- and third-grades) by principal component analysis. The results showed that mass proportion of aggregates was ranked as macro-aggregate > micro-aggregate > the free silt + clay fraction under each kind of fertility level. Compared to the third-grade fertility, mass proportions of macro-aggregates of the first-grade fertility in 0–5 cm, 5–10 cm and 10–20 cm layers increased by 25.5%, 20.0% and 18.5%, respectively, while those of the micro-aggregates decreased by 54.3%, 43.5% and 33.6%, respectively. No significant differences existed in aggregate distributions between the first- and second-grade fertility. Soil macro-aggregates and aggregate stability had significant linear positive correlation with the F-measure from principal component scores, and had significant positive correlation with soil organic matter, total and alkali- hydrolyzable nitrogen, but the correlation weakened with increase of soil depth.
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