黄壤稻田土壤微生物生物量碳磷对长期不同施肥的响应

doi:10.13287/j.1001-9332.201904.020

应用生态学报 ›› 2019, Vol. 30 ›› Issue (4): 1327-1334.doi: 10.13287/j.1001-9332.201904.020

黄壤稻田土壤微生物生物量碳磷对长期不同施肥的响应

李渝^1,2, 刘彦伶^1,2, 白怡婧^1,2, 张雅蓉^1,2, 黄兴成^1,2, 张文安^1,2, 蒋太明^2,3*

¹贵州省农业科学院土壤肥料研究所, 贵阳 550006;
²农业农村部贵州耕地保育与农业环境科学观测实验站, 贵阳 550006;
³贵州省农业科学院茶叶研究所, 贵阳 550006

收稿日期:2018-12-06 出版日期:2019-04-20 发布日期:2019-04-20
通讯作者: * E-mail: jtm532@163.com
作者简介:李渝,男,1983年生,硕士,副研究员. 主要从事土壤环境质量方面的研究. E-mail: liyu83110@163.com
基金资助:
本文由贵州省科技计划项目(黔科合基础[2018]1154和黔科合支撑[2017]2852)、贵州省农业科学院青年基金项目(黔农科院青年基金[2018]19号)、贵州省农业科学院科技创新专项(黔农科院科技创新[2017]06号)、国家自然科学基金项目(31860132)和贵州省科技平台及人才团队计划项目(黔科合平台人才[2018]5604号)资助

Responses of soil microbial biomass C and P to different long-term fertilization treatments in the yellow paddy soil

LI Yu^1,2, LIU Yan-ling^1,2, BAI Yi-jing^1,2, ZHANG Ya-rong^1,2, HUANG Xing-cheng^1,2, ZHANG Wen-an^1,2, JIANG Tai-ming^2,3*

¹Institute of Soil and Fertilizer, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China;
²Scientific Observing and Experimental Station of Arable Land Conservation and Agriculture Environment Guizhou, Ministry of Agriculture and Rural Affairs, Guiyang 550006, China;
³Institute of Tea Research, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China

Received:2018-12-06 Online:2019-04-20 Published:2019-04-20
Contact: * E-mail: jtm532@163.com
Supported by:
This work was supported by the Science and Technology Project of Guizhou Province (Guizhou, [2018]1154, Guizhou [2017]2852), Youth Fund of Guizhou Academy of Agricultural Sciences (Guizhou [2018]19), Independent Innovation Project of Guizhou Academy of Agricultural Sciences (Guizhou [2017]06), National Natural Science Foundation of China (31860132), and Science and Technology Platform and Talent Team Plan of Guizhou Province (Guizhou [2018]5604).

摘要/Abstract

摘要： 本研究以进行了22年的黄壤稻田长期定位试验为依托,分析了不同施肥模式下土壤碳(C)、磷(P)与微生物生物量C(MBC)、P(MBP)的变化及其耦合特征,旨在探讨黄壤地区合理培肥模式以提高土壤磷素有效性.试验包括10个处理,分别为不施肥(CK)、单施氮肥(N)、磷钾配合(PK)、氮钾配合(NK)、氮磷配合(NP)、氮磷钾配合(NPK)、单施有机肥(M)、3种有机无机肥配施(1/4M+3/4NP、0.5MNP、MNPK).结果表明:与不施肥相比,N和NK处理土壤有机碳(TOC)、全磷(TP)、MBC、MBP均有不同程度的降低,施磷处理(PK、NP、NPK)则有不同程度的提升;与不施肥和施用无机肥相比,施用有机肥各处理TOC、MBC、MBP及MBP/TP均显著增加,其中M和MNPK处理增幅最大.MBC/MBP、TOC/MBP、MBC/TP以施用有机肥处理最低,N处理最高.土壤MBC、MBP及其耦合关系与土壤TOC和有效磷均呈极显著相关,TOC是影响MBC、MBP、MBP/TP的直接因素,而有效磷则是影响MBC/MBP、TOC/MBP、MBC/TP的直接因素.土壤MBP及碳、磷耦合关系各指标可以有效区分单施化肥和施用有机肥的不同施肥方式,可作为评价黄壤稻田磷素肥力的生物学指标.配施有机肥是增加黄壤稻田磷有效性、提高土壤供磷潜力和保持土壤生物健康的有效途径.

关键词: 长期施肥, 微生物生物量磷, 碳、磷耦合, 微生物生物量碳, 黄壤稻田

Abstract: To explore the rational fertilization mode to improve the availability of soil phosphorus (P), we analyzed the changes and coupling characteristics of soil carbon (C) and P, microbial biomass C (MBC) and P (MBP) under different fertilization modes with a successive 22-year field experiment in yellow paddy soil. The experiment had 10 treatments, including no fertilization (CK), single application of nitrogen (N), combination of phosphorus and potassium (PK), combination of nitrogen and potassium (NK), combination of nitrogen and phosphorus (NP), combination of nitrogen, phosphorus and potassium (NPK), single application of organic fertilizer (M), and three organic-inorganic fertilizer combinations (1/4M+3/4NP, 0.5MNP, MNPK). The results showed that, compared with CK, the contents of total organic C (TOC), total P (TP), MBC and MBP in N and NK treatments decreased to some extent, while those in PK, NP and NPK treatments increased. Compared with the treatments of no fertilizer and inorganic fertilizer, the contents of TOC, MBC, MBP and MBP/TP ratio in treatments with manure significantly increased, among which M and MPNK treatments showed the strongest enhancement. The treatments with manure had the lowest MBC/MBP ratio, TOC/MBP ratio and MBC/TP ratio, while N treatment had the highest value. MBC, MBP, MBP/TP ratio, MBC/MBP ratio, TOC/MBP ratio and MBC/TP ratio were significantly correlated with TOC and available P, TOC was the direct factor affecting MBC, MBP, and MBP/TP ratio, while available P was the direct factor affecting MBC/MBP ratio, TOC/MBP ratio, MBC/TP ratio. In summary, soil MBP content and the coupling relationship between C and P could effectively distinguish the modes of production with single chemical fertilizer application and manure application, and could be used as biological indices in the evaluation of soil P fertility. Combined application of manure is an effective way to enhance P availability and increase its potential capacity and maintain soil biological health in yellow paddy soil.

Key words: soil microbial biomass P, yellow paddy soil, soil microbial biomass C, long-term fertilization, coupling of C and P

李渝, 刘彦伶, 白怡婧, 张雅蓉, 黄兴成, 张文安, 蒋太明. 黄壤稻田土壤微生物生物量碳磷对长期不同施肥的响应[J]. 应用生态学报, 2019, 30(4): 1327-1334.

LI Yu, LIU Yan-ling, BAI Yi-jing, ZHANG Ya-rong, HUANG Xing-cheng, ZHANG Wen-an, JIANG Tai-ming. Responses of soil microbial biomass C and P to different long-term fertilization treatments in the yellow paddy soil[J]. Chinese Journal of Applied Ecology, 2019, 30(4): 1327-1334.

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黄壤稻田土壤微生物生物量碳磷对长期不同施肥的响应

Responses of soil microbial biomass C and P to different long-term fertilization treatments in the yellow paddy soil

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