长期不同施肥和耕作对坡耕地黄壤团聚体组成及有机碳的影响

doi:10.16843/j.sswc.2021.02.007

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摘要为探究不同施肥和耕作对坡耕地黄壤团聚体组成及有机碳的影响，本文以贵州省农业面源污染长期定位监测为试验平台，对比研究不施肥+顺坡平作（T1）、常规施肥+顺坡平作（T2）、优化施肥+顺坡平作（T3）、优化施肥+横坡垄作（T4）、优化施肥+横坡垄作+秸秆覆盖（T5）和优化施肥+横坡垄作+秸秆覆盖+等高植物篱（T6）对黄壤团聚体组成及有机碳含量的影响。结果表明：各处理机械稳定性团聚体和水稳性团聚体组成均以>0.25 mm大团聚体为主；同等耕作条件下，T3较T2水稳性团聚体的平均质量直径、几何平均直径、>0.25 mm的团聚体分别提高14.22%、25.74%、5.24%；T6的土壤团聚体破坏率、不稳定团粒指数和分形维数与其他处理相比均为最低；不同粒级水稳性团聚体中均以T1有机碳含量最低，同等耕作条件下，>5、5~2、0.5~0.25、<0.25 mm团聚体中T3较T2的有机碳含量提升1.88%~26.32%，同等施肥条件下，>5、5~2、2~1、1~0.5 mm团聚体中T5和T6较T4的有机碳含量分别提升3.21%~17.20%和0.26%~10.19%；土壤团聚体有机碳主要集中在>0.25 mm的大团聚体中，T2、T3、T4、T5、T6中>5 mm团聚体的有机碳贡献率均最高，分别为27.04%、31.51%、30.89%、33.61%、31.63%。长期优化施肥结合保护性耕作可改善土壤团聚体，提高团聚体稳定性和土壤有机碳含量，可作为喀斯特地区坡耕地较佳的施肥与耕作组合。

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	白怡婧
	刘彦伶
	李渝
	黄兴成
	张雅蓉
	蒋太明
	秦松

关键词 ：坡耕地, 优化施肥, 保护性耕作, 土壤团聚体, 稳定性, 土壤有机碳

Abstract：[Background] The findings demonstrated the suitable tillage measures and rational application of fertilizer could effectively prevent and control regional soil erosion. Soil properties that affect soil erosion are mainly anti-erodibility and impact resistance, and soil aggregates are their characteristic form. Stabilization of soil aggregation is considered to be the most important mechanism for soil carbon sequestration. The effects of conservation tillage and optimized fertilization on the soil aggregates composition and soil organic carbon were compared in this paper, and it can be used as a better combination of farm and fertilization for slope land in karst area. [Methods] The long-term positioning monitoring of agricultural non-point source pollution in Guizhou province was taken as the experimental platform. The dry sieve method (mechanically stable aggregates) and the wet sieve method (water stable aggregate) were used to compare and study the effects of 6 treatments on the aggregate composition and organic carbon content of yellow soil,6 treatments referred to no fertilization + downslope conventional tillage (T1), conventional fertilization + downslope conventional tillage (T2) as the control, optimized fertilization + downslope conventional tillage (T3), optimized fertilization +cross ridge tillage (T4), optimized fertilization +cross ridge tillage + straw mulching (T5), and optimized fertilization + cross ridge tillage + straw mulching + contour hedgerow (T6). [Results] 1) The compositions of mechanically stable and water stable aggregates by each treatment were mainly composed of large aggregates of ＞0.25 mm. Under the same tillage conditions, the mean weight diameter (MWD), geometric mean diameter (GMD) and aggregates size of ＞0.25 mm(R_0.25) of T3 increased by 14.22%,25.74% and 5.24% compared to T2, respectively. 2) Compared with other treatments, the soil of percentage of aggregate destruction (PAD), unstable aggregate index (E_LT) and fractal dimension (D) of T6 were the lowest,the organic carbon content of T1 was the lowest in water stable aggregates of different particle sizes. The organic carbon content of T3 increased by 1.88%-26.32% compared to T2 in the aggregate sizes of >5.00, 5.00-2.00, 0.50-0.25, and <0.25 mm under the same tillage conditions. The organic carbon content of T5 and T6 increased by 3.21%-17.20% and 0.26%-10.19% compared to T4 in the aggregate sizes of >5.0, 5.0-2.0, 2.0-1.0, and 1.0-0.5 mm, respectively under the same fertilization conditions. The contents of soil aggregate organic carbon was mainly in the size of ＞0.25 mm, and the >5.00 mm aggregates were the highest contribution rate of organic carbon in T2, T3, T4, T5 and T6,which were 27.04%,31.51%,30.89%, 33.61% and 31.63%, respectively. Furthermore, soil aggregate organic carbon showed a positive correlation with soil total organic carbon.[Conclusions] Long-term optimized fertilization and conservation tillage may effectively improve the aggregates and its stability and soil organic carbon content, and can be used as a better combination of tillage and fertilization for slope land in karst areas of China.

Key words： slope land optimized fertilization conservation tillage soil aggregates stability soil organic carbon

收稿日期: 2020-01-07

PACS:

S157.2

基金资助:国家自然科学基金"保护性耕作对喀斯特地区黄壤旱地土壤有机碳库稳定性的影响机制"（32060302）；贵州省科技平台及人才团队计划"贵州省耕地保育科技创新人才团队"（黔科合平台人才[2018]5604号）；中央引导地方科技发展专项"贵州山区耕地质量监测与预警技术平台建设"（黔科中引地[2019]4003号）；贵州省科技支撑计划项目"贵州石漠化地区保护性耕作关键技术研究与示范"（黔科合支撑[2017]2852），"农田氮磷流失阻控技术研究与示范"（黔科合支撑[2018]2340号）

通讯作者: 刘彦伶(1989-),女,硕士,助理研究员。主要研究方向:耕地质量演变。E-mail:lyl890615@163.com E-mail: lyl890615@163.com

作者简介: 白怡婧(1994-),女,硕士。主要研究方向:耕地保育。E-mail:baiyijing7@163.com

引用本文:

白怡婧, 刘彦伶, 李渝, 黄兴成, 张雅蓉, 蒋太明, 秦松. 长期不同施肥和耕作对坡耕地黄壤团聚体组成及有机碳的影响[J]. 中国水土保持科学, 2021, 19(2): 52-60.
BAI Yijing, LIU Yanling, LI Yu, HUANG Xingcheng, ZHANG Yarong, JIANG Taiming, QIN Song. Effect of long-term different tillage and fertilization measures on aggregates composition and organic carbon in yellow soil slope cultivated land. SSWC, 2021, 19(2): 52-60.

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http://journal12.magtechjournal.com/Jweb_stbc/CN/10.16843/j.sswc.2021.02.007 或 http://journal12.magtechjournal.com/Jweb_stbc/CN/Y2021/V19/I2/52

[1]	潘根兴,程琨,陆海飞,等. 可持续土壤管理:土壤学服务社会发展的挑战[J].中国农业科学, 2015,48(23):4607. PAN Genxing, CHEN Kun, LU Haifei, et al. Sustainable soil management:An emerging soil science challenge for global development[J].Scientia Agricultura Sinica,2015,48(23):4607.
[2]	王丽,李军,李娟,等.轮耕与施肥对渭北旱作玉米田土壤团聚体和有机碳含量的影响[J].应用生态学报, 2014, 25(3):759. WANG Li, LI Jun, LI Juan, et al.Effects of tillage rotation and fertilization on soil aggregates and organic carbon content in corn field in Weibei Highland[J]. Chinese Journal of Applied Ecology,2014,25(3):759.
[3]	BEARDEN B N, PETERRSEN L. Influence of arbuscular mycorrhizal fungi on soil structure and aggregate stability of a vertisol[J]. Plant and Soil, 2000, 218(1/2):173.
[4]	JASTROW J D.Soil aggregate formation and the accrual of particulate and mineral-associated organic matter[J]. Soil Biology and Biochemistry, 1996, 28(4):665.
[5]	刘晓永.中国农业生产中的养分平衡与需求研究[D].北京:中国农业科学院, 2018:22. LIU Xiaoyong. Study on nutrients balance and requirement in agricultural production in China[D]. Beijing:Chinese Academy of Agricultural Sciences, 2018:22.
[6]	王倩,李军,宁芳,等. 渭北旱作麦田长期保护性耕作土壤肥力特征综合评价[J].应用生态学报, 2018,29(9):2925. WANG Qian, LI Jun, NING Fang,et al.Comprehensive assessment of soil fertility characteristics under different long-term conservation tillages of wheat field in Weibei Highland, China[J]. Chinese Journal of Applied Ecology, 2018,29(9):2925.
[7]	林昌虎,解德蕴,涂成龙,等.贵州山区坡耕地综合利用与整治[J].水土保持研究, 2004,11(3):211. LIN Changhu, XIE Deyun, TU Chenglong,et al.Comprehensive exploitation and renovation on the slope farmland in Guizhou mountain region[J]. Research of Soil and Water Conservation,2004,11(3):211.
[8]	戴全厚,严友进.西南喀斯特石漠化与水土流失研究进展[J].水土保持学报, 2018,32(2):1. DAI Quanhou,YAN Youjin.Research progress of karst rocky desertification and soil erosion in southwest China[J].Journal of Soil and Water Conservation, 2018,32(2):1.
[9]	邱野,王瑄.耕作模式对坡耕地土壤水分和大豆产量的影响[J].农业工程学报, 2018,34(22):128. QIU Ye, WANG Xuan. Effects of tillage patterns on soil moisture and soybean yield in sloping fields[J].Transactions of the CSAE,2018,34(22):128.
[10]	陈静蕊,刘佳,王惠明,等.保护性耕作措施对陡坡地养分流失的影响[J].中国土壤与肥料, 2018,273(1):146. CHEN Jingrui, LIU Jia, WANG Huiming, et al.Effect of conservation tillage on soil nutrient loss from a steep hillslope soil[J]. Soil and Fertilizer Sciences in China, 2018,273(1):146.
[11]	黄兴成,李渝,白怡婧,等.长期不同施肥下黄壤综合肥力演变及作物产量响应[J].植物营养与肥料学报, 2018,24(6):1484. HUANG Xingcheng, LI Yu, BAI Yijing,et al.Evolution of yellow soil fertility under long-term fertilization and response of corpyield[J].Journal of Plant Nutrition and Fertilizes, 2018,24(6):1484.
[12]	刘彦伶,李渝,张雅蓉,等.长期氮磷钾肥配施对贵州黄壤玉米产量和土壤养分可持续性的影响[J].应用生态学报, 2017,28(11):3581. LIU Yanling, LI Yu, ZHANG Yarong,et al.Effect of long-term application of NPK fertilizer on maize yield and yellow soil nutrients sustainability in Guizhou, China[J].Chinese Journal of Applied Ecology, 2017,28(11):3581.
[13]	中国科学院南京土壤研究所.土壤理化分析[M].上海:上海科学技术出版社,1978:68. Institute of Soil Science, Chinese Academy of Sciences. Soil physicochemical analysis[M]. Shanghai:Shanghai Scientific and Technical Publishers, 1978:68.
[14]	HILLEL D. Fundamentals of soil physics[M]. New York:Academic Press, Tnc. 1980:93.
[15]	王秀颖,高晓飞,刘和平,等.土壤水稳性大团聚体测定方法综述[J].中国水土保持科学,2011,9(3):106. WANG Xiuyin, GAO Xiaofei, LIU Heping, et al. Review of analytical methods for aggregate size distribution and water-stability of soil macro-aggregates[J]. Science of Soil and Water Conservation, 2011,9(3):106.
[16]	王碧胜.长期保护性耕作土壤团聚体有机碳转化过程及机制[D].北京:中国农业科学院,2019:15. WANG Bisheng.Process and mechanism of organic carbon conversion in soil aggregates in long-term conservation tillage[D]. Beijing:Chinese Academy of Agricultural Sciences,2019:15.
[17]	王美佳,王沣,苏思慧,等.秸秆还田对土壤水稳性团聚体及其碳分布的影响[J].干旱区研究, 2019,36(2):331. WANG Meijia, WANG Feng, SU Sihui,et al. Effects of straw turnover on soil water-stable aggregates and soil carbon distribution[J]. Arid Zone Research,2019,36(2):331.
[18]	杨培岭,罗远培,石元春. 用粒径的重量分布表征的土壤分形特征[J].科学通报,1993,38(20):1896. YANG Peiling, LUO Yuanpei, SHI Yuanchun.Soil fractal characteristics characterized by volumetric weight distribution[J]. Chinese Science Bulletin,1993,38(20):1896.
[19]	TISDALL J M, OADES J M. Organic matter and water-stable aggregates in soil[J]. Journal of Soil Science, 1982,33(2):152.
[20]	HEMMAT A, AGHILINATEGH N, REZAINEJAD Y, et al.Long-term impacts of municipal solid waste compost, sewage sludge and farmyard manure application on organic carbon, bulk density and consistency limits of a calcareous soil in central Iran[J]. Soil and Tillage Research, 2010, 108(1):43
[21]	GERZABEK M H, HABERHAUER G, KIRCHMANN H. Soil organic matter pools and carbon-13 natural abundances in particle-size fractions of a long-term agricultural field experiment receiving organic amendments[J]. Soil Science Society of America Journal, 2001, 65(2):352
[22]	蒲玉琳,林超文,谢德体,等. 植物篱-农作坡地土壤团聚体组成和稳定性特征[J].应用生态学报, 2013,24(1):122. PU Yulin, LIN Chaowen, XIE Deti, et al. Composition and stability of soil aggregates in hedgerow-crop slope land[J].Chinese Journal of Applied Ecology, 2013,24(1):122.
[23]	赵红,袁培民,吕贻忠,等. 施用有机肥对土壤团聚体稳定性的影响[J].土壤, 2011,43(2):306. ZHAO Hong, YUAN Peimin, LÜ Yizhong, et al.Effects of organic manure application on stability of soil aggregates[J]. Soils, 2011,43(2):306.
[24]	徐阳春,沈其荣. 有机肥和化肥长期配合施用对土壤及不同粒级供氮特性的影响[J].土壤学报,2004,41(1):87. XU Yangchun, SHEN Qirong.Influence of long-term combined application of manure and chemical fertilizer on supplying characteristics of nitrogen in soil and soil particle fractions[J].Acta Pedologica Sinica,2004,41(1):87.
[25]	黄新君.紫色土坡耕地耕层结构稳定性及对抗蚀性影响[D].北京:中国农业科学院,2017:23. HUANG Xinjun. Stability of soil structure and its effect on soil anti-erodibility in topsoil of sloping farmland of purple soil region[D]. Beijing:Chinese Academy of Agricultural Sciences,2017:23.
[26]	梁世鹏.耕作与外源碳对草甸黑土水稳性团聚体的影响[D].哈尔滨:东北农业大学,2019:18. LIANG Shipeng. Effects of tillage and exogenous carbon on water stable aggregates of meadow blacksoil[J]. Harbin:Northeast Agricultural University,2019:18.
[27]	SIX J, BOSSUYT H, DEGRYZE S, et al.A history of research on the link between (micro) aggregates, soil biota, and soil organic matter dynamics[J]. Soil & Tillage Research, 2004, 79(1):7.
[28]	谢锦升,杨玉盛,陈光水,等.植被恢复对退化红壤团聚体稳定性及碳分布的影响[J].生态学报, 2008,28(2):702. XIE Jinsheng, YANG Yusheng, CHEN Guangshui,et al. Effects of vegetation restoration on water stability and organic carbon distribution in aggregates of degraded red soil in subtropics of China[J]. Acta Ecologica Sinica, 2008,28(2):702.