GAN Lei,LI Jian,LI Shuai,et al.Soil Pore Characteristics of Sugarcane Field Under Different Tillage Treatments in Guangxi[J].Research of Soil and Water Conservation,2020,27(06):122-130.
广西甘蔗地不同耕作方式下土壤孔隙特征
- Title:
- Soil Pore Characteristics of Sugarcane Field Under Different Tillage Treatments in Guangxi
- 文章编号:
- 1005-3409(2020)06-0122-09
- Keywords:
- pore characteristics; sugarcane field; CT(computerized tomography)scan; 3D reconstruction; tillage measures
- 分类号:
- S152.5
- 文献标志码:
- A
- 摘要:
- 为探究广西地区不同耕作方式对甘蔗地土壤孔隙结构的影响,选取经过3年耕作(CT)与免耕(NT)处理的两种不同耕作方式下的甘蔗地土壤作为研究对象,利用X射线CT扫描技术和ImageJ等软件获得表征土壤孔隙二维分布和三维特征的参数,并对土壤孔隙结构进行三维重构与可视化。结果表明:两种处理下土壤质地组成差异不大,但耕作使得土壤容重降低,改变了有机质的分布,使有机质含量显著增加。耕作主要影响土壤中的大孔隙(>50 μm)和中孔隙(0.2～50 μm)的分布,使得0—30 cm土层大孔隙减少,中孔隙增加。耕作处理土壤孔隙的面密度和复杂度的波动大于免耕处理。耕作处理的土壤孔隙连通度均值(0.687)显著高于免耕处理(0.465),孔隙弯曲度均值(1.314)显著低于免耕处理(1.348),孔隙度和孔隙数均值(0.526%,8 174)显著小于免耕处理(1.181%,16 306)。免耕土壤孔隙在三维空间中分布较多且均匀,但孔隙孤立,连通较少,并且孔隙路径较弯曲。耕作土壤孔隙在三维空间中分布虽少,但分布呈网络型,交叉连通孔隙较多,孔隙通道连续且规则。因此,在广西地区甘蔗种植中,相较免耕而言,耕作增加土壤中生物性大孔隙,增加孔隙的连通度,降低孔隙通道的弯曲度,有利于土壤水分与溶质运移通道形成,并且促进作物根系生长和微生物活动,改善土壤的导水透气性,对甘蔗的生长发育具有积极作用。
- Abstract:
- This study aimed to explore influence of different tillage treatments on soil pore structure in sugarcane fields in Guangxi region and provide reference for appropriate tillage to local sugarcane planting. In this study, sugarcane fields under tillage(CT)and non-tillage(NT)for 3 years in Guangxi were studied. Computed tomography with ImageJ software was applied to obtain the soil pore distribution features of the two-dimensional and three-dimensional space characteristics. The three-dimensional reconstruction and visualization of soil pore structure have been conducted. The results showed that there was a small difference in soil texture between the two treatments, but the content of soil organic matter in tillage plot increased and the bulk density decreased significantly; tillage mainly affected the number of macropores and medium pores in the soil, in which the number of macropores decreased and the number of medium pores increased; for the two-dimensional distribution, the density and complexity of pore cross-sectional area in tillage plot fluctuated more than that in non-tillage plot; as for the three-dimensional characteristics, the values of pore density(0.526%), pore number(8 174)and tortuosity(1.314)in tillage plot were less than those of values in non-tillage plot for 1.181%, 16 306, 1.348, respectively; however, the average connectivity values of pore in tillage plot(0.687)were greater than these values(0.465)in non-tillage plot; for the three-dimensional visualization figure, the distribution range of pores in non-tillage plot was larger, but relatively isolated, while the more network connectivity is demonstrated in the pores in tillage plot. On the other hand, since this study also has proved the method of CT scanning combined with three-dimensional reconstruction, hence the information of soil internal characteristics intuitively and comprehensively can be obtained. Compared with non-tillage in this study, tillage could reduce tortuosity but increase connectivity of the soil. Moreover, tillage could promote the formation of biological macropores that was located at the surface of the soil, which could facilitate infiltration of soil moisture. Thus, tillage is beneficial to crop root growth and microbial activity, and therefore improves the soil water and solute transport corridor, which lets tillage play a positive role in sugarcane growth.
参考文献/References:
[1] 杨永辉,武继承,毛永萍,等.免耕对土壤剖面孔隙分布特征的影响[J].中国生态农业学报,2018,26(7):1019-1028.
[2] 程亚南,刘建立,张佳宝.土壤孔隙结构定量化研究进展[J].土壤通报,2012,43(4):988-994.
[3] 杨艳.不同耕作措施对农田土壤理化性质和作物产量的影响[D].陕西杨凌:西北农林科技大学,2017.
[4] 宋鸽,史东梅,朱红业,等.不同耕作措施对红壤坡耕地耕层质量的影响[J].土壤学报,2020,57(3):610-622.
[5] 孟令斌,高玮,郑永照,等.不同耕作措施对土壤特性影响研究进展[J].农业科技通讯,2019(2):164-166.
[6] 罗俊,林兆里,阙友雄,等.耕作深度对蔗地土壤物理性状及甘蔗产量的影响[J].应用生态学报,2019,30(2):405-412.
[7] 汤文光,肖小平,唐海明,等.长期不同耕作与秸秆还田对土壤养分库容及重金属Cd的影响[J].应用生态学报,2015,26(1):168-176.
[8] 许淑青.不同农作方式对耕层土壤理化性质的影响[D].兰州:甘肃农业大学,2008:22-24.
[9] Munkholm L J, Heck R J, Deen B. Soil pore characteristics assessed from X-ray micro-CT derived images and correlations to soil friability[J]. Geoderma, 2012,181/182:22-29.
[10] Muhammad N, Per M, Schaap M G, et al. Prediction of biopore-and matrix-dominated flow from X-ray CT-derived macropore network characteristics[J]. Hydrology & Earth System Sciences Discussions, 2016,20(10):4017-4030.
[11] 赵玥,韩巧玲,赵燕东.基于CT扫描技术的土壤孔隙定量表达优化[J].农业机械学报,2017,48(10):252-259.
[12] Petrovic A M, Siebert J E, Rieke P E. Soil bulk density analysis in three dimensions by computed tomographic scanning[J]. Soil Science Society of America Journal, 1982,46(3):445-450.
[13] San José Martínez F, Caniego F J, García-Gutiérrez C. Lacunarity of soil macropore space arrangement of CT images: Effect of soil management and depth[J]. Geoderma, 2017,287:80-89.
[14] 吴景社.用CT扫描器测定土壤结构[J].灌溉排水学报,1988(4):51-52.
[15] 姚志华,陈正汉,李加贵,等.基于CT技术的原状黄土细观结构动态演化特征[J].农业工程学报,2017,33(13):134-142.
[16] 唐柄哲,何丙辉,闫建梅.川中丘陵区土地利用类型对土壤理化性质影响的灰色关联分析[J].应用生态学报,2016,27(5):1445-1452.
[17] 赵锦梅,张德罡,刘长仲,等.祁连山东段高寒地区土地利用类型对土壤性状的影响[J].生态学报,2012,32(2):548-556.
[18] 巩杰,陈利顶,傅伯杰,等.黄土丘陵区小流域植被恢复的土壤养分效应研究[J].水土保持学报,2005,19(1):93-96.
[19] 田涟祎.石漠化地区土壤性质对不同土地利用类型的响应研究[D].贵阳:贵州师范大学,2016.
[20] Li Z Y, Jin Z J, Li Q. Changes in land use and their effects on soil properties in Huixian karst wetland system[J]. Polish Journal of Environmental Studies, 2017,26(2):699-707.
[21] 刘建新,邓凌毅,唐晶晶.激光粒度仪在江西河流泥沙颗粒分析中的应用[J].江西水利科技,2015,41(4):259-263.
[22] 谢细香.重铬酸钾稀释热比色法测定土壤有机质的研究[J].安徽农业科学,2005,33(6):998-999.
[23] 甘磊,张静举,黄太庆,等.基于CT技术的甘蔗地不同耕作措施下土壤孔隙结构研究[J].西南农业学报,2017,30(8):1843-1848.
[24] 李德成,Velde B,张桃林.利用土壤切片的数字图像定量评价土壤孔隙变异度和复杂度[J].土壤学报,2003,40(5):678-682.
[25] 刘伟,范爱武,黄晓明.多孔介质传热传质理论与应用[M].北京:科学出版社,2006.
[26] 孙经伟.农业恢复措施对黑土母质发育的新成土土壤结构性质的影响[D].北京:中国农业科学院,2015.
[27] 刘春,王宝军,施斌,等.基于数字图像识别的岩土体裂隙形态参数分析方法[J].岩土工程学报,2008,30(9):1383-1388.
[28] 王震宇,于晓冬,许颖,等.土壤微孔对有机物吸附/解吸的影响及其表征[J].生态学报,2009,29(4):2087-2096.
[29] 雷志栋,杨诗秀,谢森传.土壤水动力学[M].北京:清华大学出版社,1988.
[30] 郭李娜,樊贵盛.旱作农田土壤表层容重年内变化特性的试验研究[J].节水灌溉,2018,269(1):23-27.
[31] 张爱良,王建平.作物根系与水分的关系[J].作物研究,1997,11(2):4-6.
[32] 刘占锋,傅伯杰,刘国华,等.土壤质量与土壤质量指标及其评价[J].生态学报,2006,26(3):901-913.
[33] 刘效东, 乔玉娜, 周国逸. 土壤有机质对土壤水分保持及其有效性的控制作用[J]. 植物生态学报, 2011(12):5-14.
[34] 李成亮,孔宏敏,何园球.施肥结构对旱地红壤有机质和物理性质的影响[J].水土保持学报,2004,18(6):116-119.
[35] 董林林,张海东,于东升,等.引黄灌淤耕作对剖面土壤有机质组分构成的影响[J].土壤学报,2017,54(3):613-623.
[36] Angers D, N'dayegamiye A, Côté D. Tillage-induced differences in organic matter of particle-size fractions and microbial biomass[J]. Soil Science Society of America Journal(USA), 1993,57(2):512-516.
[37] 孙梅,黄运湘,孙楠,等.农田土壤孔隙及其影响因素研究进展[J].土壤通报,2015,46(1):233-238.
[38] 杜满聪,李江涛,李淑玲,等.不同耕作方式对华南坡耕地土壤孔隙结构和抗穿透强度影响[J].广州大学学报:自然科学版,2018,17(6):74-80.
[39] 王殿武,褚达华.少、免耕对旱地土壤物理性状的影响[J].河北农业大学学报,1992,15(2):28-33.
[40] 虞娜,金鑫鑫,安晶,等.玉米田耕层不同类型土壤孔隙及库容特征的研究[J].沈阳农业大学学报,2014,45(6):685-690.
[41] 孙国峰,张海林,徐尚起,等.轮耕对双季稻田土壤结构及水贮量的影响[J].农业工程学报,2010,26(9):66-71.
[42] 李文杰,张展羽,王策,等.干湿循环过程中壤质黏土干缩裂缝的开闭规律[J].农业工程学报,2015,31(8):126-132.
[43] 高朝侠,徐学选,赵娇娜,等.土壤大孔隙流研究现状与发展趋势[J].生态学报,2014,34(11):2801-2811.
[44] 冯杰,郝振纯.CT扫描确定土壤大孔隙分布[J].水科学进展,2002,13(5):611-617.
[45] Mosaddeghi M R, Mahboubi A A, Safadoust A. Short-term effects of tillage and manure on some soil physical properties and maize root growth in a sandy loam soil in western Iran[J]. Soil & Tillage Research, 2009,104(1):173-179.
[46] 赵丽萍,刘家勇,赵培方,等.水分胁迫对甘蔗根系及地上部生长的影响[J].湖南农业大学学报:自然科学版,2019,45(1):10-15.
[47] 王卫华,张志鹏.基于土壤导气率的燥红土孔隙结构及弯曲连通性研究[J].土壤学报,2018,55(2):360-368.
[48] Gómez J A, Giráldez J V, Pastor M, et al. Effects of tillage method on soil physical properties, infiltration and yield in an olive orchard[J]. Soil & Tillage Research,1999,52(3):167-175.
[49] 相方园.土壤孔隙三维构建与特征表达[D].武汉:华中农业大学,2008.
[50] 黄高宝,郭清毅,张仁陟,等.保护性耕作条件下旱地农田麦豆双序列轮作体系的水分动态及产量效应[J].生态学报,2006(4):210-219.
[51] Hu X, Li X Y, Wang P, et al. Influence of exclosure on CT-measured soil macropores and root architecture in a shrub-encroached grassland in northern China[J]. Soil and Tillage Research, 2019,187:21-30.
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备注/Memo
收稿日期:2019-12-26 修回日期:2020-02-09
资助项目:国家自然科学基金(41501230; 41761048); 广西自然科学基金(2016GXNSFAA380197)
第一作者:甘磊(1983—),男,湖南岳阳人,副教授,博士,主要从事土壤结构与土壤水热耦合模拟研究。E-mail:allen_gl2006@163.com