立式深旋松耕对西北半干旱区土壤水分性状及马铃薯产量的影响

doi:10.11686/cyxb2018313

摘要/Abstract

摘要： 合理耕作可增强土壤水分供给能力和促进作物根系发育,进而提高作物抗旱性和生产力,将是进一步挖掘半干旱区马铃薯产量和水分利用效率潜力的有效途径。在西北黄土高原半干旱区于2016-2017年设置定位试验,在全膜覆盖垄作模式下设计立式深旋松耕40 cm(VRT)、深松耕40 cm(DLT)和传统旋耕15 cm(TT)3个处理,测定土壤容重、总孔隙度、毛管孔隙度、饱和含水量、毛管含水量以及田间持水量和萎蔫系数、生育期土壤含水量、马铃薯产量等,计算土壤有效贮水量、耗水量和水分利用效率等指标,研究立式深旋松耕对土壤物理性状、马铃薯产量和水分利用的影响。结果表明,VRT显著降低了040 cm土层的土壤容重,较DLT和TT分别下降了10.8%25.3%和11.2%24.8%;土壤总孔隙度、毛管孔隙度分别提高了12.3%23.7%和29.7%46.6%,饱和含水量和土壤毛管含水量分别增加了26.1%54.4%和38.8%82.9%,萎蔫贮水量下降了11.0%49.0%。与TT相比,DLT降低了2040 cm土层的土壤容重和萎蔫贮水量,显著提高了饱和含水量、毛管含水量、总孔隙度和毛管孔隙度。基于土壤物理性状和水分特性的优化,VRT在040 cm土层的有效贮水量显著高于DLT和TT,分别增加了34.3%136.9%和44.6%75.2%,DLT较TT在2040 cm土层也有显著增加。较高的土壤有效贮水量促进马铃薯生长,并显著提高块茎产量,VRT分别较DLT和TT增产24.8%156.8%和47.8%41.0%,水分利用效率(WUE)分别提高18.9%92.3%和19.2%26.6%,干旱年份(2016)的增加幅度显著高于正常降水年份(2017)。因此,立式深旋松耕显著优化了土壤的水分特性,提高了土壤有效水含量,促进马铃薯发育,提高块茎产量和WUE,这一效果在干旱年份尤为明显,是适合于黄土高原半干旱区抗旱增产、水分高效的耕作方法。

关键词: 立式深旋松耕, 土壤物理性状, 土壤有效贮水量, 马铃薯, 块茎产量, 黄土高原半干旱区

Abstract: The right tillage methods can improve the capacity of soil to supply water to crops and promote root development. This can result in better drought resistance of crops and higher productivity. Therefore, this is a promising strategy to increase the yield and water-use efficiency of potato (Solanum tuberosum) crops in a semiarid area. This study was conducted at the Dingxi Experimental Station of the Gansu Academy of Agricultural Sciences. The station is located in the northwest of Loess Plateau (Anding District, Dingxi, Gansu Province, 104°36' E, 35°35' N) at an altitude of approximately 1970 m. The field experiment was conducted under ridge-furrow planting and plastic-mulching conditions in 2016 and 2017. Potato (Longshu 10) was used as the material, and the three treatments included: 1) vertical rotary sub-soiling to 40 cm depth (VRT); 2) sub-soiling to 40 cm depth (DLT); and (3) traditional tillage to 15 cm depth (TT). The experimental design was a randomized block with three replicates, and the area of each plot was 10 m×6 m. The soil bulk density, soil total porosity, capillary porosity, soil saturation moisture content, capillary moisture content, field water capacity, soil wilted moisture content, total soil water content, and tuber yield were investigated. In addition, soil available water storage, evapotranspiration (ET), and water-use efficiency (WUE) were calculated to determine the effect of the different tillage treatments on soil water characteristics, potato tuber yield, and WUE. The results showed that VRT significantly decreased the soil bulk density; by 10.8%-25.3% and by 13.8%-24.8% as compared with DLT and TT, respectively. Compared with DLT and TT, VRT increased total soil porosity and capillary porosity by 12.3%-23.7% and 29.7%-46.6%, respectively, increased the soil saturation moisture content and capillary moisture content by 26.1%-54.4% and 38.8%-82.9%, respectively, and decreased the soil wilted moisture content by 11.0%-49.0%. Compared with the TT treatment, the DLT treatment resulted in lower soil bulk density and soil wilted moisture content, and higher soil saturation moisture content, capillary moisture content, total soil porosity, and capillary porosity. The optimized soil physical and hydrographic characteristics resulted in significant increases in soil available moisture in VRT (34.3%-136.9% higher than in DLT and 44.6%-575.2% higher than in TT). The soil available moisture content in the 20-40 cm soil layer was much higher in DLT than in TT. The significant increase in soil available water content in VRT resulted in increased potato plant growth (by 24.8%-156.8%), increased potato tuber yield (by 47.8%-41.0%), and increased WUE (by 18.9%-92.3% and 19.2%-26.6%), as compared with those in the DLT and TT treatments. The observed differences among the treatments were significant, and were greater in the drought year (2016) than in the normal year (2017). Consequently, VRT optimized the soil physical and hydrographic characteristics, increased soil available moisture, increased potato development and tuber yield, and improved WUE, with stronger effects in the drier year (2016). Thus, VRT is a promising method to improve drought resistance and increase the water-use efficiency of crops on the semiarid Loess Plateau.

Key words: vertically rotary sub-soiling, soil physical characteristics, soil available moisture, potato, tuber yield, semiarid Loess Plateau

张绪成, 马一凡, 于显枫, 侯慧芝, 王红丽, 方彦杰. 立式深旋松耕对西北半干旱区土壤水分性状及马铃薯产量的影响[J]. 草业学报, 2018, 27(12): 156-165.

ZHANG Xu-cheng, MA Yi-fan, YU Xian-feng, HOU Hui-zhi, WANG Hong-li, FANG Yan-jie. Effects of vertical rotary sub-soiling on soil water characteristics and potato tuber yield in a semi-arid area of northwest China[J]. Acta Prataculturae Sinica, 2018, 27(12): 156-165.

参考文献

[1] Pu F X.The modern inheritance of traditional agricultural culture in China. Ancient and Modern Agriculture, 2000, 4: 51-58.
卜凤贤. 中国农耕文化传统的现代承启. 古今农业, 2000, 4: 51-58.
[2] Jia S L, Ren T S.Research progress and prospect on conservation tillage. Chinese Journal of Eco-Agriculture, 2003, 11(3): 152-154.
贾树龙, 任图生. 保护耕作研究进展及前景展望. 中国生态农业学报, 2003, 11(3): 152-154.
[3] Li A N, Fan X M, Wu C Y, et al. Situation and development trends of conservation tillage in the world. Transaction of the Chinese Society for Agricultural Machinery, 2006, 37(10): 177-180, 111.
李安宁, 范学民, 吴传云, 等. 保护性耕作现状及发展趋势. 农业机械学报, 2006, 37(10): 177-180, 111.
[4] Du J T, He W Q, Vinay N, et al. Effects of conservation tillage on soil water content in northern arid regions of China. Transactions of the Chinese Society of Agricultural Engineering, 2008, 24(11): 25-29.
杜建涛, 何文清, Vinay N, 等. 北方旱区保护性耕作对农田土壤水分的影响. 农业工程学报, 2008, 24(11): 25-29.
[5] Yu A Z, Huang G B.Effects of different tillage treatments on unerodible soil particles of wheat field in spring in inland irrigation region. Journal of Soil and Water Conservation, 2006, 20(3): 6-9.
于爱忠, 黄高宝. 保护性耕作对内陆河灌区春季麦田不可蚀性颗粒的影响. 水土保持学报, 2006, 20(3): 6-9.
[6] Zhang P, Jia Z K, Wang W, et al. Effects of straw returning on characteristics of soil aggregates in semi-arid areas in southern Ningnan of China. Scientia Agricultura Sinica, 2012, 45(8): 1513-1520.
张鹏, 贾志宽, 王维, 等. 秸秆还田对宁南半干旱地区土壤团聚体特征的影响. 中国农业科学, 2012, 45(8): 1513-1520.
[7] Chen Q, Sun T, Song C Y.Influence of no-tillage on soil physical properties and crop production. Pratacultural Science, 2014, 31(4): 650-658.
陈强, 孙涛, 宋春雨. 免耕对土壤物理性状及作物产量影响. 草业科学, 2014, 31(4): 650-658.
[8] Chen S H, Zhu Z L, Liu D H, et al. Influence of straw mulching with no-tillage on soil nutrients and carbon pool management index. Plant Nutrition and Fertilizer Science, 2008, 14(4): 806-809.
陈尚洪, 朱钟麟, 刘定辉, 等. 秸秆还田和免耕对土壤养分及碳库管理指数的影响研究. 植物营养与肥料学报, 2008, 14(4): 806-809.
[9] Han H F, Ning T Y, Tian S Z, et al. Effect of soil tillage and straw returning on weed biodiversity in summer maize field. Acta Ecologica Sinica, 2010, 30(5): 1140-1147.
韩慧芳, 宁堂原, 田慎重, 等. 土壤耕作及秸秆还田对夏玉米田间杂草生物多样性的影响. 生态学报, 2010, 30(5): 1140-1147.
[10] Shi Y Q, Chen Y Q, Sui P, et al. Cropland soil compaction: Its cause, influences and improvement. Chinese Journal of Ecology, 2010, 29(10): 2057-2064.
石彦琴, 陈源泉, 隋鹏, 等. 农田土壤紧实的发生、影响及其改良. 生态学杂志, 2010, 29(10): 2057-2064.
[11] Sun G F, Zhang H L, Xu S Q, et al. Effects of rotational tillage treatments on soil structure and water storage in double rice cropping region. Transactions of the Chinese Society of Agricultural Engineering, 2010, 26(9): 66-71.
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. 农业工程学报, 2010, 26(9): 66-71.
[12] Tian S Z, Wang Y, Ning T Y, et al. Effect of tillage method changes on soil organic carbon pool in farmland under long-term rotary tillage and no tillage. Transactions of the Chinese Society of Agricultural Engineering, 2016, 32(17): 98-105.
田慎重, 王瑜, 宁堂原, 等. 转变耕作方式对长期旋免耕农田土壤有机碳库的影响. 农业工程学报, 2016, 32(17): 98-105.
[13] Zhang M Y, Wei Y H, Kong F L, et al. Effects of tillage practices on soil carbon storage and greenhouse gas emission of farmland in North China. Transactions of the Chinese Society of Agricultural Engineering, 2012, 28(6): 203-209.
张明园, 魏燕华, 孔凡磊, 等. 耕作方式对华北农田土壤有机碳储量及温室气体排放的影响. 农业工程学报, 2012, 28(6): 203-209.
[14] Tian S Z, Wang Y, Ning T Y, et al. Continued no-till and subsoiling improved soil organic carbon and soil aggregation levels. Agronomy Journal, 2014, 106(1): 212-218.
[15] Liu D, Zhang X, Li J, et al. Effects of different tillage patterns on soil properties, maize yield and water use efficiency in Weibei Highland, China. Chinese Journal of Applied Ecology, 2018, 29(2): 573-582.
刘丹, 张霞, 李军, 等. 渭北旱塬农田不同耕作模式对土壤性状及玉米产量和水分利用效率的影响. 应用生态学报, 2018, 29(2): 573-582.
[16] Florian S, Axel D, Inga H, et al. The effect of deep tillage on crop yield-what do we really know. Soil and Tillage Research, 2017, 174: 193-204.
[17] Lü W, Li J, Yue Z F.et al. Effects of rotational tillage on soil organic matter and soil total nitrogen contents of continuous cropping wheat field in Weibei highland. Scientia Agricultura Sinica, 2015, 48(16): 3186-3200.
吕薇, 李军, 岳志芳, 等. 轮耕对渭北旱塬麦田土壤有机质和全氮含量的影响. 中国农业科学, 2015, 48(16): 3186-3200.
[18] Wei B H, Gan X Q, Shen Z Y, et al. Yield increase of smash-ridging cultivation of sugarcane. Scientia Agricultura Sinica, 2011, 44(21): 4544-4550.
韦本辉, 甘秀芹, 申章佑, 等. 粉垄栽培甘蔗试验增产效果. 中国农业科学, 2011, 44(21): 4544-4550.
[19] Wei B H, Gan X Q, Shen Z Y, et al. Production increasing and discussion in theory of smash-ridging cultivate cassava. Chinese Agricultural Science Bulletin, 2011, 27(21): 78-81.
韦本辉, 甘秀芹, 申章佑, 等. 粉垄栽培木薯增产效果及理论探讨. 中国农学通报, 2011, 27(21): 78-81.
[20] Li H, Pang H C, Ren T Z, et al. Effects of deep rotary-subsoiling tillage method on brown physical properties and maize growth in northeast of China. Scientia Agricultura Sinica, 2013, 46(3): 647-656.
李华, 逄焕成, 任天志, 等. 深旋松耕作法对东北棕壤物理性状及春玉米生长的影响. 中国农业科学, 2013, 46(3): 647-656.
[21] Zhai L C, Xu P, Zhang Z B, et al. Effects of deep vertical rotary tillage on dry matter accumulation and grain yield of summer maize in the Huang-Huai-Hai Plain of China. Soil Tillage Research, 2017, 170: 167-174.
[22] Li Y B, Pang H C, Yang X, et al. Effects of deep vertically rotary tillage on soil water and water use efficiency in northern China’s Huanghuaihai Region. Acta Ecologica Sinica, 2013, 33(23): 7478-7486.
李轶冰, 逄焕成, 杨雪, 等. 粉垄耕作对黄淮海北部土壤水分及其利用效率的影响. 生态学报, 2013, 33(23): 7478-7486.
[23] Hou H Z, Wang J, Zhang X C, et al. Effects of mini-ditch planting with plastic mulching in ridges on soil water content, temperature and potato yield in rain-fed semiarid region. Acta Agronomica Sinica, 2015, 41(10): 1582-1590.
侯慧芝, 王娟, 张绪成, 等. 半干旱区全膜覆盖垄上微沟种植对土壤水热及马铃薯产量的影响. 作物学报, 2015, 41(10): 1582-1590.
[24] Zhang X C, Yu X F, Wang H L, et al. Regulations of reduced chemical nitrogen, potassium fertilizer application and organic manure substitution on potato water-fertilizer utilization and biomass assimilation under whole field plastics mulching and ridge-furrow planting system on semi-arid area. Scientia Agricultura Sinica, 2016, 49(5): 852-864.
张绪成, 于显枫, 王红丽, 等.半干旱区减氮增钾、有机肥替代对全膜覆盖垄沟种植马铃薯水肥利用和生物量积累的调控. 中国农业科学, 2016, 49(5): 852-864.
[25] Institute of Soil Science, Chinese Academy of Sciences. Soil physical chemical analysis. Shanghai: Shanghai Science and Technological Press, 1978.
中国科学院南京土壤研究所. 土壤理化分析. 上海: 上海科学技术出版社, 1978.
[26] Garg N K, Gupta M.Assessment of improved soil hydraulic parameters for soil water content simulation and irrigation scheduling. Irrigation Sciences, 2015, 33: 247-264.