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| Experimental investigation into effects of maize leaf and straw fragments on soil water infiltration characteristics in furrow irrigation |
| ZHENG Jian1,3, WANG Yan1,3, CAI Huanjie2, ZHANG Enji1,3, SUN Yuxin1,3 |
| 1.China Western Energy & Environment Research Center, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2.Key Laboratory of Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Northwest A&F University, Yangling, Shaanxi 712100, China; 3. China Northwestern Collaborative Innovation Center of Low-carbon Urbanization Technologies, Lanzhou, Gansu 730050, China |
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Abstract To clarify effects of straw fragments on soil water infiltration characteristics and water content distribution in the soil in furrow irrigation, a series of experiments are carried out in laboratory by using maize leaf and straw fragments with different sizes, proportions and depths buried. In addition, the wetting front movement of soil water in different treatments is simulated with the software of HYDRUS-2D. The results show that soil water infiltration rate is decreased in the cases with maize leaf fragments, but increased in the cases with maize straw fragments significantly. For the cases with maize straw fragments, the soil vertical infiltration distance is increased if the fragments are buried in a depth of 10-15 cm, and the vertical distance of 18% soil water content contours is greater than that if the fragments are buried in 5-10 cm depth. In the cases with maize leaf fragments, the horizontal distance of 18% soil water content contours is increased when the fragments are buried in 10-15 cm depth compared with 5-10 cm depth. In the case that the soil is blended with 3% maize leaves in 10-15 cm depth, the maximum soil water content can be as high as 21%, and the vertical infiltration distance is the shortest. This implies that in this treatment the water movement in the vertical direction has been obstructed effectively and the water content in the soil above the buried layer is increased simultaneously. Meanwhile, the error of wetting front movement between experiment and simulation of HYDRUS-2D is less than 3%, suggesting the software demonstrate the behavior of wetting front movement accurately.
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Received: 07 May 2015
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| [1]龚振平, 杨悦乾. 作物秸秆还田技术与机具[M]. 北京:中国农业出版社, 2012:1-2.[2]ZHAO Shicheng, HE Ping, QIU Shaojun, et al. Long-term effects of potassium fertilization and straw return on soil potassium levels and crop yields in north-central China[J]. Field crops research, 2014,169:116-122.[3]WANG X H, YANG H S, LIU J, et al. Effects of ditch-buried straw return on soil organic carbon and rice yields in a rice—wheat rotation system[J]. Catena, 2015,127:56-63.[4]KUMAR A, KUMAR P, YADAV S K, et al. Effect of integrated nutrient management on yield and economics of pearlmillet-wheat cropping system[J]. Environment and ecology, 2012,30(1):57-59.[5]王珍, 冯浩. 秸秆不同还田方式对土壤入渗特性及持水能力的影响[J].农业工程学报,2010,26(4):75-80. WANG Zhen, FENG Hao. Effect of straw-incorporation on soil infiltration characteristics and soil water holding capacity[J]. Transactions of the CSAE, 2010,26(4):75-80.(in Chinese)[6]王增丽, 王珍, 冯浩. 秸秆粉碎氨化还田对土壤体积质量及持水特性的影响[J]. 农业工程学报,2011,27(11):211-215. WANG Zengli, WANG Zhen, FENG Hao. Effects of pulverized and ammoniated straw on soil bulk density and water-holding characteristics[J]. Transactions of the CSAE, 2011,27(11):211-215.(in Chinese)[7]王增丽, 王珍, 冯浩. 预处理秸秆对土壤蒸发及秸秆分解率的影响[J]. 排灌机械工程学报, 2013,31(9):816-821. WANG Zengli, WANG Zhen, FENG Hao. Effects of pretreated straws on soil evaporation and straw decomposition rate[J]. Journal of drainage and irrigation machinery engineering, 2013,31(9):816-821.(in Chinese)[8]王燕, 郑健, 冀宏, 等. 植物混掺物对甘肃景泰砂壤土入渗过程的影响[J]. 农业机械学报, 2010,41(1):63-67. WANG Yan, ZHENG Jian, JI Hong, et al. Impacts of plant additive on the infiltration with sandy loam[J]. Transactions of the Chinese society for agricultural machinery, 2010,41(1):63-67.(in Chinese)[9]QIU Shaojun, JU Xiaotang, LU Xing, et al. Improved nitrogen management for an intensive winter wheat/summer maize double-cropping system[J]. Soil science society of america journal, 2012,76(1):286-297.[10]ABRO S A, TIAN Xiaohong, WANG Xudong, et al. Decomposition characteristics of maize(Zea mays. L.)straw with different carbon to nitrogen(C/N)ratios under various moisture regimes[J]. African journal of biotechnology, 2011,10(50):10149-10156.[11]张新燕, 蔡焕杰, 朱德兰. 沟灌条件下灌水沟入渗特性研究[J]. 中国农村水利水电, 2012(3):7-11. ZHANG Xinyan, CAI Huanjie, ZHU Delan. Experimental research on characteristics of two-dimensional infiltration in furrow irrigation[J]. China rural water and hydropower, 2012(3):7-11.(in Chinese)[12]AMER A M.Effects of water infiltration and storage in cultivated soil on surface irrigation[J]. Agricultural water management, 2011,98(5):815-822. [13]NIE Weibo, FEI Liangjun, MA Xiaoyi. Estimated infiltration parameters and manning roughness in border irrigation[J]. Irrigation and drainage, 2012,61(2):231-239.[14]KOECH R K, SMITH R J, GILLIES M H. Evaluating the performance of a real-time optimisation system for furrow irrigation[J]. Agricultural water management, 2014,142:77-87.[15]AKBAR G, RAINE S, MCHUGH, A D, et al. Managing lateral infiltration on wide beds in clay and sandy clay loam using Hydrus 2D[J]. Irrigation science, 2015,33(3):177-190.[16]BAUTISTA E, WARRICK A, STRELKOFF T. New results for an approximate method for calculating two-dimensional furrow infiltration[J]. Journal of irrigation and drainage engineering, 2014,140(10):1-10.[17]程东娟, 霍自民, 刘淑桥. 覆膜方式对沟灌水分入渗影响[J]. 水利水电技术, 2013,44(6):101-104. CHENG Dongjuan, HUO Zimin, LIU Shuqiao. Impact from film mulching mode on water infiltration under furrow irrigation[J]. Water resources and hydropower engineering, 2013,44(6):101-104.(in Chinese)[18]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, 1988:299-303.[19]郑健, 王燕, 蔡焕杰,等. 植物混掺土壤水分特征曲线及拟合模型分析[J].农业机械学报,2014,45(5):107-112. ZHENG Jian, WANG Yan, CAI Huanjie, et al. Soil-water characteristic curves of soil with plant additive and analyses of the fitting models[J]. Transactions of the Chinese society for agricultural machinery, 2014,45(5):107-112.(in Chinese) |
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