Abstract:In order to research the effect of different irrigation methods and water quality on acidic soil water repellency, pH, salt and organic matter content, four kinds of low-quality water such as reclaimed water and diluted 2, 4, 6 times of reclaimed water were selected, distilled water as contrast, using reclaimed water for continuous irrigation as well as alternate irrigation with reclaimed water and distilled water to do red soil column infiltration exreriments for more than 1 year. Results show that induction of subcritical water repellency following different irrigation with reclaimed water, the contact angle of red soil under the continuous irrigation grew by an average of 23.1° as against alternate irrigation. Both irrigation methods increase the acidity of red soil as well as salt and organic matter content, and the growth rate under continuous irrigation is larger than that of alternating irrigation. In the continuous irrigation, the soil water repellency, pH, salt and organic matter content can be described by quadratic function with the change of water quality, and the determination coefficient is above 0.9. In the alternate irrigation, the relationship between red soil water repellency, salt and water quality can be described by quadratic function, and the determination coefficients are all above 0.9, but the soil pH and organic matter content have no obvious correlation between it. In the two irrigation conditions, soil water repellency is negatively correlates with pH, it is positively correlates with salt content, and it is negatively correlates with organic matter content in the continuous irrigation, while in the alternate irrigation it is opposite. The alternate irrigation with reclaimed water and distilled water can restrain the generation of soil water repellency.
胡廷飞, 王辉*, 胡传旺, 卢佳宇, 朱晋斌. 灌溉水质和灌水方式对红壤斥水性及其理化性质的影响[J]. 排灌机械工程学报, 2018, 36(8): 651-655.
HU Tingfei, WANG Hui*, HU Chuanwang, LU Jiayu, ZHU Jinbin. Effects of different water quality and irrigation methods on red soil water repellency and physical-chemical properties. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(8): 651-655.
[1]赵全勇,李冬杰,孙红星,等.再生水灌溉对土壤质量影响研究综述[J].节水灌溉,2017(1):53-58. ZHAO Quanyong, LI Dongjie, SUN Hongxing, et al. Review of study on effect of reclaimed water irrigation on soil quality[J]. Water conservation irrigation, 2017(1):53-58.(in Chinese)[2]韩洋,李平,齐学斌,等.再生水不同灌水水平对土壤酶活性及耐热大肠菌群分布的影响[J].环境科学,2018(9):1-12. HAN Yang, LI Ping, QI Xuebin, et al. Effects of different irrigation levels of reclaimed water on soil enzyme activities and distribution of thermotolerant coliforms[J]. Environmental science, 2018(9):1-12.(in Chinese)[3]SCHACHT K, CHEN Y, TARCHITZKY J, et al. Impact of treated wastewater irrigation on water repellency of Mediterranean soils[J]. Irrigation science, 2014, 32(5):369-378.[4]AZOUZI R, CHAREF A, ZAGH DOUDI S, et al. Effect of long-term irrigation with treated wastewater of three soil types on their bulk densities, chemical properties and PAHs content in semi-arid climate[J]. Arabian journal of geosciences, 2016, 9(1):1-13.[5]商艳玲, 李毅, 朱德兰. 再生水灌溉对土壤斥水性的影响[J]. 农业工程学报, 2012, 28(21):89-97. SHANG Yanling, LI Yi, ZHU Delan. Effects of reclaimed water irrigation on soil water repellency[J]. Transactions of the CSAE, 2012, 28(21):89-97.(in Chinese)[6]杨昊天,刘立超,高艳红,等.腾格里沙漠沙丘固定后土壤的斥水性特征研究[J].中国沙漠,2012,32(3):674-682. YANG Haotian, LIU Lichao, GAO Yanhong, et al. Characteristics of soil water repellcncy in stabilized sand dunes in the tengger desert[J]. Journal of desert research,2012,32(3):674-682.(in Chinese)[7]NADAV I, TARCHITZKY J, CHEN Y. Induction of soil water repellency following irrigation with treated wastewater: effects of irrigation water quality and soil texture[J]. Irrigation science, 2013, 31(3):385-394.