Single-point free infiltration characteristics of muddy water film hole irrigation with γ-PGA additive
CHEN Lin1, FEI Liangjun1, WANG ZiLu2, GUO Xin3, ZENG Jian1, YANG yang1
1.Institute of Water Resources and Hydro-electric Engineering, Xi′an University of Technology, Xi′ an, Shaanxi 710048, China; 2.Yellow River Institute of Hydraulic Research, Zhengzhou, Henan 450003, China; 3.Shandong Freda Biological Technology Co., Ltd., Jinan, Shandong 250101, China
Abstract:In order to explore the effect of gamma-PGA on soil water infiltration and soil environmental improvement of muddy water film hole irrigation, we used the test of single-point free infiltration of muddy water Film Hole irrigation to study the soil water infiltration and water holding capacity with the different γ-PGA content being mixed with soil(0,0.1%,0.5%,1%). The results indicated that compared with treatment C, the cumulative infiltration volume of C1, C2, C3 were decreased by 17.27%, 30.91% and 42.73%, respectively. The constant infiltration rate of C1, C2, C3were decreased by 17.28%, 35.79% and 57.32%, respectively. But compared with treatment C, the saturated soil moisture content C1, C2, C3 were increased by 7.38%, 35.27% and 39.62%, respectively. The infiltration coefficient in Kostiakov formula reduced from0.132 8 to 0.070 7 and the infiltration index increased from 0.774 6 to 0.812 7. γ-PGA hindered the migration of vertical wetting front and led to keep the soil water in soil root water absorption layer. Butγ-PGA had no effect on the migration of horizontal wetting front and had propulsion function on horizontal movement of soil water. The treatment with 0.5% γ-PGA content was the best. In addition, γ-PGA could change the water distribution in soil profile. γ-PGA could concentrate water in the upper soil to satisfy the full water supply for crop seedling stage and improve irrigation water use efficiency.
[1]KUBOTA H, MATSUNOBU T, UOTANI K. Natural and edible biopolymer poly-γ-glutamic acid: synthesis, production, and applications [J]. Chemical record, 2005, 5(6): 352—366.[2]彭英云,张涛,缪铭,等. γ-聚谷氨酸的合成、性质和应用[J]. 食品与发酵工业,2012,06:133-138. PENG Yingyun, ZHANG Tao, MIAO Ming, et al. The synthesis, properties and application of γ-polyglutamic acid[J]. Food and fermentation industries, 2012,38(6):133-138.(in Chinese)[3]李晶博,李丁,邓毛程,等. γ-聚谷氨酸的特性、生产及应用[J]. 化工进展,2008,27(11):1789-1792,1799. LI Jingbo, LI Ding, DENG Maocheng,et al. Properties, production and application of γ-polyglutamic acid[J]. Chemical industry and engineering progress, 2008,27(11):1789-1792,1799.(in Chinese)[4]SHIH I L, VAN Y T. The production of poly-(γ-glutamic acid)from microorganisms and its various applications[J]. Bioresource technology,2001,9(3):207-225.[5]何其华,何永华,包维楷. 干旱半干旱区山地土壤水分动态变化[J]. 山地学报,2003,21(2):149-156. HE Qihua, HE Yonghua, BAO Weikai. Research on dynamics of soil moisture in arid and semiarid mountai-nous areas[J]. Journal of mountain research, 2003,21(2):149-156.(in Chinese)[6]李静,郑焕兰,刘常金. γ-聚谷氨酸高吸水树脂的结构和形态[J]. 安徽农业科学,2010,38(3):1119-1121. LI Jing, ZHENG Huanlan, LIU Changjin. Structure and morphology of γ-poly glutamic acid high water-absorbing resin[J].Journal of anhui agricultural sciences, 2010, 38(3):1119-1121.(in Chinese)[7]王传海,何都良,郑有飞,等. 保水剂新材料γ-聚谷氨酸的吸水性能和生物学效应的初步研究[J]. 中国农业气象,2004,25(2):19-22. WANG Chuanhai, HE Duling, ZHENG Youfei, et al. A preliminary study on water absorption properties and biological effects of a new water-holding agent γ-poly glutamate [J]. Agricultural meteorology, 2004,25(2):19-22.(in Chinese)[8]褚群,董春娟,尚庆茂. γ-聚谷氨酸对番茄穴盘育苗基质矿质养分供应及幼苗生长发育的影响[J]. 植物营养与肥料学报,2016,22(3):855-862. CHU Qun,DONG Chunjuan,SHANG Qingmao. Effects of γ-poly glutamic acid on substrate mineral nutrient supply and growth of tomato plug seedlings[J]. Journal of plant nutrition and fertilizer, 2016, 22(3):855-862.(in Chinese)[9]孙刚忠. 聚γ-谷氨酸在小白菜上的应用效果及其作用机理[D].武汉:华中农业大学,2012.[10]XU Z, WAN C, XU X, et al.Effect of poly(γ-glutamic acid)on wheat productivity, nitrogen use efficiency and soil microbes[J]. Journal of soil science and plant nutrition, 2013, 13(3), 744-755.[11]史文娟,梁嘉平,陶汪海,等. 添加γ-聚谷氨酸减少土壤水分深层渗漏提高持水能力[J]. 农业工程学报,2015,31(23):94-100. SHI Wenjuan, LIANG Jiaping, TAO Wanghai,et al. γ-PGA additive decreasing soil water infiltration and improving water holding capacity[J].Transactions of the CSAE, 2015,31(23):94-100.(in Chinese)[12]胡建桥,王锦辉,张建香,等. 浑水膜孔灌自由入渗特性试验研究[J]. 排灌机械工程学报,2017,35(1):80-86. HU jianqiao, WANG jinhui, ZHANG Jianxiang, et al. Experimental study of free infiltration characteristics of muddy water film hole irrigation [J].Journal of drainage and irrigation machinery engineering, 2017,35(1): 80-86.(in Chinese)[13]费良军,王锦辉,金世杰. 不同膜孔直径的浑水膜孔灌自由入渗特性研究[J]. 农业机械学报,2016,47(2):172-178. FEI Liangjun, WANG Jinhui, JIN Shijie. Free infiltration characteristics of muddy water film hole irrigation with different film hole diameters [J]. Transactions of the CSAM, 2016,47(2):172-178.(in Chinese)[14]苏杨,朱健,王平,等. 土壤持水能力研究进展[J]. 中国农学通报,2013,29(14):140-145. SUYang, ZHU Jian, WANG Ping, et al. Research progress on soil water holding capacity [J]. Chinese agricultural science bulletin, 2013,29(14):140-145.(in Chinese)[15]王全九,邵明安,郑纪勇. 土壤水分运动与溶质迁移[M]. 北京: 中国水利水电出版社, 2007.[16]于林艳. 聚谷氨酸降解、交联及在化妆品中应用研究[D].济南:山东大学,2016.[17]李卓,吴普特,冯浩,等. 不同粘粒含量土壤水分入渗能力模拟试验研究[J]. 干旱地区农业研究,2009,27(3):71-77. LI Zhuo, WU Pute, FENG Hao,et al. Effects of soil clay particle content on soil infiltration capacity by simulated experiments[J].Agricultural research in the arid areas,2009,24(3):71-77.(in Chinese)