|
|
|
| Elements release laws of water and mulched gravel interaction |
| LI Wangcheng1,2,3, WANG Xia1*, LIU Minan4, WANG Shuangtao1, DONG Yaping1, ZHAO Yan1 |
| 1.School of Civil and Hydraulic Engineering, Ningxia University, Yinchuan, Ningxia 750021, China; 2.The Ningxia Water-saving Irrigation and Water Resources Regulation and Control Engineering Technology Research Center, Yinchuan, Ningxia 750021, China; 3.Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest China of Ministry of Education, Yinchuan, Ningxia 750021, China; 4.School of Agriculture, Ningxia University, Yinchuan, Ningxia 750021, China |
|
|
|
|
Abstract To understand the elements release laws of dry-wet alternation and freeze-thaw cycles of the mulched gravel, a major mulched gravel in Zhongwei area of Ningxia was studied.The composition of green slate gravel elements and the accumulation process of gravel solutions of dry-wet alternation and freeze-thaw cycles were analyzed. The gravel was composed of 25 elements such as O, Si, and Fe, which contained a variety of mineral elements required for plant growth and soluble in water.Major elements, trace elements, and beneficial elements required for the growth of plants were released by the gravel during the dry-wet alternation and freeze-thaw cycles. After 50 dry-wet alternations and freeze-thaw cycles, the cumulative release of elements was 786.90 mg and 958.18 mg, respectively. The elemental composition of a major mulched gravel in the Zhongwei area of Ningxia was known, and the elements release laws of mulched gravel during the dry-wet alternation and freeze-thaw cycles were known. It was of great significance to maintaining the health of local soils and improving the quality of crops.
|
|
Received: 28 April 2018
|
|
|
|
| [1]ZHAO W J, SHENG J, LI Z L, et al. Spatial variability of soil salinity in a gravel-sand mulched jujube orchard at different scales[J]. Journal of irrigation & drainage engineering, 2017, 143(6):04017009.[2]张继红,康恩祥,何宝林.砂砾粒径对砂田西瓜根际温度的效应[J].甘肃农业科技,2014(10):41-45. ZHANG Jihong, KANG Enxiang, HE Baolin.Temperature effects of rhizosphere in the gravel-sand mulching soil with different grain size on watermelon field[J]. Gansu agricultural science and technology, 2014(10):41-45.(in Chinese)[3]赵文举,唐学芬,李宗礼,等. 压砂地土壤盐分时空变异规律研究[J]. 应用基础与工程科学学报,2016(1):12-21. ZHAO Wenju, TANG Xuefen, LI Zongli,et al. Study of spatial-temporal variability of soil salinity of gravel-sand mulched field[J]. Journal of applied basic and engineering sciences, 2016(1):12-21.(in Chinese)[4]贾海梁. 多孔岩石及裂隙岩体冻融损伤机制的理论模型和试验研究[D].北京:中国地质大学,2016.[5]王鹏,许金余,方新宇,等.红砂岩吸水软化及冻融循环力学特性劣化[J].岩土力学,2018(6):1-8. WANG Peng, XUJinyu, FANG Xinyu,et al. Red sandstone water softening and degradation of freeze-thaw cycle mechanical properties [J]. Rock and soil mechanics, 2018(6):1-8.(in Chinese)[6]韩铁林,师俊平,陈蕴生.冻融循环和干湿循环作用下砂岩断裂韧度及其与强度特征相关性的试验研究[J].固体力学学报,2016,37(4):348-359. HAN Tielin,SHI Junping,CHEN Yunsheng. Experiment study on fracture toughness and its correlation with strength characteristics of sandstone under freeze-thaw cycle and dry-wet cycle [J]. Journal of solid me-chanics, 2016,37(4):348-359.(in Chinese)[7]申艳军,杨更社,荣腾龙,等.岩石冻融循环试验建议性方案探讨[J].岩土工程学报,2016,38(10):1775-1782. SHENG Yanjun,YANG gengshe, RONG Tenglong,et al. Proposed scheme for freeze-thaw cycle tests on rock[J]. Chinese journal of geotechnical engineering, 2016, 38(10):1775-1782.(in Chinese)[8]潘瑞炽,王小菁,李娘辉.植物生理学[M].北京:高等教育出版社,2012:33-34. |
|
|
|
