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1. 中国地质大学(武汉)环境学院
2. 河南省地质局地质灾害防治中心
3. 中国地质大学(武汉)计算机学院
4. 新疆水利水电科学研究院
5. 塔里木河流域巴音郭楞管理局水利科研所
Published:2026
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张茗惠, 张峻华, 盛统民, et al. 微咸水膜下滴灌棉花根系时空分布规律及三维动态生长模拟[J]. Bulletin of Geological Science and Technology, 2026, 45(1): 279-290.
张茗惠, 张峻华, 盛统民, et al. 微咸水膜下滴灌棉花根系时空分布规律及三维动态生长模拟[J]. Bulletin of Geological Science and Technology, 2026, 45(1): 279-290. DOI: 10.19509/j.cnki.dzkq.tb20240155.
新疆地处我国干旱-半干旱区,为节约水资源广泛使用微咸水膜下滴灌技术进行棉花种植,但微咸水利用不当易引起土壤盐渍化,在棉花根系密度较大的区域,根系强烈的吸水作用使土壤水分降低、盐分在区域内过量累积,引起棉花减产。为确保微咸水膜下滴灌棉田土壤生长环境及棉花产量,应充分考虑棉花根系分布对田间水盐运移的影响。本研究基于新疆巴音郭楞管理局水利科研所灌溉试验站棉田开展野外田间试验获取棉花根系生长参数,构建微咸水膜下滴灌棉花根系生长模型,定量刻画棉花根系时空分布规律。研究结果表明:(1)根系的空间分布受土壤水分和盐分的影响,蕾期至花铃期根系更多地集中在滴灌带与宽行位置,盛铃期至吐絮期根系在深度50 cm以上有明显衰退,而在90~130 cm土壤中根系有所发育;(2)棉花根系三维生长模型的预测趋势与实际观测值保持一致,模拟值与实测值对比平均相对误差MRE在0.248 6~0.537 8之间,均方根误差RMSE在2.412 7~4.871 0 cm/cm
2
之间,符合指数d在0.754 1~0.952 9之间,模拟结果总体能够描述棉花根长密度RLD分布;(3)棉花根系的三维模拟考虑了大田种植环境的生长情况,模拟结果达到了三维动态生长的效果,模型能够较好地模拟根系生长发育进程的形态结构。基于微根管法原位动态监测,利用CPlantBox建模框架能够构建微咸水膜下滴灌棉花根系生长模型,研究成果可为探究根系形态时空分布对田间土壤水分迁移及根区水盐分布的影响机制奠定基础,对实现新疆棉花高产稳产具有重要的理论和实践意义。
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Shehan Morandage,Andrea Schnepf,Daniel Leitner,Mathieu Javaux,Harry Vereecken,Jan Vanderborght.Parameter sensitivity analysis of a root system architecture model based on virtual field sampling[J].Plant and Soil,2019.
Wang Z.,Fan B.,Guo L..Soil salinization after long‐term mulched drip irrigation poses a potential risk to agricultural sustainability[J].European Journal of Soil Science,2018(1).
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