期刊论文

中文

长江流域资源与环境

1004-8227

2017

26

2

257-263

10.11870/cjlyzyyhj201702011

国家自然科学基金青年项目(41601215, 41001125) 湖北省自然科学基金重点项目(2015CFA141) 华中师范大学中央高校基本科研业务费(CCNU16A05015, CCNU15A05002)

本校为第一机构

利用田间染色示踪和室内样品分析相结合的方法,研究了江汉平原不同水耕年限稻田土壤水分运动特征及其影响因素,期望为制定合理的稻田水分管理措施提供科学依据。结果表明:新稻田(水耕17a)与老稻田(水耕大于100a)土壤理化性质差异显著,引发土壤剖面内不同水分运动特征。新稻田垂直渗漏较老稻田明显,表现为新稻田有更大的染色深度。老稻田染色区域主要集中在耕作层,染色面积为48.52%;犁底层和底土层染色面积较小,仅为3.17%和0.2%。除耕作层外,新稻田其他土层染色面积均大于老稻田,且优先流特征较老稻田明显。老稻田侧向水分运动较新稻田强烈,其侧流剖面的染色面积(15.35%)显著高于新稻田(8.45%),老...

Based on the field dye tracing experiment and laboratory analysis of soil samples, the characteristics of soil water transport in different aged paddy fields were revealed. This study is expected to provide scientific basis for the reasonable filed water management. The results showed that significant differences of physical and chemical soil properties between new paddy field （NF, aged 17 years） and old paddy field （OF, aged more than 100 years）, which was expected to affect the soil water movement processes. Water percolation was more lik...