摘要
通过天然沸石改良黑土试验,采用干筛法、湿筛法分别测定土壤中机械稳定性团聚体和水稳性团聚体含量,分析了不同掺配量天然沸石对土壤平均质量直径（MWD）、几何平均直径（GMD）、团聚体破坏率（PAD0.25）、〉0.25 mm机械稳定性团聚体含量和〉0.25 mm水稳性团聚体含量（WSA0.25）的影响,结果表明：在黑土中加入天然沸石能够提高黑土湿筛时的MWD和GMD,提高〉0.25 mm机械稳定性团聚体含量;在天然沸石掺配量为15%时对提高土壤中〉0.25 mm机械稳定性团聚体含量的效果最好,且主要以增加2~1、1~0.5 mm粒级团聚体为主;改良后土壤团聚体的团聚度提升,结构稳定性增强,说明用天然沸石改良黑土能够提高黑土抗侵蚀能力。
The paper determined the contents of mechanical stability aggregation and water stable aggregates of soil respectively by using the methods of dry screening and wet screening and analyzed the influence of different amounts of added natural zeolite to the mean weight diameter（MWD）,geometric mean diameter（GMD）,percentage of aggregate destruction（PAD_（0.25））,mechanical stability aggregation 0.25 mm and water stable aggregates（WSA_（0.25）） through using natural zeolite to improve black soil tests.The outcomes show that a） adding natural zeolite into black soil can increase MWD and GMD in wet screening and increase mechanical stability aggregation 0.25 mm;b） the effect of increasing mechanical stability aggregation 0.25 mm is the best when adding amount is 15%and mainly increasing 2-1 mm and 1-0.5 mm aggregates and;c） the aggregate degree of improved soil aggregation is increased and structural stability is strengthened,showing to improve black soil by natural zeolite can increase the anti-erosion ability.
出处
《中国水土保持》
2016年第5期38-41,77,共4页
Soil and Water Conservation in China
基金
北京林业大学青年教师科学研究中长期项目(2015ZCQSB-01)
关键词
天然沸石
黑土
团聚体含量
水稳性团聚体
natural zeolite
black soil
aggregate content
water stable aggregates
作者简介
戴显庆（1989-），男，黑龙江依安县人，硕士研究生，主要研究方向为土壤修复与生态恢复；
通信作者冀晓东（1978-），男，河南郑州市人，副教授，主要从事土壤修复与生态恢复、林木抗风、植被固土机制研究。
