摘要
对氮肥的两种主要化学形态（即硝态氮和铵态氮）在土－水系统中的形态转化过程及控制因素进行了探讨。结果表明：供试系统中硝化作用与脱氮化作用都较强烈，硝化作用先于脱氮化作用，其速度明显比脱氮化作用快。硝化作用与脱氮化作用的耦合是氮化合物转化的核心机制。决定亚硝酸盐积累的主要因素是温度。
The transformation processes and control factors of the two main chemical forms(NO_3 -N,NH_4-N)of chemi-cal fertilizers in soil -water systems have been studied .The re-sults show that the two processes of mitrification and denitrifica-tion in the systems were all strong, and nitrification started earlier and goes faster than denitrification,The couple reaction of deni-trification and nitrification in soil-water system is the key mech- anism of the nitrogenous compound transformation,The main en-vironmental factor which control the degree of nitrite accumula-tion is temperature.
出处
《农村生态环境》
CSCD
1995年第3期19-22,共4页
Rural Eco-Environment
基金
国家自然科学基金
关键词
土-水体系
氮素
硝化作用
脱氮化作用
soil- water system, nitrogen,nitrification,denitrification,influencing factor
