土壤学报2011，Vol.48Issue(6)：1173-1179,7.
培养温度和土壤类型对土壤硝化特性的影响
EFFECTS OF INCUBATION TEMPERATURE AND SOIL TYPE ON SOIL NITRIFICATION
摘要
Abstract
An incubation experiment was conducted to evaluate the effects of temperature and soil types on soil net nitrification rate. Four temperatures (15, 20, 25, and 30%) were set, and three types of soils (black soil, chao soil, and red soil) with high and low content of soil organic matter (SOM) were selected. Urea N was applied at an equivalent rate of 200 mg kg-1 soil. All soil nitrification rates increased along with incubation temperature within the range of 15 ～ 30% , and the relationship between accumulated soil NO,-N contents and accumulation temperature of incubation (T x t, ℃ ×d) could be fitted by a single exponential model. Under the same incubation temperature, the soil nitrification rates decreased in a sequence of; chao soil with high SOM > chao soil with low SOM > black soil with high SOM > black soil with low SOM > red soil with low SOM > red soil with high SOM. There was a significant relationships between soil nitrification rate (incubated under 25℃ for 14 days) and soil total phosporus (TP) , total potassium (TK) , clay content and pH. Soil pH and TP content was the key factors controlling nitrification rate (R2 =0. 981).关键词
硝化率/温度/土壤类型/pH/有机质Key words
Nitrification rate/ Temperature/ Soil type/ pH/ Organic matter分类
农业科技引用本文复制引用
王帘里,孙波..培养温度和土壤类型对土壤硝化特性的影响[J].土壤学报,2011,48(6):1173-1179,7.基金项目
国家重点基础研究发展规划项目(2011CB100506)、国家自然科学基金项目(40871123)和国家科技支撑计划(2009BA DC6 B003)资助 （2011CB100506）
