摘要
土壤pH是反映土壤质量的重要指标。本文通过土壤空间移位的方法将东北黑土区由南向北5个不同有机质含量的黑土移至黑龙江省海伦市中国科学院海伦农业生态实验站,建成长期定位试验小区,对在相同外界环境条件下影响不同有机质含量黑土pH的因素进行了试验测定。结果表明:黑土pH在玉米全生育期呈波动变化的趋势,变幅达0.1-1.2;施肥、土壤有机质含量均对黑土pH有很大的影响,土壤含水量与农田黑土pH呈显著性负相关,黑土pH受降雨强度影响显著,受雨水pH影响不显著。
Soil pH is an important indicator in assessing soil quality, pH variation and its influencing factors of black soil was studied in the same environmental condition by a soil removal based on a long-term field experiment,in which the samples were collected from south to north of northeast black soil zone with five different organic matter contents and moved to Hailun Agricultural Ecology Experimental Station, CAS.The results showed： black soil pH varied dynamically during whole growth period, their variation ranged from 0.1 to 1.2. Fertilizer application and soil organic matter contents greatly impacted black soil pH. There was a significant negative relationship between soil moisture and black soil pH. The soil pH was significantly influenced by precipitation, not significantly by rainfall pH.
出处
《农业现代化研究》
CSCD
北大核心
2008年第3期365-367,共3页
Research of Agricultural Modernization
基金
国家自然科学基金面上项目《利用空间移位研究黑土生物活性对生态环境改变的响应》(编号:40601048)
中国科学院东北地理与农业生态研究所学科前沿领域项目《空间移位条件下有机质对土壤肥力及生产力的贡献》(编号:KZCX3-SW-NA3-06)
关键词
黑土
有机质
土壤PH
土壤含水量
降雨
black soil
organic matter
soil pH
soil moisture
precipitation
