摘要
对大豆重迎茬的黑土和黑钙土进行养分分析。结果表明,随着连作年限增加,黑土(哈尔滨)全N、全P、缓效K、碱解N、速效P、速效K、有效Fe、Zn、Mn含量以及pH值都下降,有机质变化不明显;黑钙土(齐齐哈尔)全N、全P、缓效K、碱解N、速效K、有机质含量呈增加趋势,而速效P、有效Cu、Zn、Fe、Mn含量以及pH值则呈下降趋势。
The nutrients in the Black Soils and Chernozemis under
Continuous and Partrition rotation soybean Were anytlsed. The results showed that with the
increase of yeas of continuous cropping, the concentration of total N. total P,none-exchageble
potassiumr, availabele N, avaiable P, available K, available Fe, available Zn, available Mn, pH
dereosed but orgauic matter did not regularly change in Black Soils in Harbin area. Total N,
total P, none-exchageable potarrium, available N available K, organic matter incresed, but
available P, available Cu, available Zn, available Fe, available Mn, pH dereased in
Chernozems in QiqiHer area.
出处
《东北农业大学学报》
CAS
CSCD
1999年第1期32-35,共4页
Journal of Northeast Agricultural University
关键词
大豆
重迎茬
土壤养分
continuous and parition rotation soybean, Soil nutrient