摘要
1998年对黑土区 (弓棚镇 )的耕层土壤养分进行分析 ,并与 1990年该区土壤的化验结果进行了比较。结果表明 :全区土壤速效氮、速效磷含量有所增加 ,以速效磷增加尤为突出 ,速效钾降低严重。与其它黑土区的土壤养分变化状况基本一致 ,并系统分析了土壤养分降低的原因 。
Soil samples of cultivated horizon from Gongpeng town were analyzed in 1998 and the results were compared with that in 1990. The comparison showed that the content of available N, P increased and the increase of available P was more evident. The content of available K significantly decreased. The reason of the change was analyzed and fertilizer application was recommended.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2001年第1期65-68,共4页
Journal of Jilin Agricultural University
基金
国家农业示范区资助项目
关键词
黑土
土壤养分
施肥
black soil
soil nutrient
fertilization
