摘要
对铜仁地区连片烟田耕作层土样及土壤剖面分层土样进行了研究。结果表明,铜仁地区植烟土壤类型主要有黄壤、水稻土和石灰土,其中,黄壤和水稻土是主要的植烟土壤类型;土壤有机质的平均含量为26.57 g/kg,碱解氮平均含量为133.4 mg/kg,速效磷(P2O5)平均含量为14.2 mg/kg,速效钾(K2O)平均含量为162.1 mg/kg,均达较高水平,但不同土壤中各种物质含量变幅较大;土壤pH值平均为6.6,适宜种烟;土壤有效性钙、镁、硫及大部分微量元素丰富,氯偏低,硼缺乏。综合分析,铜仁地区烤烟施肥原则应防止土壤酸化、减少氮、磷的施用量,增加钾肥、硼肥和有机质的施用量。
The results from studying soil samples of the plowing layer and layers with different depth in Tongren region showed that yellow soil and paddy soil are main soil kinds for tobacco cultivation,the average contents of organic matter,alkali-hydrolyzable nitrogen,available P and available K in soils for tobacco cultivation were 26.57g/kg,133.4mg/kg,14.2mg/kg and 162.1mg/kg respectively,but there were obvious difference in different nutrients content among different soil kinds,the average pH was 6.6,which was suitable for tobacco cultivation,and the soils were rich in active Ca,Mg,S and most trace elements except Cl and B.The application measure should include reducing application amount of N and P and increasing application amount of K,B and organic matter to prevent soil acidification.
出处
《贵州农业科学》
CAS
北大核心
2010年第6期126-129,133,共5页
Guizhou Agricultural Sciences
关键词
烤烟
植烟土壤
类型
肥力
性质
tobacco
soil for tobacco cultivation
kind
fertility
character
