施用8种野百合属绿肥后砖红壤速效钾含量随时间的动态变化

摘要

研究施用8种野百合属绿肥后砖红壤速效钾含量随时间的动态变化.结果表明,施用不同的绿肥对土壤速效钾含量的影响不同,但对土壤速效钾含量影响的基本规律一致.施用绿肥后的不同时间内能不同程度的提高土壤速效钾的含量,提高幅度最大的为埋田一个月,且施用绿肥后的土壤速效钾含量显著高于对照(不施用绿肥的土壤).%The temporal dynamic changes of the Latosol potassium after application of the eight kind of Crotalaria were studied in this paper.The results showed that: the application of different green manures on soil available potassium content was different, but the impact on soil available potassium content had the similar rules.Application of green manures in soil could to some extent increase the soil available potassium content and the soil available potassium content after application of different green manures was also different with the change of application time, the best time to increase soil available potassium is the first month.