摘要
为了合理地利用有机肥,对紫云英、菜籽饼和鸡粪堆肥中的C、N元素矿化规律进行了研究。结果表明:①紫云英中的有机C在土壤中矿化具有明显的阶段性,主要集中在埋设土壤后的6周内。菜籽饼和鸡粪堆肥则不具阶段性,在烟株整个生长季节内C素矿化一直处于相对较高的状态;②紫云英中的N素矿化率较高,并且整个生长季中93%的N素集中在埋设土壤后8周内释放,较符合烟株对N素的需求规律。
In order to rationally utilize organic fertilizers, the mineralization of carbon and nitrogen in organic manures , Astragalus sinicus L., rapeseed cake and hen manure, in cigar wrapper tobacco fields was studied. The results showed that: 1) organic carbon in Astragalus sinicus L. had an obvious mineralizing stage during the first 6 weeks after being embedded in soil, while in stockpiled rapeseed cake and hen manure it was in a relatively higher mineralizing status through whole growing season; 2) mineralizing rate of nitrogen in Astragalus sinicus L. was higher than the others, and 93% of nitrogen in whole growing season was released in 8 weeks after being embedded in soil, well harmonized with the requirement for the growth of tobacco plants.
出处
《烟草科技》
EI
CAS
北大核心
2005年第6期39-42,共4页
Tobacco Science & Technology
基金
国家烟草专卖局项目"优质雪茄外包皮烟开发及应用研究"(110200201012)。
关键词
烟田
紫云英
菜籽饼
鸡粪
C
N
矿化
Cigar wrapper tobacco
Astragalus sinicus L.
Rapeseed cake
Hen manure
Carbon
Nitrogen
Mineralization
