中国生态农业学报2011，Vol.19Issue(3)：574-578,5.DOI:10.3724/SP.J.1011.2011.00574
播种量对紫云英生长及物质养分积累的影响
Effect of seeding rate on growth and nutrient accumulation of Chinese milk vetch
摘要
Abstract
A field trial was conducted to study the effect of seeding rate on the growth, fresh yield and nutrient accumulation of Chinese milk vetch (Astragalus sinicus L.). The trial included 7 seeding rate treatments ranging from 7.5 to 52.5 kg·bm-2. The results showed that the number of emerged seedling increased with increasing seeding rate. However, number of branch and compound leaf, weight for per plant decreased with increasing seeding rate. Fresh yield also increased with increasing seeding rate. Significant differences were noted in fresh yield under seeding rate of 7.5～30.0 kg·hm-2. Once seeding rate above 30.0 kg·hm-2, however, no significant difference existed among the treatments. Seed yield initially increased with increasing seeding rate up to 15.0 kg.bm-2, and then decreased with increasing seeding rate. Seeding rate had no significant influence on nutrient content, but greatly influenced nutrient accumulation. The accumulation of C, N, P, K, Ca, Mg, Fe, Mn, Cu and Zn significantly increased with increasing seeding rate. It was therefore concluded that the most suitable seeding rate was 30.0 kg·hm-2 for green manure turnover, and 15.0 kg·hm-2 for seed production.关键词
紫云英/适宜播种量/养分含量/养分积累量/绿肥翻压/种子生产分类
农业科学引用本文复制引用
潘福霞,李小坤,鲁剑巍,鲁君明,刘威,魏云霞,耿明建,曹卫东..播种量对紫云英生长及物质养分积累的影响[J].中国生态农业学报,2011,19(3):574-578,5.基金项目
公益性行业(农业)科研专项经费项目(200803029)资助 （农业）
