土壤2012，Vol.44Issue(1)：67-72,6.
不同播期对紫云英生长及物质养分积累的影响
Effects of Sowing Date on Chinese Milk Vetch Growth and Nutrient Accumulation
摘要
Abstract
A field trial was carried out to study the influence of different sowing date on Chinese milk vetch growth, fresh yield and nutrient accumulation. The results showed that the shoot height, compound leaves per plant, apparent leaf area, weight per plant decreased as the sowing date postponed. Fresh yield decreased prominently as the sowing date postponed, sowing date at 25th September could get the highest yield, reached to 31 833 kg/hm2. Sowing date at 2md October could get the highest seed yield 227 kg/hm2. N, P, K and Cu contents of the shoot decreased as the sowing date postponed, but Fe and Mn contents increased when the sowing date later than 30th October, while there was no difference among the treatments with the Ca, Mg and Zn contents. The nutrient accumulation decreased as the sowing date postponed. The study showed that sowing date had great effect on Chinese milk vetch, the last ten-days period of September and the first ten-days period of October was the best sowing date under this condition of experiment.关键词
紫云英/播期/产量/养分含量/养分积累量Key words
Chinese milk vetch (Astragalus sinicus L)/ Sowing date/ Yield/ Nutrient content/ Nutrient accumulation分类
农业科技引用本文复制引用
潘福霞,李小坤,鲁剑巍,鲁君明,刘威,魏云霞,耿明建,曹卫东..不同播期对紫云英生长及物质养分积累的影响[J].土壤,2012,44(1):67-72,6.基金项目
公益性行业(农业)科研专项经费项目(200803029)资助. （农业）
