湖南农业大学学报（自然科学版）2011，Vol.37Issue(6)：586-591,6.DOI:10.3724/SP.J.1238.2011.00586
不同种植密度和施肥水平对油菜养分吸收和产量的影响
Effects of different planting densities and fertilizer application levels on nutrients absorption and yield of oilseed rapeseed
摘要
Abstract
Field experiments were conducted to investigate effects of different planting densities and fertilizer application levels on N, P, K. (nitrogen, phosphorus, potassium) uptake and seed yield of rapeseed variety Xiangzayou 763.The results showed that, yield of high fertilizer application treatment were significantly higher than that in the low fertilizer application treatment under the same planting density, and there were significant or highly significant differences in seed yield among the 4 fertilizer application treatments. Seed yield in 2 treatments (higher fertilizer application level with lower planting density treatment, lower fertilizer application level with higher planting density treatment) were relatively higher. The highest yield (N was 180 kg/hm2, P was 90 kg/hm2, K was 158 kg/hm2 and the planting density was 75 000 plants /hm2) was 2 696.15 kg/hm2 among the 24 treatments. Higher fertilizer application treatments had higher NPK accumulation, which was consistent to the seed yield, and there was highly significant correlation between yield and NPK accumulation. The contents of N and P during flowering and harvesting stages, which were much higher than those during the wintering stage, increased first and then decreased, but the change was not obvious. The K. Content showed less change.关键词
油菜/种植密度/施肥水平/养分吸收/产量Key words
rapeseed/ planting density/ fertilizer application level/ nutrients absorption/ yield分类
农业科技引用本文复制引用
杨勇,刘强,宋海星,官春云,荣湘民,彭建伟..不同种植密度和施肥水平对油菜养分吸收和产量的影响[J].湖南农业大学学报（自然科学版）,2011,37(6):586-591,6.基金项目
国家油菜产业技术体系建设项目(nyctx-00509) （nyctx-00509）
国家"863"计划项目(2006BAD21B03) （2006BAD21B03）
湖南省重大专项(2009FJ1006-1,2009FJ1006-3) （2009FJ1006-1,2009FJ1006-3）
湖南省高校创新平台开放基金项目(09K049) （09K049）
