摘要
通过对杂交油菜与常规油菜不同施N水平的研究表明:杂交油菜比常规油菜具有较大的增产潜力,同等施肥水平下,种植杂交油菜比种植常规油菜经济效益高,亩施纯N7.5kg、12.5kg、17.5kg的杂交油菜比常规油菜平均增产12.2％,亩净产值平均增加18.6元/亩,平均亩净增菜籽13.8kg/亩。增产因素主要表现为单株有效角数增加15.8％,角粒数增加17.5％,根茎粗增加12.1％,主花序长增加11.4％,果长增加8.8％。
The different nitrogen level of hybrid rapeseed and conventional repe-seed was studied.The results showed that hybrid rapeseed was of the larger yield potential than conventional rapeseed. The economic effect of planting hybrid rapeseed was higher than that of conventional rapeseed at the same nitrogen fertilizer level. Average yield increased by 12.2% which the nitrogen fertilizer level was 7.5kg, 12.5kg and 17.5kg per mu. The pure output value average to increase by 18.6 yuan per mu, pure rapeseed by 13.8kg per mu. Factor of increasing yield is mainly pod number per plant, grain number per pod, root diameter, prinary flower head lenth. They increase by 15.8%, 17.5%, 12.1%, 11.4%,8.8% respectively.
出处
《贵州农业科学》
CAS
1992年第6期41-44,共4页
Guizhou Agricultural Sciences
关键词
杂交油菜
油菜
施氮量
经济效益
hybrid rapeseed
cdnventioaal rapeseed
quantity of nitrogen fertilizer dressed
economic effect
