油菜绿肥适宜播量与播期研究

Study on the suitable sowing rate and sowing date of rape green manure

为构建绿肥油菜生产技术模式、还田技术规范,研究在同等栽培管理条件下,对5个不同播量和播期进行比较试验。结果表明,不同播量和不同播期处理油菜鲜草重和干草重均存在一定差异,播量0.9kg/hm^(2)处理和播期10月15日处理地上部鲜重和干重均为最高,其次为播量1.2 kg/hm^(2)处理和播期11月1日处理,故该地区最适宜播种量为0.9~1.2 kg/hm^(2),适宜播种期为10月15日至11月1日。

In order to construct the technical model of green manure rapeseed production,technical specifications for returning to the field.In this study,under the same cultivation and management conditions,through comparative experiments of 5 different sowing rates and 5 different sowing dates.It was found that the fresh and hay weights of rapeseed were different between different sowing rates and different sowing dates.The fresh weight and dry weight of the shoots were the highest in the 0.9 kg/hm^(2)treatment and the sowing date on October 15th,followed by the sowing rate of 1.2 kg/hm^(2)and the sowing date on November 1,so the most suitable sowing rate in this area is 0.9~1.2 kg/hm^(2),the suitable sowing period is from October 15th to November 1st.