摘要
以沣油823为油菜供试品种,在浏阳北盛镇土壤有效硼含量0.33和0.51 mg/kg的2片水稻田,设置4.5、9.0和13.5 kg/hm^2 3个硼肥用量梯度,研究油菜种子与专用硼肥混拌直播在不同肥力田块上对油菜出苗、硼积累量、地上部生物量、产量、硼肥利用率的影响。结果表明:不同肥力田块上,硼肥用量在9.0 kg/hm^2时出苗率最高。在土壤有效硼含量为0.33 mg/kg条件下,油菜角果和籽粒生物量、地上部生物总量、收获指数、产量、硼累积量都随硼肥用量的增加而提高,但硼肥利用率成下降趋势。在土壤有效硼含量为0.51 mg/kg条件下,当硼肥用量为9.0 kg/hm^2时,籽粒生物量、收获指数、产量最高。油菜种子混拌专用硼肥直播对油菜生长没有不利影响,建议在浏阳施硼量为9.0~13.5 kg/hm^2。
In order to understand the effect of direct sowing of rapeseeds mixed with boron fertilizer on the seedling emergence,B accumulation,biomass,seed yield and B use efficiency of winter rape,the field trial with 3 application rates of B fertilizer(4.5,9.0,13.5 kg/hm^2)was conducted in Beisheng Town,Liuyang City.The rape cultivar Fengyou 823 and 2 soil polts where the available boron content was originally 0.33mg/kg and 0.51mg/kg,respectively were chosen as the research objects.The results showed that the highest seedling emergence rate was achieved at 9.0kg/hm^2 of B fertilizer application rate both in 2 soil polts.In the soil of 0.33mg/kg available boron content,the biomass of pods,seeds and shoots,harvest index,seed yield and boron accumulation were increased with the increase of B fertilizer application,but the use efficiency of B fertilizer was on a downward trend.In the soil of 0.51mg/kg available boron content,the biomass of seed,harvest index and yield reached the highest at 9.0kg/hm^2 of B fertilizer application rate.There was no negative effect on the growth of rape using the method of direct sowing of rapeseeds mixed with boron fertilizer.It is suggested that the amount of B fertilizer applied in Liuyang region is 9.0-13.5kg/hm^2.
作者
童金花
王杰
张慧颖
黎良平
戴典
江再生
TONG Jin-hua;WANG jie;ZHANG Hui-ying;LI Liang-ping;DAI Dian;JIANG Zai-sheng(Liuyang Agricultural Development Affairs Center,Liuyang 410300,PRC)
出处
《湖南农业科学》
2020年第3期27-30,共4页
Hunan Agricultural Sciences
基金
国家现代农业产业技术体系建设专项(CARS-12)。
关键词
油菜
硼肥
出苗率
硼肥利用率
产量
winter rapeseeds
boron fertilizer
seedling emergence rate
boron fertilizer use efficiency
yield
