摘要
机条播油菜播期、密度、薹肥施用水平及不同播栽方式对比试验结果表明:(1)机条播油菜可以获得与常规育苗移栽相近的产量,适宜种植密度为30.0×104～37.5×104株/hm2,播种期以9月20日至10月10日为宜,抽薹期适宜施N量为70.5～105.7kg/hm2。(2)与育苗移栽相比,机条播油菜生育期缩短,个体生长量较小,单株角果数较少,但单位面积总结角数相近,每角粒数和千粒重变化不大。(3)机条播油菜降本增效作用明显,成本降低592.5元/hm2,经济效益增加973.5元/hm2。
Experiments were carried out with different sowing dates, sowing densities, fertilize leves at stem elongating stage of the mechanical row-sowing rape and different cultivating methods. Results showed that the rape row-sowed with machine could get similar harvest as the rape with seedling transplanting. The suitable densities were 300 000-375 000 plants/hm^2, suitable sowing date was from 20 September to 10 October, and suitable N application at stem elongating stage was 70.5～105.7kg/hm^2. Compared with seedling transplanting, mechanical row-sowing rape growth period was shorter, yield per plant was lower, pods per plant was less, but it was similar of pods per hectare, seeds per pod and 1000-seed weight. It could save cost and increase benefit. The cost decreased by 592.5Yuan/hm^2, and benefit increased by 973.5Yuan/hm^2.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2004年第1期32-35,共4页
Chinese Journal of Oil Crop Sciences
基金
江苏省农业重点项目(SX2002036)
扬州市重点项目(YZ200070)
关键词
油菜
播种
机械化
栽培技术
产量
生育特性
Rape
Mechanical row-sowing
Growth and development characteristics
Suitable technology
