摘要
为提高特早熟春大豆的增产潜力。采用四元二次回归正交旋转组合没计，研究了播种期、栽培密度、苗前期追施复合肥、苗后期追施尿素4个主要栽培因子对特早熟春大豆生育期及产量的影响．结果表明：特早熟春大豆全生育期随播种期的推迟而明显缩短，与其他参试因子无显著相关；四因子对产量均有显著影响，其影响大小顺序为密度、播种期、苗前期施复合肥、苗后期施尿素；特早熟春大豆适合高密度、高肥水平下栽培；中等土壤肥力下单产3000kg／hm^2以上的优化农艺模式32个，其主要决策因素的取值范围是：播种期3月25日至4月18．日，种植密度57．3—61．2万株／hm^2，苗前期施复合肥232．5-395．55kg／hm^2，苗后期追施尿素138-209．85kg／hm^2．
The effects of sowing date, planting density, topdressing compound fertilizer at the early seedling stage, topdressing urea at the late seedling stage on the growth duration and yield of special early maturing spring soybean were studied by the design of orthogonal rotational regression combinatorial design. The results showed that： Growth duration of tested soybean variety was significantly shortened with the delay of sowing date, but was not affected by other treated factors. All the tested factors affected the yield significantly, with the order as planting density, sowing date, topdressing compound fertilizer at the early seedling stage, topdressing urea at the late seedling stage. This kind of variety was suitable for cultivation with high density and heavy fertilizer. There were 32 optimized cultivation models tbr obtaining the yield of 3 000 kg/hm^2 under medium fertility, in which the main determinative factors＇ value was as follows： sowing date, March 25^th-April 18^th; planting density, 57.3-61.2× 10^4 plants/hm^2; topdressing compound fertilizer at the early seedling stage, 232.5-395.55 kg/hm^2; topdressing urea at the late seedling stage, 138-209.85 kg/hm^2.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第1期8-11,共4页
Journal of Hunan Agricultural University(Natural Sciences)
基金
湖南农业大学引进人才基金项目(04YJ07)
关键词
栽培因子
正交旋转组合设计
特早熟春大豆
生育期
产量
cultivation factors
orthogonal rotational regression combinatorial design
special early maturing spring soybean
growth duration
yield
