期刊论文

High-yidding cultivation of spring soybean Xiangchundou 25 planted in Autumn

中文

湖南农业大学学报(自然科学版)

1007-1032

2007

33

5

530-534

2001AA241062:国家高技术研究发展计划（863计划） 04YJ07:教学改革项目

本校为第一机构

为提高特早熟春大豆湘春豆25号的秋播增产潜力,采用三元二次回归正交旋转组合设计,研究了种植密度、苗前期施复合肥、苗后期施尿素等3个主要栽培因子对湘春豆25号秋播产量的影响.结果表明:种植密度(x1)、苗前期施复合肥(x2)两因子对产量有显著影响,苗后期施尿素(x3)主效不显著,与x1,x2互作显著;湘春豆25号翻秋种植适合高密度、高肥力水平下栽培;中等肥力土壤上栽培,产量2 400 kg/hm2以上的优化农艺模式有39个,其主要决策因素取值范围:种植密度57.58～61.51万株/hm2,苗前期施复合肥316.8～427.65 kg/hm2,苗后期施尿素202.44～284.34 kg/hm2.

In order to enhance the yield potential of spring soybean varieties planted in Autumn, the effects of planting density, topdressing compound fertilizer at the early seedling stage, topdressing urea alone at the late seedling stage on the yield of special early maturing spring soybean were studied by the design of orthogonal rotational regression combinatorial design. The result showed that： both planting density（xl） and the amount of topdressing compound fertilizer at the early seedling stage（x2） affected the yield significantly, topdressi...