夏大豆群体结构对不同类型品种产量及农艺性状的影响

在南方地区选择不同类型的代表品种，研究不同密度及同密度下不同株行距配置对大豆产量的影响，结果显示：密度与株行距配置显著地影响产量，品种类型不同，其对密度要求不同，主茎结荚型品种密度以３．０万株／亩为宜，而分枝型品种以１．０－１．５万株／亩为宜，相同密度下株行距愈接近，则产量愈高，因而建议均匀种植。文中分析讨论了密度对产量影响的原因，并对结论的应用作了讨论。

EFFECT OF SOYBEAN POPULATION AND SPACE ON YIELD AND OTHER AGRONOMIC TRAITS OF DIFFERENT TYPES OF VARIETY

Effects of various density,row space(RS)and plant space(PS) on soybean yield werestudied by using different types of variety from Southern China. It revealed that density,RSand PS greatly affected yield. Each type of variety had its own suitable density. For varietywith pod setting was on the main stem,the best density was 30000 plants per 0. 1617 ac ormore,whereas variety with branches,the best population ranged from 1 0000 to 15000 plantsper 0. 1647 ac. The closer the RS and PS were,the high the yield was. Thus,planting soybean in even or in square plant space probable can achieve the highest yield.