【摘要】 在不同种植方式和种植密度条件下研究了长花序短果枝株型大豆品种沈农6号的生育规律,结果表明,在60 cm和30 cm两种行距种植方式条件下株高、株高增长最快的出现时间和株高增长最大速率均未达到显著差异水平,而株高随种植密度的增大而增高;株高增长最快的出现时间均在出苗后40~50 d;株高增长最大速率有随密度增加而加大的趋势。在两种种植方式条件下,单株生物产量、单株生物产量积累最快的出现时间、单株生物产量积累最大速率均未达到显著差异水平,但单株生物产量均随种植密度的增大而减少;单株生物产量积累最快的出现时间均在出苗后70~77 d;单株生物产量积累最大速率随密度增加而降低,种植密度较低时,降幅较大,种植密度较高时,降幅较小。在两种种植方式条件下单株荚重、单株荚重积累最快的出现时间、单株荚重积累最大速率均未达到显著差异水平,但是单株荚重均随种植密度的增大而减少。单株荚重积累最快的出现时间均在出苗后91~98 d;单株荚重积累最大速率随密度增加而降低。更多还原

【Abstract】 The growth and development dynamics of soybean variety Shennong 6 with long floral axis and short pod branch characteristics were studied under different row spaces and different seeding rates from 1999 to 2000. The results were as followw: This were no significant differences of plant height, time of plant height maximum growth, maximum growth rate of plant height between 60 cm and 30 cm row spaces, however, the plant height were higher as the increase of seeding rate, time of plant height maximum growth appeared in the days of 40 - 50 after emergence, maximum growth rate of plant height were bigger as the increase of seeding rate. This were also no significant differences of biological yield per plant and pod weight per plant between 60 cm and 30 cm row spaces, however, the biological yield and pod weight were smaller as the increase of seeding rate, time of biological yield maximum accumulation appeared in 70-77 d after emergence, time of pod weight maximum accumulation appeared in 91-98 d after emergence, maximum accumulation rates of biological yield and pod weight were smaller as the increase of seeding rate.更多还原