大豆长花序短果枝株型性状的利用研究 II.不同种植方式和种植密度下长花序短果枝株型品种的生理生态参数  

UTILIZATION OF SOYBEAN GERMPLASM WITH PLANT-TYPE OF LONG FLORAL AXIS AND SHORT POD-BRANCHII.Physiological and ecological parameters of Long Floral Axis and Short pod-branch characteristics under different row spaces and seeding rates

作　　者：谢甫绨[1] 王海英[1] 张惠君[1] 杨艳琴[1] 温学发[1] 陈贵[1] 

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110161

出　　处：《辽宁农业科学》2004年第5期1-5,共5页Liaoning Agricultural Sciences

基　　金：国家自然科学基金 (3 9870 447);教育部;辽宁省骨干教师资助计划的资助

摘　　要：在不同种植方式和种植密度下,测定了长花序短果枝株型品种沈农6号的生理生态参数,结果表明,其最大叶面积指数出现在出苗后77d左右。在60cm和30cm两种行距种植方式下,随着种植密度的增加,最大叶面积指数均会增大,但增大的幅度不一样。在3种种植密度下,60cm行距种植的大豆群体,鼓粒期叶片衰减速率均比30cm行距的小。不同种植方式和种植密度下,叶片生产效率有明显的差异,每生产1kg籽粒需叶面积13.32～27.08m2。随着种植密度的增加,会导致叶片衰老加快,生产效率降低。60cm种植方式下,无论是何种种植密度形成的群体,群体内的温度均较高。30cm行距条件下,群体叶面积较大,荫蔽较好,因此无论何种种植密度形成的群体,其湿度变化幅度较小。在10:00～14:00,60cm行距种植条件下,各种密度形成的群体其湿度均较大。The Physiological and ecological parameters 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 follows:The maximum LAI of population appeared at about 11 weeks after emergence.Under the 60 cm and 30 cm row spaces,as the seeding rate increased the maximum LAI also would increase, but the range of increment was different between two row spaces.Under 3 different seeding rates,as soybeans Planted in 60　cm row space,the leaf area decrease rates at the grain filling stage were slower than those of planted in 30 cm.The leaf productivities were different obviously under different row spaces and seeding rates, the value ranged from 13.32 to 27.08 m^2/kg grain.As the seeding rate increased,the leaf senesced faster,and the productivity became lower.Under 60 cm row space,the temperatures in the canopiesof different seeding rates were higher than those under 30 cm row space. Compared with the air humidity over canopy,the humidities in the canopies of different seeding rates under 30 cm changed smaller than those under 60 cm, but under 60 cm row space,the canopies of different seeding rates had higher humidities from 10 AM to 2 PM.

关 键 词：大豆 长花序 短果枝 生理生态 

分 类 号：S565.101[农业科学—作物学]