氮素对不同来源大豆品种农艺性状及产量的影响

在田间条件下,以12个不同来源大豆品种为试验材料,采用二因素裂区设计,研究氮素对不同来源大豆品种农艺性状及产量的影响.结果表明:追施氮肥会使大豆品种的株高、分枝数和单株荚数增加.当尿素施用量为100 kg/hm2时,和不施肥相比,3组不同来源大豆品种的主茎节数增加,俄亥俄当代品种与辽宁当代品种结荚高度则会降低.氮肥处理能提高俄亥俄当代品种与辽宁当代品种的粒茎比.当尿素施用量为200 kg/hm2时,和不施肥相比,俄亥俄当代品种与辽宁老品种产量分别增加10.61%和1.63%;当尿素施用量为100 kg/hm2时,和不施肥相比,辽宁当代品种产量会增加10.47%.

Effects of Nitrogen on Agronomic Characteristics and Yield of Soybeans From Different Regions

Twelve soybean cultivars from different regions were used to study the effect of nitrogen fertilizer on agronomic characteristics and yield in field conditions. The results were as follows; The plant height, branches and the pods per plant of soybean cultivar improved in the treatment of nitrogen. The nodes of main stem for three groups soybean cultivars rised in the treatment of 100 kg/hm~2 nitrogen fertilizer. The height of the lowest pod of current Ohio cultivar and current Ohio cultivar reduced in the treatment of 100 kg/hm~2 nitrogen fertilizer. The ratio of seeds to stem for current Ohio cultivar and current Ohio cultivar improved in the treatment of nitrogen fertilizer. The yield increased by 10.61% and 1.63% for current Ohio cultivar and old Liaoning cultivar in the treatment of 200 kg/hm~2 nitrogen fertilizer respectively. The yield increased by 10.47% for current Liaoning cultivar in the treatment of 100 kg/hm~2 nitrogen fertilizer.