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/hm2 nitrogen fertilizer.The height of the lowest pod of current Ohio cultivar and current Ohio cultivar reduced in the treatment of 100 kg/hm2 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/hm2 nitrogen fertilizer respectively.The yield increased by 10.47% for current Liaoning cultivar in the treatment of 100 kg/hm2 nitrogen fertilizer.