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以特豆1号、浙春3号和特豆5号为材料,研究了不同氮肥处理对春大豆主要农艺性状、产量及产量构成因素的影响。结果表明:特豆5号在施纯氮90 kg.hm-2时,大豆籽粒氮含量、氮利用率和产量均高于其它处理组合,产量达2 240 kg.hm-2。3个供试品种中,特豆5号是氮高效利用型品种,浙春3号对氮最敏感。施氮水平和品种间具有极显著的互作效应,以A2B3组合(特豆5号施纯氮90 kg.hm-2)产量最高。
The effects of different nitrogenous fertilizer treatments on the main agronomic characters, yield and yield components of spring soybean were studied using the special bean No.1, the third spring Zhengtu5 and the special soybean No.5. The results showed that the nitrogen content, nitrogen utilization rate and yield of soybean were higher than that of other treatment combinations when the pure nitrogen was applied at 90 kg.hm-2, and the yield reached 2 240 kg.hm-2 Among the cultivars, special bean No. 5 is a highly efficient nitrogen-use variety and Zhechun No.3 is the most sensitive to nitrogen. There was a very significant interaction between nitrogen application rates and varieties. The yield of A2B3 was the highest (90 dm.hm-2 of pure bean No.5).