施用控释尿素对大豆吸氮量及产量的影响研究

Effect of release-controlled urea application on the N uptake and yield of soybean

试验研究施用控释尿素对大豆吸N量及其产量与品质的影响结果表明 ,控释尿素比普通尿素N肥利用效率提高 3 0 6 %～ 1 1 93% ,沙土中尿素N残留量增加 1 2 5 %～ 1 5 89% ,大豆产量提高 2 1 6 9%～ 4 9 2 2 % ,且改善大豆品质。

The effect of release controlled urea application on the N uptake, yield and quality of soybean is described in this paper. The results show that release controlled urea can increase the N efficiency by 3 06%～11 93%, increase the residual N by 1 25%～15 89% in the sandy soil, it also increases the soybean yield by 21 69%～49 22% and improves the soybean quality.