• ISSN 1008-505X
  • CN 11-3996/S
袁亮, 赵秉强, 林治安, 温延臣, 李燕婷. 增值尿素对小麦产量、氮肥利用率及肥料氮在土壤剖面中分布的影响[J]. 植物营养与肥料学报, 2014, 20(3): 620-628. DOI: 10.11674/zwyf.2014.0313
引用本文: 袁亮, 赵秉强, 林治安, 温延臣, 李燕婷. 增值尿素对小麦产量、氮肥利用率及肥料氮在土壤剖面中分布的影响[J]. 植物营养与肥料学报, 2014, 20(3): 620-628. DOI: 10.11674/zwyf.2014.0313
YUAN Liang, ZHAO Bing-qiang, LIN Zhi-an, WEN Yan-chen, LI Yan-ting. Effects of value-added urea on wheat yield and N use efficiency and the distribution of residual N in soil profiles[J]. Journal of Plant Nutrition and Fertilizers, 2014, 20(3): 620-628. DOI: 10.11674/zwyf.2014.0313
Citation: YUAN Liang, ZHAO Bing-qiang, LIN Zhi-an, WEN Yan-chen, LI Yan-ting. Effects of value-added urea on wheat yield and N use efficiency and the distribution of residual N in soil profiles[J]. Journal of Plant Nutrition and Fertilizers, 2014, 20(3): 620-628. DOI: 10.11674/zwyf.2014.0313

增值尿素对小麦产量、氮肥利用率及肥料氮在土壤剖面中分布的影响

Effects of value-added urea on wheat yield and N use efficiency and the distribution of residual N in soil profiles

  • 摘要: 本研究利用同位素15N尿素,采用尿素熔融工艺分别制备了普通尿素(U)、 海藻酸增值尿素(AU)、 腐植酸增值尿素(HAU)和谷氨酸增值尿素(GU)试验产品,运用土柱栽培试验研究等氮量条件下(N 0.1 g/kg 干土,以030 cm土层干土重量计算)3种增值尿素产品对小麦产量、 氮肥利用率和肥料氮在土壤剖面中分布的影响。主要结果, 1)与U相比,AU、 HAU和GU处理均可显著提高小麦籽粒产量,增加幅度分别为7.12%、 13.63%和3.65%; 2)小麦吸收的氮素中有44.8%~48.0%来自肥料氮,AU、 HAU、 GU处理的小麦地上部吸收的肥料氮量均显著高于U处理,分别高出4.83%、 7.41% 和 3.12%; 3)虽然所有处理土壤残留的肥料氮均主要集中在050 cm土层中,U处理在5090 cm层次土壤肥料氮累积量显著高于AU和HAU处理; 4)AU、 HAU和GU处理的小麦氮肥表观利用率分别较U处理显著提高6.38、 15.63、 3.08个百分点,HAU和AU处理的15N利用率分别较普通尿素高出3.70和2.41个百分点,AU、 HAU和GU处理的肥料氮的损失率分别比普通尿素显著降低7.64、 9.52和2.19个百分点。

     

    Abstract: In this study, three kinds of value-added urea containing a certain ratio of: alginic acid, humic aicd (HAU) and glutamic acid (GU), were prepared with isotope15N urea using the urea melt technology. Pot experiments were conducted under the same N application rate (N 0.1 g/kg dry soil by the soil weight of 0-30 cm soil layer) to investigate the effects of value-added urea on wheat yields, N use efficiencies and the distributions of fertilizer N in soil profiles. The results show that: 1) Compared with urea (U), the grain yield of wheat applied with alginic acid urea (AU), humic acid urea (HAU) and glutamic acid urea (GU) are increased by 7.12%, 13.63% and 3.65% respectively. 2) The percentage of fertilizer N contribution in the total wheat N uptake ranges from 44.8%-48.0%, the percentages with AU, HAU and GU are 4.83%, 7.41% and 3.12% significantly higher than that with U. 3) The residual fertilizer N is mainly centralized in 0-50 cm soil layer with all the treatments, but the residual amounts from U treatment is significantly higher than those from AU and HAU treatments in 50-90 cm soil layer. 4) The percentages of fertilizer N apparent recoveries from AU, HAU and GU are 6.38, 15.63 and 3.08 higher than that of the U treatment. The 15N recoveries of HAU and AU are significantly higher than that of the U treatment with increased percentage points of 3.70 and 2.41, respectively. As a result, the fertilizer nitrogen loss rates of AU, HAU and GU are significantly lower than that of the U treatment with decrease of 7.64, 9.52 and 2.19 percentage points, respectively.

     

/

返回文章
返回