|本期目录/Table of Contents|

[1]郑贝贝,赵威,刘松涛,等.不同新型尿素与普通尿素减氮配施对夏玉米氮利用、产量及土壤氮平衡的影响[J].江苏农业科学,2024,52(2):90-97.
 Zheng Beibei,et al.Effects of reduced nitrogen application of different novel urea and common urea on nitrogen utilization,yield and soil nitrogen balance of summer maize[J].Jiangsu Agricultural Sciences,2024,52(2):90-97.
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不同新型尿素与普通尿素减氮配施对夏玉米氮利用、产量及土壤氮平衡的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第52卷
期数:
2024年第2期
页码:
90-97
栏目:
遗传育种与耕作栽培
出版日期:
2024-02-20

文章信息/Info

Title:
Effects of reduced nitrogen application of different novel urea and common urea on nitrogen utilization,yield and soil nitrogen balance of summer maize
作者:
郑贝贝赵威刘松涛张亚菲
河南农业职业学院农业工程学院,河南中牟 451450
Author(s):
Zheng Beibeiet al
关键词:
氮肥减施新型尿素氮代谢酶硝态氮分布产量氮素利用
Keywords:
-
分类号:
S513.06
DOI:
-
文献标志码:
A
摘要:
以玉农76为试验材料,进行2年(2020年、2021年)田间试验,探索无氮处理(CK)、225 kg/hm2普通尿素处理(CU225,以氮计)、普通尿素减施20%(180 kg/hm2)处理(CU180,以氮计)、减氮基础上普通尿素(180 kg/hm2,以氮计)与控释尿素(CLU)、腐殖酸尿素(FAU)、聚能网尿素(ENU)、海藻酸尿素(SAU)按7 ∶3比例配施对夏玉米干物质累积量、产量、土壤氮养分供应特征及氮利用效率的影响,为夏玉米氮肥减施增效及一次性施肥措施提供依据。结果表明,施用氮肥能显著影响土壤有效氮的供应水平及供应特征,可以促进氮素吸收,提高籽粒产量。普通尿素处理(CU225、CU180)提高了玉米生长前期表层土壤硝态氮(NO-3-N)及铵态氮(NH+4-N)含量,使得该阶段干物质含量、叶面积指数(LAI)较高,同时增加了NO-3-N淋洗量。在生长中后期,土壤NO-3-N、NH+4-N含量迅速下降,因此后期干物质量、LAI及产量较低,氮素利用效率欠佳。与CU225处理相比,CU180处理的氮肥偏生产力(PFPN)、氮肥农学效率(AEN)及氮肥利用率(NUE)显著提高,但产量显著降低。在新型尿素与普通尿素减氮配施处理(CLU、FAU、ENU、SAU)下,生长前期表层土壤的NO-3-N、NH+4-N含量较低,随后逐渐释放,从而延长了氮素的供应周期、减少了 NO-3-N 淋溶,其PFPN、AEN、NUE在2020年、2021年田间试验中分别显著提高1.78%~5.49%、9.05%~27.77%、6.39%~17.08%和0.77%~6.77%、3.97%~34.99%、4.51%~15.34%,整体表现为CLU、ENU处理的值较高。与CU225处理相比,CLU、ENU处理2年平均分别显著增产1.78%、3.07%。综上,新型尿素与普通尿素减氮配施维持并提高了土壤供氮能力,降低了NO-3-N的污染风险,使得氮素养分的释放与玉米养分的吸收相互匹配,从而促进了玉米物质累积,进而提高了玉米产量及氮素利用效率,以控释尿素、聚能网尿素与普通尿素配施处理(CLU、ENU)效果较佳。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2023-07-03
基金课题:河南省科技攻关项目(编号:192102110139);河南农业职业学院科研创新项目(编号:HNACSRHR-2021-02);河南农业职业学院科研创新团队项目(编号:HNACKT-2020-01)。
作者简介:郑贝贝(1986—),女,河南滑县人,硕士,讲师,主要从事农作物栽培与育种研究。E-mail:zhengbeibei2020@163.com。
更新日期/Last Update: 2024-01-20