|本期目录/Table of Contents|

[1]尚辉.化肥减量对玉米农田土壤氮分布及作物氮吸收的影响[J].江苏农业科学,2018,46(20):66-69.
 Shang Hui.Impacts of chemical fertilizer reduction on soil nitrogen distribution and crop nitrogen absorption in maize farmland[J].Jiangsu Agricultural Sciences,2018,46(20):66-69.
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化肥减量对玉米农田土壤氮分布及作物氮吸收的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第46卷
期数:
2018年第20期
页码:
66-69
栏目:
遗传育种与耕作栽培
出版日期:
2018-10-20

文章信息/Info

Title:
Impacts of chemical fertilizer reduction on soil nitrogen distribution and crop nitrogen absorption in maize farmland
作者:
尚辉
江苏省沿海开发(东台)有限公司,江苏东台 224200
Author(s):
Shang Hui
关键词:
化肥减量玉米土壤氮分布作物氮吸收可行性
Keywords:
-
分类号:
S147.22;S513.06
DOI:
-
文献标志码:
A
摘要:
通过田间试验探究了不同施肥水平[正常氮磷肥(NP)、70%的氮磷肥(70%NP)、50%的氮磷肥(50%NP)、30%的氮磷肥(30%NP)、不施肥(NF)]对玉米根、茎、叶的氮含量,农田100 cm土壤全氮含量及玉米产量的影响。结果表明,随施肥量减少,玉米产量明显降低。在50%NP、30%NP、NF处理下,玉米产量显著低于正常施肥水平,而70%NP(9.47 t/hm2)与NP(9.71 t/hm2)处理差异不显著。可见,化肥减量下玉米根、茎、叶氮含量明显降低。土壤氮含量随土层深度增加逐渐降低,玉米整个生育期深层土壤氮含量变化不大。相关分析表明,玉米产量与灌浆期玉米根、茎、叶的氮含量呈显著或极显著正相关,与苗期、拔节期0~20 cm土壤氮含量呈显著正相关,而与成熟期的0~20 cm土壤氮含量呈现一定程度的负相关,因此合理、适时地减少化肥施用量具有一定经济、生态意义和现实可行性。
Abstract:
-

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-02-21
基金项目:宁夏科技支撑计划(编号:2014ZDN0103)。
作者简介:尚辉(1984—),男,安徽蚌埠人,硕士,主要从事农业生态学、盐碱地改良工作。E-mail:642254995@qq.com。
更新日期/Last Update: 2018-10-20