|本期目录/Table of Contents|

[1]窦超银,郭海瑞,孟维忠,等.大棚黄瓜滴灌水肥一体化土壤硝态氮分布特征[J].江苏农业科学,2020,48(06):110-116.
 Dou Chaoyin,et al.Spatial distribution characteristics of nitrate nitrogen in greenhouse soil integrated with water and fertilizer under drip irrigation of cucumber[J].Jiangsu Agricultural Sciences,2020,48(06):110-116.
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大棚黄瓜滴灌水肥一体化土壤硝态氮分布特征(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第48卷
期数:
2020年第06期
页码:
110-116
栏目:
园艺与林学
出版日期:
2020-04-08

文章信息/Info

Title:
Spatial distribution characteristics of nitrate nitrogen in greenhouse soil integrated with water and fertilizer under drip irrigation of cucumber
作者:
窦超银1 郭海瑞1 孟维忠2 陈伟2 延玮辰2
1.扬州大学水利科学与工程学院,江苏扬州 225009; 2.辽宁省水利水电科学研究院,辽宁沈阳 110003
Author(s):
Dou Chaoyinet al
关键词:
灌溉下限施氮量施钾量随水施肥硝态氮分布
Keywords:
-
分类号:
S275.6;S642.206;S642.207
DOI:
-
文献标志码:
A
摘要:
为探究滴灌水肥一体化条件下土壤硝态氮的空间分布特征,以大棚黄瓜为对象,采用正交试验设计方法,研究不同灌溉下限(田间持水率的65%、75%、85%,分别记为W1、W2、W3)、施氮量(产量理论需氮量的70%、100%、130%,分别记为N1、N2、N3)和施钾量(产量理论需钾量的70%、100%、130%,分别记为K1、K2、K3)对硝态氮分布和含量的影响。结果表明,滴灌水肥一体化灌溉滴头正下方存在低土壤NO-3-N含量区域,NO-3-N在垄坡和垄沟区域累积,并有明显的表聚特征。随着灌溉下限的增大,土壤剖面NO-3-N含量有先增大后减小的趋势;灌溉下限越低,滴头附近NO-3-N含量越小,灌溉下限越高,NO-3-N越集中于中下层土壤。土壤剖面NO-3-N含量随施氮量增加而增大,水平和垂直方向各点NO-3-N含量均会增加,高施氮量提高硝态氮含量更为明显。土壤剖面NO-3-N含量随着施钾量的增加而增大,在水平方向上,NO-3-N含量的增加主要在15 cm以外,而垂直方向主要在0~20 cm土层。试验3因素对土壤剖面NO-3-N含量的影响表现为施氮量>施钾量>灌溉下限,N3K3W2组合条件下土壤剖面NO-3-N含量最高。
Abstract:
-

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2019-02-28
基金项目:国家自然科学基金青年科学基金(编号:51609208);辽宁省科技攻关计划课题(编号:2015103030)。
作者简介:窦超银(1982—),男,江苏如皋人,博士,高级工程师,主要从事节水灌溉原理与技术研究。E-mail:chydou@163.com。
更新日期/Last Update: 2020-03-20