[1]张健,魏占民,马鑫,等.聚丙烯酰胺对盐渍化土壤氮素的影响[J].水土保持研究,2015,22(04):12-17.
　ZHANG Jian,WEI Zhanmin,MA Xin,et al.Influence of PAM on Nitrogen of Salinized Soil[J].Research of Soil and Water Conservation,2015,22(04):12-17.
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聚丙烯酰胺对盐渍化土壤氮素的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 22 期数: 2015年04期 页码: 12-17 栏目: 出版日期: 2015-08-28
Title:
Influence of PAM on Nitrogen of Salinized Soil
作者:
张健, 魏占民, 马鑫, 白寅祯, 王晓宇
内蒙古农业大学 水利与土木工程建筑学院, 呼和浩特 010018
Author(s):
ZHANG Jian, WEI Zhanmin, MA Xin, BAI Yinzhen, WANG Xiaoyu
College of Water Conservancy and Civil Engineering Construction, Inner Mongolia Agricultural University, Hohhot 010018, China
关键词:
聚丙烯酰胺; 盐渍化土壤; 正交试验; 氮肥利用率
Keywords:
polyacrylamide; soil salinization; orthogonal test; utilization rate of nitrogen
分类号:
S156.4+9;S278
摘要:
为了研究河套地区盐渍化土壤施用聚丙烯酰胺（PAM）后葵花全生育期内土壤氮素的时空变化规律及其利用率，采用正交试验对葵花生育期内0—100 cm土层土壤碱解氮的动态变化规律及氮肥利用率进行分析。结果表明：施用PAM处理的盐渍化土壤在PAM施用层能够保持一定的碱解氮且不易使碱解氮下移，未施PAM的4个灌水处理在不同程度上均下移至40 cm左右，表明施用PAM明显抑制了氮素深层移动效应。通过正交试验处理及SPSS主效应分析选取三因素最优的适用量为：水量1 800 m3/hm2，氮素168 kg/hm2，PAM量为18.75 kg/hm2，并且PAM施用对中度盐渍化土壤氮肥利用率的影响显著。研究结果可为河套灌区盐渍化土壤合理施氮量及施用PAM对氮肥利用率的影响提供理论依据。
Abstract:
In order to study the temporal and spatial changes of nitrogen and its utilization after applying Polyacrylamide(PAM) in soil salinization of area in Hetao during the whole sunflower growth period, we used the orthogonal experiment to analyze the dynamic change rule of alkali hydrolysable nitrogen and utilization rate of nitrogen in 0—100 cm soil depth during the sunflower growth.The results show that application of PAM could keep certain alkali hydrolysable nitrogen and limit the alkaline hydrolysis nitrogen to move downwards in the PAM application layer of the soil salinization, in the 4 irrigation treatments without applying PAM, alkali hydrolyzable nitrogen moved downward to about 40 cm at different degrees, indicating that application of PAM had the obviously restraining effect on nitrogen movement, and controlled nitrogen leaching, prevented soil barren. Through the analysis of the utilization rate of fertilizer and orthogonal experiment and main effect analysis of SPSS, the selected three optimum factor quantities are following:water is 1 800 m3/hm2, nitrogen is 168 kg/hm2, PAM is 18.75 kg/hm2, and application of PAM has the significant influence on utilization rate of nitrogen fertilizer in moderate salinized soil. The research results can provide the theoretical basis for using reasonable amount of nitrogen application and improving the application of PAM on utilization rate of nitrogen in salinization soil of irrigation area of Hetao.

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备注/Memo

收稿日期:2014-11-14;改回日期:2014-12-16。
基金项目:内蒙古自治区水利科技计划项目“PAM对盐渍化土壤水肥保持与作物增产效应研究”（Nsk20）
作者简介:张健(1988-),男,内蒙古赤峰市人,硕士研究生,研究方向:节水灌溉理论与新技术。E-mail:729022319@qq.com
通讯作者:魏占民(1960-),男,河北无极县人,教授,博士生导师,主要从事节水灌溉理论与新技术。E-mail:wei_zhanmin@aliyun.com.cn

更新日期/Last Update: 1900-01-01