Effects of Combination of Water-Retaining Agent and Nitrogen Fertilizer on Soil Characteristics and Growth of Winter Wheat under Subsoiling Tillage in South Loess Plateau of China

Author:

Wang Hanbo12ORCID,Huo Qiuyan3,Wang Tieqiang1,Lv Guohua3ORCID,Li Weidong4,Ren Jiameng5,Zhang Shuantang1,Li Jiusheng2ORCID

Affiliation:

1. Hebei Institute of Water Science, Hebei Technology Innovation Center of Agricultural Water Saving, Shijiazhuang 050051, China

2. Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, China

3. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China

4. Hebei Yellow River Diversion Project Affairs Center, Shijiazhuang 050035, China

5. School of Hydraulic Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Abstract

This study was carried out to evaluate the effects of the combined application of water-retaining agents and nitrogen fertilizers on soil physicochemical properties, bacterial communities, and root growth under winter wheat planting mode in the Guanzhong area of Shaanxi Province. Based on the positioning experiment of dry farming in the loessal soil area of Shaanxi Province, four treatments were set up by using the tillage method of subsoiling + rotary tillage and straw returning: only fertilization (U), only water retention agent sodium polyacrylate (C3H3NaO2)n (S), combined use of water-retaining agent sodium polyacrylate (C3H3NaO2)n and fertilizer (US), and control group CK (no treatment). The ultra-high-throughput sequencing of 16S rRNA genes of soil bacteria was performed by the Illumina Hiseq platform, and the effects of different tillage measures on soil bacterial diversity and community structure were analyzed. In addition, the effects of these tillage measures on soil physicochemical properties and winter wheat root length density at booting and flowering stages were evaluated. The results indicated that the combination of the water-retaining agent and fertilizer markedly enhanced the contents of ammonium nitrogen, available phosphorus, and available potassium in the 0~20 cm soil layer, significantly increased the soil moisture content, and promoted the deep growth of roots. The root length density was 4.70 times higher than that of the control group at the booting stage. In addition, the combined application alleviated the decrease in soil microbial diversity caused by individual fertilization, especially significantly increasing the abundance of Gemmatimonadetes, Acidobacteria, and Planctomycetes in the 0~10 cm soil layer. This study reveals the potential of the combined use of water retention agents and fertilizers to optimize the soil environment and enhance winter wheat yield, which provides a scientific basis for improving local agricultural practices.

Funder

National Key R&D Program of China

Special Fund for Agro-Scientific Research in the Public Interest

Hebei Provincial Water Resources Science and Technology Plan Project

Publisher

MDPI AG

Reference54 articles.

1. Application and yield-increasing effect of trace element fertilizer in loess area;Peng;Sci. Agric. Sin.,1978

2. Effect of long-term shallow tillage and straw returning on soil potassium content and stratification ratio in winter wheat-summer maize rotation system in Guanzhong Plain, Northwest China;Shi;Chin. J. Appl. Ecol.,2015

3. Using hydrophilic polymers to control nutrient release;Mikkelsen;Fertil. Res.,1994

4. Discussion on Models of Rain-fed Dry-land High-yield Cultivation Techniques in North Part of China;Dong;Sci-Tech Inf. Dev. Econ.,2011

5. Soil Plough Layers and Soil Nutrients in Western Liaoning;Bai;Soils,2011

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3