山东农业大学学报（自然科学版）2025，Vol.56Issue(2)：362-372,11.DOI:10.3969/j.issn.1000-2324.2025.02.020
综合氮肥管理技术对旱地小麦土壤水氮分布及根系生长的优化研究
Optimization of Soil Water and Nitrogen Distribution and Root Growth of Dryland Wheat by Comprehensive Nitrogen Fertilizer Management Technology
摘要
Abstract
A comprehensive nitrogen fertilizer management technology has been proposed to address the limitation of existing wheat nitrogen fertilizer management techniques that focus too much on optimizing single nitrogen application and neglect the synergistic effects of water and nitrogen.Firstly,the optimization of nitrogen fertilizer dosage is combined with farming methods,cultivation techniques,mulching and other agricultural measures to focus on the rational application of nitrogen fertilizer.At the same time,crop yield and nitrogen fertilizer utilization efficiency are enhanced through agronomic measures.Two treatment groups are set up in the experiment,including Group A with traditional mulch cultivation and Group B with optimized fertilizer application in mulch cultivation.The results show that the average water storage in Group A and Group B is 147 mm and 155 mm at 0 d after flowering,and the increase in Group B is significantly higher than that in Group A.The water-N contents in the 0～10 cm and 10～20 cm soil layers in the furrow are 27 kg N/hm2 and 15 kg N/hm2,25 kg N/hm2 and 13 kg N/hm2 for groups A and B respectively.The root weight density of group B is increased by 32.3%in the wheat rows and 8.2%on the ridges.At 0 d after anthesis,Group B shows a 45%increase in root surface area density in the wheat rows and a 327%increase in the 10～20 cm soil layer on the ridges respectively.Therefore,the method proposed by the research can effectively improve the distribution of soil water and nitrogen in wheat rows,exert a positive effect on the root growth of wheat,and provide guidance for practical wheat production management.关键词
小麦/氮肥管理技术/土壤/根系生长/作物氮肥利用率Key words
Wheat/Nitrogen fertilizer management techniques/Soil/Root growth/Crop nitrogen fertilizer utilization分类
农业科学引用本文复制引用
秦立新..综合氮肥管理技术对旱地小麦土壤水氮分布及根系生长的优化研究[J].山东农业大学学报（自然科学版）,2025,56(2):362-372,11.基金项目
山东省教育厅科技计划项目(G09LG24128) （G09LG24128）
