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林业科学 ›› 2025, Vol. 61 ›› Issue (10): 135-145.doi: 10.11707/j.1001-7488.LYKX20240656

• 研究论文 • 上一篇    

北方沙地杨树人工林对常规与滴灌施肥的响应

郭江涛1,彭晶晶2,马鑫2,刘帆2,夏永秀2,*()   

  1. 1. 河北农业大学林学院 保定 071000
    2. 中国林业科学研究院华北林业实验中心 北京 102300
  • 收稿日期:2024-11-05 出版日期:2025-10-25 发布日期:2025-11-05
  • 通讯作者: 夏永秀 E-mail:qjdhtynite@163.com
  • 基金资助:
    十四五”国家重点研发计划揭榜挂帅项目(2021YFD2201200);国家自然科学基金青年科学基金项目(32101553)。

Responses of Poplar Plantations in Northern China Sandy Land to Conventional Fertilization and Drip Fertigation

Jiangtao Guo1,Jingjing Peng2,Xin Ma2,Fan Liu2,Yongxiu Xia2,*()   

  1. 1. College of Forestry, Hebei Agricultural University Baoding 071000
    2. Experimental Center of Forestry in North China, Chinese Academy of Forestry Beijing 102300
  • Received:2024-11-05 Online:2025-10-25 Published:2025-11-05
  • Contact: Yongxiu Xia E-mail:qjdhtynite@163.com

摘要:

目的: 针对北方沙地杨树大径材人工林综合地力差、生产力低下等问题,通过常规施肥与滴灌施肥方式,解析杨树人工林对不同水肥条件的响应机制,为研制合理的促进林木生长和地力可持续维护措施提供理论依据和技术指导。方法: 以北方沙地11~12年生欧美杨人工林为研究对象,采用裂区试验设计, 灌溉方式为主因素,设常规灌溉和滴灌2个水平,不同追肥种类为副因素,设不施肥、控释肥、水溶肥、有机粪肥、控释肥配施有机粪肥和水溶肥配施有机粪肥(6个水平,共计12个处理)。连续处理2年后,测定杨树胸径变化、土壤理化性质与土壤酶活性。结果: 在相同施肥条件下,滴灌比常规灌溉更能促进杨树人工林胸径生长。不同肥料类型及其组合对杨树胸径生长和土壤地力有不同效应,其中滴灌条件下单施有机粪肥处理或水溶肥结合有机粪肥处理的效果最佳,而控释肥配合有机粪肥处理的效果最差。施入有机粪肥处理能够提高土壤碱性磷酸酶活性,提高土壤有效磷含量,维持土壤有机质稳定,既能促进胸径增长,又能很好地维护土壤地力。结论: 在北方沙地杨树人工林中,滴灌条件下有机粪肥或水溶肥配合有机粪肥处理促进胸径增长的效果最佳,能提高土壤养分有效性,维持地力,因此建议采用有机粪肥作为基肥,滴灌施肥方式施入水溶肥作为追肥对该地区杨树人工林进行水肥管理。

关键词: 杨树, 施肥, 灌溉, 胸径生长, 土壤理化性质, 土壤酶活性

Abstract:

Objective: In order to solve the problems of poor comprehensive soil fertility and low productivity of large-diameter poplar plantations in northern sandy areas, this study analyzed the response mechanism of poplar plantations to different water and fertilizer conditions through conventional fertilization and drip fertigation methods. This study aims to provide theoretical basis and technical guidance for developing reasonable measures to promote forest growth and sustainably maintaining soil fertility. Method: In this paper, 11–12-year-old Populus × euramericana cv. 74/76 plantation on northern sandy soil was studied using a split-plot experimental design. The irrigation form was the main factor with two levels, conventional irrigation (CI) and drip irrigation (DI). Different types of fertilizing were the sub-factors, with six levels of no fertilization (F0M0), controlled-release fertilizer (FcM0), water-soluble fertilizer (FNPKM0), organic manure (F0M1), controlled-release fertilizer and organic manure (FcM1), water-soluble fertilizer and organic manure (FNPKM1), (a total of 12 treatments). After continuous treatments for 2 years, the changes in diameter at breast height (DBH), as well as the physicochemical properties and enzyme activity of the soil were measured. Result: Drip irrigation was more effective in promoting the DBH growth of poplar plantations than conventional irrigation under the same fertilization conditions. Different types of fertilizers and their combinations had varied effects on poplar DBH growth and soil fertility. Among them, under drip irrigation conditions, organic manure alone or combination of water-soluble fertilizer with organic manure had the best effect, while the controlled-release fertilizer in combination with organic manure had the worst effect. The application of organic manure was able to enhance soil alkaline phosphatase activity, increase soil available phosphorus content, maintain soil organic matter stability, promote breast height diameter growth, and effectively maintain soil fertility. Conclusion: In the poplar plantations on northern sandy soil, the application of organic manure or water-soluble fertilizer combined with organic manure has the best effect on promoting the DBH growth, improving soil nutrient availability, and maintaining soil fertility. Therefore, it is recommended to use organic manure as the base fertilizer and drip irrigation with water-soluble fertilizer as topdressing for water and fertilizer management of the poplar plantations in this area.

Key words: poplar, fertilization, irrigation, DBH growth, soil physical and chemical properties, soil enzyme activity

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