草地学报 ›› 2025, Vol. 33 ›› Issue (5): 1602-1611.DOI: 10.11733/j.issn.1007-0435.2025.05.025

• 研究论文 • 上一篇    下一篇

水氮耦合处理对林下鸭茅草产量与品质及土壤特性的影响

刘晓宇1,2, 毛培春2, 郑明利2, 田小霞2, 郭玉霞1, 孟林2   

  1. 1. 河南农业大学动物科技学院, 河南 郑州 450046;
    2. 北京市农林科学院草业花卉与景观生态研究所, 北京 100097
  • 收稿日期:2024-07-10 修回日期:2024-09-23 出版日期:2025-05-15 发布日期:2025-05-20
  • 通讯作者: 孟林,E-mail:menglin9599@sina.com;郭玉霞,E-mail:yuxiaguo@163.com
  • 作者简介:刘晓宇(1997-),男,汉族,河南信阳人,硕士研究生,主要从事动物营养与饲料科学研究,E-mail:2621763454@qq.com
  • 基金资助:
    国家重点研发计划课题(2022YFD1300804);北京市农林科学院科技创新能力建设专项(KJXC20240505,KJCX20230809);北京市农林科学院农业科技示范推广项目(2022211)资助

Effects of Water and Nitrogen Coupling Treatment on Yield, Quality and Soil Characteristics of Dactylis Glomerata under Forest

LIU Xiao-yu1,2, MAO Pei-chun2, ZHENG Ming-li2, TIAN Xiao-xia2, GUO Yu-xia1, MENG Lin2   

  1. 1. College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, Henan Province 450046, China;
    2. Institute of Grassland, Flowers and Ecology, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
  • Received:2024-07-10 Revised:2024-09-23 Online:2025-05-15 Published:2025-05-20

摘要: 为探究不同水氮耦合处理对林下鸭茅(Dactylis glomerata)产量与营养品质及土壤理化特性的影响,本试验选择2种林地郁闭度(C1=0.3和C2=0.6)的林下鸭茅草地,采用裂区试验设计,主区为水分处理,分别为150 m3·hm-2(W1)、300 m3·hm-2(W2)和450 m3·hm-2(W3),副区为施氮肥处理,分别为0 kg·hm-2(F1)、30kg·hm-2(F2)、60 kg·hm-2(F3)、90 kg·hm-2(F4)和120 kg·hm-2(F5)。结果表明:0.3和0.6林地郁闭度下,灌水量450 m3·hm-2和施氮肥量90kg·hm-2(W3F4)耦合处理鸭茅全年鲜草和干草产量均为最高,其中全年干草产量分别较W1F1提高50.55%和112.44%(P<0.05);第一茬和第二茬干草粗蛋白含量和相对饲喂价值(Relative feeding value,RFV)均较高,其中RFV值为88.17~121.47。而且W3F4处理下0~20cm土壤全磷和全钾含量较W1F1均有显著提高(P<0.05)。综上W3F4耦合处理可提升林下鸭茅草产量和营养品质,对改善0~20cm土壤理化特性具有积极作用。

关键词: 林草复合, 鸭茅, 水氮耦合, 草产量, 营养品质, 土壤特性

Abstract: In order to explore the effects of different water and nitrogen coupling treatments on the yield, nutrient quality and soil physicochemical properties of Orchard grass (Dactylis glomerata) under the forest, the experiment was conducted in two kinds of canopy density (C1=0.3 and C2=0.6) in the shallow mountainous area of Beijing. The split plot design was adopted, the main plot was treated with water, namely 150m3·hm-2 (W1), 300m3·hm-2 (W2) and 450 m3·hm-2 (W3). The secondary plot was treated with nitrogen fertilizer, namely 0kg·hm-2 (F1), 30kg·hm-2 (F2), 60 kg·hm-2 (F3), 90kg·hm-2 (F4) and 120kg·hm-2 (F5). The results showed that under the coupled treatment of 450 m3·hm-2 irrigation and 90 kg·hm-2 nitrogen application (W3F4), the annual fresh grass and hay yield of D. glomerata under 0.3 and 0.6 canopy density were the highest, and among them, the annual dry grass yield was 50.55% and 112.44% higher than that of W1F1P<0.05), respectively. The crude protein content and relative feeding value (RFV) of the first and second cut dry grass under W3F4 treatment were relatively high, with RFV values ranging from 88.17 to 121.47. Moreover compared with W1F1, the average contents of total phosphorus and total potassium of 0-20 cm soil layer under W3F4 treatment were higher (P<0.05). In summary, the W3F4 coupling treatment could improve the yield and nutritional quality of D. glomerata under the forest, and had a positive effect on improving the soil physicochemical properties of 0-20 cm soil layer.

Key words: Forest-grass compound, Dactylis glomerata, Water-nitrogen coupling, Grass yield, Nutritional quality, Soil characteristics

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