北方农业学报 ›› 2021, Vol. 49 ›› Issue (3): 41-47.doi: 10.12190/j.issn.2096-1197.2021.03.06

• 土壤肥料·农业生态环境 • 上一篇    下一篇

控释氮肥对糜子农艺性状及产量的影响

王英1, 武俊英2, 刘景辉1, 冯学颖1   

  1. 1.内蒙古农业大学 农学院,内蒙古 呼和浩特 010019;
    2.内蒙古农业大学 职业技术学院,内蒙古 萨拉齐 014109
  • 收稿日期:2021-04-14 出版日期:2021-06-20 发布日期:2021-08-23
  • 通讯作者: 武俊英(1967—),女,教授,博士,硕士生导师,主要从事农牧交错区农作制与农业生态的研究工作。
  • 作者简介:王 英(1995—),男,硕士研究生,研究方向为农牧交错区农作制与农业生态。
  • 基金资助:
    国家科技支撑计划项目(2015BAD22B04-02)

Effects of controlled-release nitrogen fertilizer on agronomic characteristics and yield of Panicum miliaceum L.

WANG Ying1, WU Junying2, LIU Jinghui1, FENG Xueying1   

  1. 1. College of Agriculture,Inner Mongolia Agricultural University,Hohhot 010019,China;
    2. College of Vocational and Technical,Inner Mongolia Agricultural University,Salaqi 014109,China
  • Received:2021-04-14 Online:2021-06-20 Published:2021-08-23

摘要: 【目的】 明确控释氮肥对黄土高原丘陵区糜子农艺性状及产量的影响。【方法】 采用随机区组试验设计,分析不施肥(T0)、普通尿素(TN)、控释氮肥[T1(N 120 kg/hm2)、T2(N 108 kg/hm2)、T3(N 96 kg/hm2)、T4(N 84 kg/hm2)、T5(N 72 kg/hm2)]处理下糜子株高、茎粗、单株叶面积和产量。【结果】 与TN处理相比,T1处理提高了糜子生育后期株高、茎粗和单株叶面积。随着控释氮肥减量,糜子株高、茎粗和单株叶面积均呈降低趋势。糜子产量与单株叶面积呈极显著正相关,与株高和茎粗显著正相关。施肥可显著提高糜子产量,两年较T0处理增产30.31%~42.92%;随着控释氮肥减量,糜子产量呈下降趋势。【结论】 控释氮肥120 kg/hm2处理一次性基施利于糜子农艺性状及产量的提高,可作为黄土高原丘陵区糜子种植可行的控释氮肥施用量。

关键词: 糜子, 控释氮肥, 株高, 茎粗, 单株叶面积, 产量

Abstract: 【Objective】 To clarify the influence of controlled-release nitrogen fertilizer on the agronomic characteristics and yield of Panicum miliaceum L. in the hilly areas of the Loess Plateau.【Methods】 A randomized block trial design was used to analyze no fertilizer(T0),urea(TN),controlled-release nitrogen fertilizer[T1(N 120 kg/hm2),T2(N 108 kg/hm2),T3(N 96 kg/hm2),T4(N 84 kg/hm2),T5(N 72 kg/hm2)]on the effect of plant height,stem thickness,leaf area per plant and yield of Panicum miliaceum L..【Results】 Compared with the TN treatment,T1 treatment increased the plant height,stem thickness and leaf area per plant in the late growth stage. With the reduction of controlled-release nitrogen fertilizer,the plant height,stem thickness and leaf area per plant of Panicum miliaceum L. all decreased trend. The yield of Panicum miliaceum L. was extremely significantly correlated with leaf area per plant,and significantly correlated with plant height and stem thickness. Fertilization could significantly increase the yield of Panicum miliaceum L. ,which increased by 30.31%-42.92% compared with T0 treatment in two years;with the reduction of controlled-release nitrogen fertilizer,the yield of Panicum miliaceum L. showed a downward trend.【Conclusion】 One-time basal application of controlled-release nitrogen fertilizer with pure nitrogen of 120 kg/hm2 was beneficial to the improvement of agronomic characteristics and yield of Panicum miliaceum L. ,and could be used as a feasible controlled-release nitrogen fertilizer application rate for Panicum miliaceum L. planting in the hilly areas of the Loess Plateau.

Key words: Panicum miliaceum L., Controlled-release nitrogen fertilizer, Plant height, Stem thickness, Leaf area per plant, Yield

中图分类号: 

  • S516