华北农学报 ›› 2026, Vol. 41 ›› Issue (2): 111-118. doi: 10.7668/hbnxb.20196035

所属专题: 薯类作物 抗旱节水 栽培生理

• 耕作栽培·生理生化 • 上一篇    下一篇

不同水分梯度对半干旱地区马铃薯生长及光合特性的影响

杨阳1, 赵鸿1, 张凯1, 唐玉瑞1, 鹿文涵2   

  1. 1 中国气象局 兰州干旱气象研究所, 甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室, 甘肃 兰州 730020
    2 宁波市海曙区气象局, 浙江 宁波 315153
  • 收稿日期:2025-11-11 出版日期:2026-04-28
  • 通讯作者:
    赵 鸿(1977—),女,甘肃临洮人,研究员,博士,主要从事农业生态与气候变化研究。
  • 作者简介:

    杨 阳(1992—),女,内蒙古太仆寺旗人,助理研究员,硕士,主要从事农业气象与气候变化研究。

  • 基金资助:
    甘肃省省级生态文明建设重点研发项目(24YFFA052); 甘肃省气象局科技创新人才计划科研项目(2425rczx-D-QNYXRC-04); 干旱气象科学研究基金项目(IAM202405); 2022年度宁波市自然科学基金项目(2022J001)

Effects of Different Water Gradients on Potato Growth and Photosynthetic Characteristics in Semi-arid Areas

YANG Yang1, ZHAO Hong1, ZHANG Kai1, TANG Yurui1, LU Wenhan2   

  1. 1 Institute of Arid Meteorology, CMA,Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province,Key Open Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Lanzhou 730020, China
    2 Haishu District Meteorological Bureau of Ningbo, Ningbo 315153, China
  • Received:2025-11-11 Published:2026-04-28

摘要:

为揭示半干旱区马铃薯在关键生育阶段生长发育及光合特性对不同水分梯度的响应特征,通过开展渍水(土壤含水量保持85%田间持水量)和干旱胁迫(土壤含水量为65%田间持水量时开始持续干旱)的模拟试验,对马铃薯各项生长发育及光合指标进行研究。结果表明,随着生育进程,渍水处理下马铃薯株高、生物量积累与正常灌溉处理相差不大,干旱胁迫下显著降低马铃薯株高生长及生物量的积累,同时干旱胁迫明显降低马铃薯叶片光合特性,其中净光合速率、气孔导度分别下降43%,55%,渍水处理各光合参数(除气孔导度外)与正常灌溉处理无显著差异。干旱胁迫及渍水处理不同程度降低马铃薯叶片的光合能力及对光能的利用,其中渍水条件下马铃薯叶片遇强光时生长发育更易受到抑制,并且降低马铃薯叶片活性,马铃薯叶片在干旱条件下遇弱光时生长发育更易受到抑制,但未降低马铃薯叶片活性。综合分析发现,半干旱区马铃薯在块茎膨大期更易受到干旱胁迫的影响,其次是渍水持续时间较长影响马铃薯的生长发育。

关键词: 马铃薯, 水分胁迫, 光合特性, 半干旱区, 渍水处理

Abstract:

In order to reveal the response characteristics of potato growth,development,and photosynthetic traits to different water gradients during the critical growth period in semi-arid regions,this study conducted simulated experiments involving waterlogging (soil moisture maintained at 85% field capacity)and drought stress (drought initiated when soil moisture reached 65% field capacity)to investigate various growth traits and photosynthetic parameters of potatoes.The results showed that the plant height and biomass accumulation of potatoes under waterlogging were not different from those under normal irrigation.The plant height growth and biomass accumulation of potato under drought stress were significantly decreased.Meanwhile,the photosynthetic characteristics of potato leaves were significantly decreased under drought stress,including a 43% reduction in net photosynthetic rate and a 55% reduction in stomatal conductance.There was no significant difference in photosynthetic characteristics(except for stomatal conductance)between waterlogging treatment and normal irrigation treatment.Drought stress and waterlogging treatment decreased the photosynthetic capacity and light energy utilization of potato leaves to different degrees.Among them,under waterlogging conditions,the growth and development of potato leaves were more easily inhibited when exposed to strong light,and the activity of potato leaves was reduced.The growth and development of potato leaves were more easily inhibited when exposed to weak light under drought conditions,but the activity of potato leaves was not reduced.Comprehensive analysis showed that potato was more susceptible to drought stress in tuber expansion stage in semi-arid region,followed by longer waterlogging duration affecting potato growth and development.

Key words: Potato, Water stress, Photosynthetic characteristic, Semi-arid region, Waterlogging treatment

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引用本文

杨阳, 赵鸿, 张凯, 唐玉瑞, 鹿文涵. 不同水分梯度对半干旱地区马铃薯生长及光合特性的影响[J]. 华北农学报, 2026, 41(2): 111-118. doi: 10.7668/hbnxb.20196035.

YANG Yang, ZHAO Hong, ZHANG Kai, TANG Yurui, LU Wenhan. Effects of Different Water Gradients on Potato Growth and Photosynthetic Characteristics in Semi-arid Areas[J]. Acta Agriculturae Boreali-Sinica, 2026, 41(2): 111-118. doi: 10.7668/hbnxb.20196035.