华北农学报 ›› 2024, Vol. 39 ›› Issue (2): 126-135. doi: 10.7668/hbnxb.20194736

所属专题: 玉米 土壤肥料

• 资源环境・植物保护 • 上一篇    下一篇

缓释氮肥施用量对玉米抽雄—吐丝期光合特性及干物质积累的影响

孟天天1,2, 刘亚楠1,2, 张向前2,3, 路战远1,2,3, 陈立宇2, 李金龙4, 王伟妮5, 郝永河6   

  1. 1 河北农业大学,河北 保定 071001
    2 内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031
    3 内蒙古自治区退化农田生态修复与污染防治重点实验室,内蒙古 呼和浩特 010031
    4 阿荣旗农业事业发展中心,内蒙古 呼伦贝尔 162750
    5 鄂尔多斯市农牧业生态与资源保护中心,内蒙古 鄂尔多斯 017000
    6 鄂尔多斯市农牧技术推广中心,内蒙古 鄂尔多斯 017000
  • 收稿日期:2023-12-18 出版日期:2024-04-28
  • 通讯作者:
    路战远(1964—),男,内蒙古赤峰人,研究员,博士,主要从事保护性耕作研究。
    路战远(1964—),男,内蒙古赤峰人,研究员,博士,主要从事保护性耕作研究。
  • 作者简介:

    孟天天(1994—),女,内蒙古赤峰人,在读博士,主要从事土壤耕作与农业生态研究。

  • 基金资助:
    内蒙古农牧交错区黑土地保护性耕作关键技术研究与示范(2021GG0064); 内蒙古自治区“科技兴蒙”重点专项-黄河南岸灌区高标准农田灌排协同调控和耕地质量提升关键技术研究与示范(2021EEDSCXSFQZD011); 内蒙古自治区“科技兴蒙”重点专项-黄河南岸灌区高标准农田灌排协同调控和耕地质量提升关键技术研究与示范(2023年内蒙古自治区草原英才科技计划项目); 内蒙古自治区科技领军人才团队项目(2022LJRC0010)

Effects of Slow-release Nitrogen Application Rate on Daily Photosynthetic Characteristics and Dry Matter Accumulation of Maize During Spinning—Tasseling Stage

MENG Tiantian1,2, LIU Yanan1,2, ZHANG Xiangqian2,3, LU Zhanyuan1,2,3, CHEN Liyu2, LI Jinlong4, WANG Weini5, HAO Yonghe6   

  1. 1 Hebei Agricultural University,Baoding 071001,China
    2 Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China
    3 Key Laboratory of Ecological Restoration and Pollution Prevention of Degraded Farmland of Inner Mongolia Autonomous Region,Hohhot 010031,China
    4 Arong Banner Agricultural Development Center,Hulun Buir 162750, China
    5 Erdos City Agriculture and Animal Husbandry Ecology and Resource Protection Center, Ordos 017000, China
    6 Erdos Agricultural and Animal Husbandry Technology Extension Center, Ordos 017000, China
  • Received:2023-12-18 Published:2024-04-28

摘要:

为明晰缓释氮肥不同施用量下玉米光合日变化特征及生长发育规律,利用光响应曲线拟合,以期为农牧交错区春玉米丰产栽培和氮肥高效利用提供理论依据。以广德5号为研究对象,在2018年长期定位试验基础上,于2019,2020年分别测定分析了玉米抽雄—吐丝期穗位叶在N 0(N0,CK),120(N8),180(N12),240 (N16),300(N20),360(N24) kg/hm2 6个氮肥梯度下的SPAD值、胞间二氧化碳浓度、气孔导度、净光合速率、蒸腾速率日变化、光响应曲线及干物质积累规律。2 a结果表明,随着氮肥施用量的增加,玉米穗位叶SPAD值和净光合速率、蒸腾速率、气孔导度日变化呈先增加后降低的趋势,均以N16处理最高,且胞间二氧化碳浓度最低。净光合速率、蒸腾速率、气孔导度日变化均呈单峰曲线变化趋势。光响应曲线拟合分析得出,N16处理的最大净光合速率最高,2019,2020年N16处理分别比N0、N8、N12、N20、N24处理提高37.48%,29.51%,31.85%,18.17%,37.32%和80.04%,59.73%,50.30%,6.42%,62.51%。全株干物质及穗部干物质积累与最大净光合速率、SPAD值呈极显著正相关。综合分析得出,内蒙古西部地区最适宜的氮肥施用量为240 kg/hm2

关键词: 玉米, 光合日变化, 氮肥梯度, 光响应曲线, 抽雄—吐丝期, 干物质量

Abstract:

To clear under the condition of slow release nitrogen fertilizer applying different content of maize development rule of the diurnal change of photosynthetic characteristics and growth,the light response curve was to fit,so as to farming-pastoral zone of spring maize cultivation and nitrogen utilization to provide theoretical basis.This study took Guangde 5 as the research object,and based on the long-term positioning experiment in 2018,the leaves ear position in spinning—tasseling stage of maize were mesured and analyzed under six nitrogen gradient of N 0(N0,CK), 120(N8), 180(N12), 240(N16), 300(N20),360(N24) kg/ha in 2019 and 2020. SPAD value, intercellular carbon dioxide concentration, stomatal conductivity, diurnal variation of net photosynthetic rate, transpiration rate, light response curve and dry matter accumulation rule.The results showed that with the increase of nitrogen fertilizer application, the changes of SPAD value, net photosynthetic rate, transpiration rate and stomatal conduction degree day of maize increased first and then decreased,and N16 treatment was the highest,and intercellular carbon dioxide concentration was the lowest.The changes of net photosynthetic rate,transpiration rate and stomatal conduction degree day showed unimodal curve.The light response curve fitting analysis showed that the maximum net photosynthetic rate of N16 treatment was the highest.In 2019 and 2020,N16 treatments were 37.48%,29.51%,31.85%,18.17%,37.32% and 80.04%,59.73%,50.30%,6.42%,62.51% higher than N0,N8,N12,N20 and N24 treatments,respectively.Dry matter mass accumulation in whole plant and ear were positively correlated with maximum net photosynthetic rate,apparent quantum efficiency and SPAD value.Comprehensive analysis showed that the most suitable nitrogen fertilizer application rate in western Inner Mongolia was 240 kg/ha.

Key words: Maize, Diurnal variation of photosynthesis, Nitrogen gradient, Light response curves, Spinning—Tasseling stage, Mass of dry matter

引用本文

孟天天, 刘亚楠, 张向前, 路战远, 陈立宇, 李金龙, 王伟妮, 郝永河. 缓释氮肥施用量对玉米抽雄—吐丝期光合特性及干物质积累的影响[J]. 华北农学报, 2024, 39(2): 126-135. doi: 10.7668/hbnxb.20194736.

MENG Tiantian, LIU Yanan, ZHANG Xiangqian, LU Zhanyuan, CHEN Liyu, LI Jinlong, WANG Weini, HAO Yonghe. Effects of Slow-release Nitrogen Application Rate on Daily Photosynthetic Characteristics and Dry Matter Accumulation of Maize During Spinning—Tasseling Stage[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(2): 126-135. doi: 10.7668/hbnxb.20194736.