摘要
【目的】探明水热条件对辣椒生长发育的影响,为合理规划辣椒种植和开展辣椒气象防灾减灾提供科学参考。【方法】以贵州主要辣椒种植品种“辣研1号”为研究对象,于2019年和2020年在贵阳国家一级农业气象试验站开展分期播种试验,根据分期播种创造的不同气候水热条件,运用线性回归方法分析不同水热条件对辣椒各生长阶段生长速率的影响。【结果】温度是辣椒各生长阶段生长速率的主要影响因子,气温升高有利于提高辣椒生长速率,缩短辣椒各生长阶段所需的天数,气温每升高1℃,辣椒苗期、全生育期、营养生长阶段和生殖生长阶段分别缩短1.1 d、10.9 d、1.1 d及6.0 d。降水量和气温对辣椒营养生长和生殖生长阶段的生长速率均有重要影响;大气干燥程度对辣椒营养生长和生殖生长阶段的生长速率的影响不同,其与2个生长阶段生长速率的关系分别呈负相关和正相关,对2个生长阶段的影响率分别为-0.25%和0.16%。【结论】水热条件变化对辣椒生长速率的影响显著,在气候干暖化趋势背景下,辣椒播期适度提前,以及构建合理的种植方式是辣椒种植应对未来气候变化的有效措施。
【Objective】The effects of hydrothermal conditions on the growth and development of pepper were studied to provide the scientific basis for planning cultivation rationally and preventing and reducing meteorological disasters for pepper.【Method】Layan 1,a main pepper cultivar in Guizhou,was sown at different stages by national agricultural meteorological experimental station in Guiyang from 2019 to 2020.Based on the hydrothermal conditions of different climate,linear regression was adopted to analyze the effects of different hydrothermal conditions on the growth rate of pepper at different growth stages.【Result】Temperature was the main factor affecting the growth rate of pepper at different stages.Temperature increment was beneficial to increasing the growth rate and shortening the days of each growth stage.With the increase of 1℃,the seedling stage,whole growth stage,vegetative growth stage and reproductive growth stage shortened 1.1 d,10.9 d,1.1 d and 6.0 d,respectively.Precipitation and temperature had important effect on the growth stage at vegetative growth stage and reproductive growth stage;The atmospheric humidity affected the growth rate at vegetative growth stage and reproductive growth stage of pepper differently,and it correlated with the growth rate at the two stages negatively and positively,respectively,with the effect rate of-0.25%and 0.16%at the two stages.【Conclusion】The variation in hydrothermal conditions affected the growth rate obviously.Under the background of climatic drying-warming trend,appropriate advancing the sowing date and developing reasonable planting patterns of pepper were the effective measures to cope with the future climate change.
作者
于飞
侯双双
何建文
刘宇鹏
陈芳
YU Fei;HOU Shuangshuang;HE Jianwen;LIU Yupeng;CHEN Fang(Guizhou Institute of Mountainous Environment and Climate/Guizhou Key Laboratory of Mountainous Climate and Resources,Guiyang,Guizhou 550002;College of Life Sciences,Guizhou University,Guiyang,Guizhou 550025;Guizhou Pepper Research Institute,Guiyang,Guizhou 550006,China)
出处
《贵州农业科学》
CAS
2023年第10期12-19,共8页
Guizhou Agricultural Sciences
基金
贵州省重点科技计划项目“贵州辣椒品质特征分析与评价体系构建”[黔科合支撑(2022)重点016]
中国气象局创新发展项目“贵州辣椒气象灾害监测评估与预报技术及业务化应用”(CXFZ2021J072)
贵州省重要气象科研业务项目“辣椒农业气象服务关键技术研究及应用”[黔气标合ZY(2020)03]。
关键词
辣椒
分期播种
气象因子
水热条件
生长速率
气候变化
pepper
sowing at different stages
climatic factors
hydrothermal conditions
growth rate
climate change
