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生态学杂志 ›› 2012, Vol. 31 ›› Issue (5): 1117-1122.

• 研究报告 • 上一篇    下一篇

光质对温室甜椒干物质生产和分配指数的影响

杨再强1,2*,赵翔1,苏天星1,周志龙1,朱凯1,彭晓丹1   

  1. 1南京信息工程大学江苏省农业气象重点实验室, 南京 210044; 2南京信息工程大学应用气象学院, 南京 210044)
  • 出版日期:2012-05-10 发布日期:2012-05-10

Effects of light quality on dry matter production and partitioning index of greenhouse sweet pepper.

YANG Zai-qiang1,2**, ZHAO Xiang1, SU Tian-xing1, ZHOU Zhi-long1, ZHU Kai1, PENG Xiao-dan1   

  1. (1Jiangsu Key Laboratory of Agricultural Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China;  2College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China)
  • Online:2012-05-10 Published:2012-05-10

摘要: 为了研究不同光质对甜椒植株干物质生产与分配指数的影响,以甜椒茎有限生长品种“苏椒13号”为试验材料,于2010年计不同种彩色塑料薄膜(红、黄、蓝、绿、紫,白色为对照)试验。结果表明:不同光质处理的甜椒单位面积干物质生产量(Wt)与冠层截获的太阳光合有效辐射日积分(daily photosynthetic active radiation integral,PARi, MJ·m-2)之间的模型为Wt=22.07×e0.0054λPARi;单位面积植株总干重、果实的干物质分配指数、果实采收指数和单位面积果实产量均以红膜最高,紫膜最低;蓝膜的茎干物质分配指数最高,红膜最低;蓝膜、绿膜和紫膜的植株叶片干物质分配指数明显高于红膜和黄膜;不同光质处理对甜椒植株地上部分干物质分配指数的影响差异不显著;研究认为红膜和黄膜能够促进甜椒植株的干物质积累和果实发育,紫膜和蓝膜则有明显的抑制作用,该研究结果可为温室甜椒栽培的光质选择和环境调控提供决策依据。

关键词: DNDC模型, 温室气体排放, 气候变化

Abstract: Taking sweet pepper cultivar Shujiao 13 as test material, a greenhouse experiment with different color (white, red, yellow, blue, green, and purple) plastic films was conducted in 2010 to study the effects of light quality on the cultivar’s dry matter formation and its partitioning. In all treatments, the correlation between the dry matter production per unit area (Wt) and the daily photosynthetic active radiation integral intercepted by plant canopy (PARi, MJ·m-2) was accorded with exponential function Wt=22.07×e0.0054λPARi. The plant total dry weight per unit area, fruit dry matter partitioning index (DMPI), fruit harvest index (HI), and fruit yield per unit area were the highest under red film but the lowest under purple film, the stem DMPI was the highest under blue film but the lowest under red film, the leaf DMPI was obviously higher under blue, green, and purple films than under red and yellow films, whereas the shoot DMPI had no significant difference among the treatments. It was considered that red and yellow films could promote the dry matter accumulation and fruit growth, while purple and blue films had obvious inhibitory effects. This study could provide a decision-making support for the light quality selection and environment optimization for the sweet pepper cultivation in greenhouse.

Key words: DNDC model, greenhouse gas emission, climate change.