花后弱光逆境对弱筋小麦产量构成因素和籽粒品质影响的模拟模型

doi:10.3864/j.issn.0578-1752.2013.21.003

中国农业科学 ›› 2013, Vol. 46 ›› Issue (21): 4416-4426.doi: 10.3864/j.issn.0578-1752.2013.21.003

• 专题：气候变化对中国若干作物和动物生产的影响 • 上一篇下一篇

花后弱光逆境对弱筋小麦产量构成因素和籽粒品质影响的模拟模型

顾蕴倩1, 刘雪1, 张巍1, 亓春杰1, 汤开磊1, 赵杨1, 张岩1, 李刚1, 王斌1, 赵春江2, 周剑敏3, 罗卫红1

1.南京农业大学农学院，南京 210095
2.国家农业信息化工程技术研究中心，北京 100089
3.南京财经大学江苏省粮油品质控制及深加工技术重点实验室，南京 210046

收稿日期:2013-05-22 出版日期:2013-11-01 发布日期:2013-07-11
通讯作者: 通信作者罗卫红，Tel：025-84399100；E-mail：lwh@njau.edu.cn
作者简介:顾蕴倩，E-mail：2009201021@njau.edu.cn。
基金资助:
国家公益性行业（农业）科研专项经费项目（200903003，200803037）、江苏省自然科学基金（BK2011638）、教育部博士学科点专项科研基金（20090097120018）联系方式：

Quantifying the Effects of Low Level of Radiation After Anthesis on Yield Components and Grain Quality of Weak Gluten Wheat

GU Yun-Qian-1, LIU Xue-1, ZHANG Wei-1, QI Chun-Jie-1, TANG Kai-Lei-1, ZHAO Yang-1, ZHANG Yan-1, LI Gang-1, WANG Bin-1, ZHAO Chun-Jiang-2, ZHOU Jian-Min-3, LUO Wei-Hong-1

1.College of Agriculture, Nanjing Agricultural University, Nanjing 210095
2.National Engineering Research Center for Information Technology in Agriculture, Beijing 100089
3.Jiangsu Province Key Laboratory of Grain and Oil Quality Control and Deep Processing, Nanjing University of Finance and Economics, Nanjing 210046

Received:2013-05-22 Online:2013-11-01 Published:2013-07-11

摘要/Abstract

摘要： 【目的】建立花后弱光逆境对弱筋小麦产量构成因素和籽粒品质影响的模拟模型，为弱光天气事件对优质弱筋小麦生产的灾损评估提供模型工具。【方法】以弱筋小麦品种扬麦15号为试材，通过设定花后3个光照强度（光照强度分别为自然光强的50%、34%和16%）和4个弱光持续时间（2 d、4 d、6 d和8 d）的遮阴处理试验，模拟连阴雨天气诱发的弱光逆境对弱筋小麦产量构成因素和籽粒品质的影响。在定量分析弱光逆境对弱筋小麦产量构成因素和氮素累积影响的基础上，确定其与籽粒品质指标的函数关系，将这些函数关系与笔者前期建立的弱光对小麦干物质生产影响模拟模型相结合，建立花后弱光逆境对弱筋小麦产量构成因素和籽粒品质影响的模拟模型，并使用独立试验数据对模型进行检验。【结果】确定了花后对弱筋小麦每穗结实粒数和籽粒氮含量产生显著影响的临界弱光阈值和持续时间。模型检验结果表明，模型对每穗结实粒数、千粒重、籽粒容重、面粉降落数值、籽粒粗蛋白含量和面粉湿面筋含量的模拟值与实测值基于1﹕1线的决定系数（R2）分别为0.89、0.75、0.72、0.73、0.93、0.84，相对均方根差（rRMSE）分别为2.86%、3.41%、1.01%、2.50%、2.64%、5.05%。【结论】本研究建立的模型能够较为准确地模拟花后不同强度和持续时间弱光逆境对弱筋小麦产量构成因素和籽粒品质的影响，模型的建立为评估全球气候变化背景下弱光天气事件对优质弱筋小麦生产的不利影响提供了模型工具。

关键词: 弱筋小麦 , 弱光逆境 , 产量构成因素 , 籽粒品质 , 模拟模型

Abstract: 【Objective】The objective of this study is to develop a model for predicting the effects of low level of radiation on yield components and grain quality of wheat so as to quantitatively assess the impacts of low level of radiation on wheat crop production.【Method】Field experiments with weak gluten winter wheat (Triticum aestivum L. cv Yangmai 15) were conducted during three growing seasons. Shading treatments with three levels of radiation intensity (50%, 34% and 16% of natural radiation) and four durations (2 d, 4 d, 6 d and 8 d) after anthesis in the three growing seasons were designed to simulate the low level of radiation caused by cloudy or rainy weather conditions. Based on the experimental data, the impacts of low level of radiation on yield components and grain nitrogen accumulation, and their relations with grain quality traits were quantitatively analyzed and the corresponding functions were determined. These functions were then integrated into the simulation model of wheat crop biomass production and under low levels of radiation weather conditions developed in a previous study, to develop a dynamic model for predicting the effects of low level of radiation after anthesis on the yield components and grain quality of weak gluten wheat. Independent experimental data were used to validate the model.【Result】The critical daily total photosynthetically active radiation (PAR) and duration were determined for keeping normal levels of grain number per spike and grain nitrogen content based on the experimental data. Model validation results showed that the determination coefficient (R2) between the predicted and measured values of grain number per spike, thousand grain weight, test weight, falling number, protein content and wet gluten content were 0.89, 0.75, 0.72, 0.73, 0.93 and 0.84, respectively, and the corresponding relative root mean squared errors (rRMSE) were 2.86%, 3.41%, 1.01%, 2.50%, 2.64% and 5.05%, respectively.【Conclusion】The model developed in this study gave satisfactory predictions of the effects of low level of radiation after anthesis on yield components and grain quality of weak gluten wheat, hence, can be used for assessing the impacts of low level of radiation caused by cloudy or rainy weather conditions on weak gluten wheat production.

Key words: weak gluten wheat , low level of radiation , yield components , grain quality , model

顾蕴倩1, 刘雪1, 张巍1, 亓春杰1, 汤开磊1, 赵杨1, 张岩1, 李刚1, 王斌1, 赵春江2, 周剑敏3, 罗卫红1. 花后弱光逆境对弱筋小麦产量构成因素和籽粒品质影响的模拟模型[J]. 中国农业科学, 2013, 46(21): 4416-4426.

GU Yun-Qian-1, LIU Xue-1, ZHANG Wei-1, QI Chun-Jie-1, TANG Kai-Lei-1, ZHAO Yang-1, ZHANG Yan-1, LI Gang-1, WANG Bin-1, ZHAO Chun-Jiang-2, ZHOU Jian-Min-3, LUO Wei-Hong-1. Quantifying the Effects of Low Level of Radiation After Anthesis on Yield Components and Grain Quality of Weak Gluten Wheat[J]. Scientia Agricultura Sinica, 2013, 46(21): 4416-4426.

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花后弱光逆境对弱筋小麦产量构成因素和籽粒品质影响的模拟模型

Quantifying the Effects of Low Level of Radiation After Anthesis on Yield Components and Grain Quality of Weak Gluten Wheat

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