| 华北春旱年型对冬小麦影响的模拟试验 |
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| 引用本文： | 霍治国、徐祥德、白月明、温民、王春乙,郑江平.华北春旱年型对冬小麦影响的模拟试验[J].资源科学,2000,22(2):72-76. |
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| 作者姓名： | 霍治国、徐祥德、白月明、温民、王春乙 郑江平 |
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| 作者单位： | 1. 中国气象科学研究院,北京,100081
2. 中国气象局预测减灾司,北京,100081 |
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| 基金项目： | 国家“九五”农业科技攻关项目!“农业气象灾害防御技术研究”96 -0 2 0 -0 1-0 1专题资助 |
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| 摘 要： | 利用大型活动式遮雨棚遮档自然降水，采用人工控制定量喷灌模拟冬小麦生产中3、5、7、10、14a-遇的春旱年型，研究不同春旱年型对冬小麦不同生长发育阶段和产量的影响。试验结果表明：随着春旱年型的增加，冬小麦根、茎、叶、的生长速度明显降低，总生物量减少；春季干旱使冬小麦春生分蘖减少，单位面积总穗数减少，穗长变短，穗粒数减少，千粒重降低，不孕小穗数增加；3、5、7、10、14a－遇春旱处理的冬小麦产量分别比CK减少2.6%、14.6%、22.1%、43.0%、47.2%。春季干旱程度与冬小麦产量呈指数曲线相关。
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| 关 键 词： | 华北地区 冬小麦 春旱年型 田间试验 |
| 修稿时间： | 1999-05-21 |
SIMULATION EXPERIMENT OF POSSIBLE EFFECTS OF VARIOUS ARID PERIODS IN SPRING ON WINTER WHEAT IN NORTH CHINA |
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| HUO Zhi-guo,ZHENG Jiang-ping,XU Xiang-de,BAI Yue-ming,WEN Min,WANG Chun-yi.SIMULATION EXPERIMENT OF POSSIBLE EFFECTS OF VARIOUS ARID PERIODS IN SPRING ON WINTER WHEAT IN NORTH CHINA[J].Resources Science,2000,22(2):72-76. |
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| Authors: | HUO Zhi-guo ZHENG Jiang-ping XU Xiang-de BAI Yue-ming WEN Min WANG Chun-yi |
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| Abstract: | The arid periods of 3,5,7,10 and 14 years of winter wheat in spring are simulated by controlled quantitative sprinking irrigation by large moving waterproof canopy to keep out of precipitation.The possible effects of various arid periods in spring on different growing stages and yield of winter wheat are studied.The field experimental results show that with the increase in arid periods,growing rates of root,stem and leaf of winter wheat reduce distinctly;biomass tiller number in spring,total spike number per unit area,grains per spike and weight of thousand grains of winter wheat decrease;spike length of winter wheat becomes shorter,and numbers of unfertilized spike increase.The winter wheat yields in arid periods of 3,5,7,10 and 14 years in spring are cut down by 2\^6,14\^6,22\^1,42 and 47% than the contrast respectively.There are exponential function curve relations between arid degrees in spring and yield of winter wheat. |
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| Keywords: | North China Winter wheat Arid periods Field experiment |
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