globalchange  > 气候变化与战略
CSCD记录号: CSCD:5809543
论文题名:
模拟增温对小麦生长及土壤的调控效应
其他题名: Control Response of Temperature Enhancement on Growth and Soil Health of Wheat
作者: 孙正国
刊名: 核农学报
ISSN: 1000-8551
出版年: 2016
卷: 30, 期:10, 页码:2180-2186
语种: 中文
中文关键词: 模拟增温 ; 小麦 ; 生长 ; 土壤健康 ; 调控效应
英文关键词: temperature enhancement ; wheat ; growth characteristics ; soil health ; control response
WOS学科分类: AGRONOMY
WOS研究方向: Agriculture
中文摘要: 为了探索增温对小麦生长及其土壤的调控效应,采用开顶式生长室(OTC)连续2年小尺度的模拟生态控制试验,以同等条件自然状态生长作为对照(CK),同步监测模拟增温处理下不同时期小麦生长状况及土壤健康状况。结果表明,相同时期小麦土壤温度均表现为OTC > CK,土壤湿度均表现为CK > OTC,在成熟期二者的差距最小;模拟增温增加了生长期小麦的土壤呼吸均随生长期的变化,OTC和 CK小麦土壤呼吸呈先增加后降低趋势,相同时期小麦土壤呼吸均表现为OTC > CK,土壤呼吸和土壤温度呈极显著的指数关系,OTC和CK的指数回归方程可分别解释土壤呼吸81. 24%和75. 38%的变异;模拟增温增加了小麦的土壤酶活性,随生长期的变化,OTC和CK小麦土壤酶活性均呈先增加后降低趋势,相同时期小麦土壤酶活性均表现为OTC > CK,土壤酶活性和土壤温度呈极显著的指数关系,OTC和 CK的指数回归方程可分别解释土壤呼吸87. 26%和82. 41%的变异;随生长期的变化,OTC和CK小麦叶绿素含量均呈先增加后降低趋势,可溶性蛋白、可溶性糖、叶片N和P含量呈逐渐增加趋势,相同时期均表现为OTC > CK;成熟期小麦株高、茎粗、叶面积指数、比叶重、R/S、穗粒数和千粒重均表现为OTC > CK,模拟增温提高了成熟期的叶片品质。综上,短期的模拟增温能够提高土壤健康性能,促进小麦生长。本研究为实现全球气候变化背景下小麦的高产优质栽培提供了理论基础。
英文摘要: In order to explore the control response of temperature enhancement on growth and soil health of Wheat,a two-year small scale experiment were carried out by the method of Open-top chamber (OTC),and the natural growth under the same condition as a control (CK) . The results showed as follows: in the whole wheat's growth stage,the soil temperature for OTC was greater than CK,while the soil humidity was lower than CK. Simulated temperature enhancement increased the soil respiration at wheat's growth stage,which first increased and then decreased,and for OTC,it was higher than CK at the same stage. Soil respiration was significantly exponential correlated with soil temperature (P < 0. 001),and the exponential regression of OTC and CK could explain the variation of soil respiration by 81. 24% and 75. 38%,respectively. Simulated temperature enhancement increased the soil enzyme activities at wheat's growth stage. The soil enzyme activities of OTC and CK first increased and then decreased at the growth stage. There were significantly exponential relationship between soil enzyme activities and soil temperature (P < 0. 001),and the exponential regression of OTC and CK could explain the variation of soil respiration by 87. 26% and 82. 14%, respectively. The content of chlorophyll a and b of OTC and CK first increased and then decreased,while the content of soluble protein,soluble sugar,leaf N and P content increased gradually with OTC > CK at the same stage. At mature stage,the stem diameter,leaf area index,specific leaf weight,R/S,grains per ear and grain weight under OTC were greater than CK. Taken together,simulated temperature enhancement was beneficial to improve the soil health and promote the growth of wheat,which provide the theoretical basis to realize the high yield and good quality of wheat under the background of global climate change.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/150960
Appears in Collections:气候变化与战略

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作者单位: 南通农业职业技术学院, 南通, 江苏 226007, 中国

Recommended Citation:
孙正国. 模拟增温对小麦生长及土壤的调控效应[J]. 核农学报,2016-01-01,30(10):2180-2186
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