干旱区生态环境知识资源中心(Arid): 不同灌溉定额下春小麦光合光响应特征研究

Arid

	不同灌溉定额下春小麦光合光响应特征研究
其他题名	Photosynthetic and Light Response Characteristics of Spring Wheat under Different Irrigation Schedules
	马莉 1; 王全九 2
来源期刊	农业机械学报
ISSN	1000-1298
出版年	2018
卷号	49 期号:6 页码:271-277
中文摘要	为了探讨荒漠绿洲区春小麦在干旱环境下的适应机制,测定了6个灌溉处理下春小麦的光合响应过程,采用直角双曲线模型、非直角双曲线模型、直角双曲线修正模型和指数模型分别对春小麦光响应曲线进行了拟合比较,筛选出最优模型,并利用最优模型对不同灌溉处理下春小麦的光合特征参数进行了计算。试验结果表明,随着灌溉量的增加,小麦叶片光合性能呈增加趋势,且灌浆前期大于灌浆后期;经误差分析,不同灌溉定额下4种模型的光响应曲线拟合结果存在差异,直角双曲线模型、非直角双曲线模型和指数模型对高灌水处理的光响应曲线模拟精度高于低灌水处理;直角双曲线修正模型对所有处理的模拟精度均最高,是拟合荒漠绿洲区春小麦光响应曲线的最优模型;光合参数显示,420 mm灌溉定额处理下春小麦的最大光合速率、表观量子效率、光饱和点均高于其他灌溉处理,而光补偿点则显著降低。荒漠绿洲区,适当的灌溉定额有利于扩大春小麦光的适应范围,提高光能利用能力,增加产量。
英文摘要	In order to explore the adaptation mechanism of spring wheat in arid oasis region habitat, the photosynthetic response of spring wheat was investigated by six irrigation treatments. The four light response models was comparative analysis, including rectangular hyperbolae model, non-rectangular hyperbolae model, exponential model and correction model of rectangular hyperbolae model. Then the optimal model was selected and the photosynthetic characteristics parameters of spring wheat were calculated by the optimal model with different irrigation schedules. The results showed that the photosynthetic performance of wheat leaves was increased by the increase of irrigation quota, and the photosynthetic performance in early stage of filling was greater than the late stage of filling. There was significant difference between the four light response models in different irrigation quotas. The simulate values of higher irrigation treatments were more accurate than those of lower irrigation treatments by rectangular hyperbolae model, non-rectangular hyperbolae model and exponential model. The correction model ofrectangular hyperbolae model had the maximum simulation accuracy by error tests. So it was optimal model to fit light response curves of spring wheat in desert oasis. The photosynthetic parameters showed that maximum net photosynthesis rate (P_(max)), apparent quantum efficiency (Q) and light saturation point (I_s) of 420 mm treatment were higher than those of others, but the light compensation point (I_c) was decreased significantly. Therefore, the appropriate irrigation treatments can expand the light adaption ranges of spring wheat, improve light energy utilization and promote the increase of yield in desert oasis.
中文关键词	春小麦 ; 荒漠绿洲区 ; 灌溉定额 ; 光合特征 ; 光响应模型
英文关键词	spring wheat desert oasis irrigation schedule photosynthetic characteristics light response model
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:6255182
来源机构	中国科学院水利部水土保持研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238009
作者单位	1.宝鸡文理学院, 陕西省灾害监测与机理模拟重点实验室, 宝鸡, 陕西 721013, 中国; 2.中国科学院水利部水土保持研究所;;西安理工大学水利水电学院, 黄土高原土壤侵蚀与旱地农业国家重点实验室;;, 杨凌;;西安, 陕西;; 712100;;710048, 中国
推荐引用方式 GB/T 7714	马莉,王全九. 不同灌溉定额下春小麦光合光响应特征研究[J]. 中国科学院水利部水土保持研究所,2018,49(6):271-277.
APA	马莉,&王全九.(2018).不同灌溉定额下春小麦光合光响应特征研究.农业机械学报,49(6),271-277.
MLA	马莉,et al."不同灌溉定额下春小麦光合光响应特征研究".农业机械学报 49.6(2018):271-277.