干旱区生态环境知识资源中心(Arid): 绿洲膜下滴灌调亏马铃薯光合生理特性与水分利用

Arid

	绿洲膜下滴灌调亏马铃薯光合生理特性与水分利用
其他题名	Photosynthetic Physiological Characteristics and Water Use of Potato with Mulched Drip Irrigation under Water Deficit in Oasis Region
	张恒嘉; 李晶
来源期刊	农业机械学报
ISSN	1000-1298
出版年	2013
卷号	44 期号:10 页码:143-151
中文摘要	通过大田试验研究了调亏灌溉对绿洲膜下滴灌马铃薯各项光合生理指标、产量和水分利用的影响。结果表明:不同生育期水分调亏均可引起马铃薯叶片光合速率、蒸腾速率和气孔导度降低,复水后光合速率变化不大,蒸腾速率和气孔导度则均有所增大。块茎形成期轻度调亏马铃薯产量不会降低,而块茎形成期中度调亏、块茎膨大期轻度和中度调亏马铃薯产量则显著(p<0.05)降低。马铃薯不同生育阶段耗水量受水分调亏影响较大,调亏程度越大耗水量减少越显著,所有水分调亏马铃薯全生育期耗水量均显著低于充分供水。块茎形成期水分轻度调亏马铃薯水分利用效率最高,比块茎膨大期中度调亏、淀粉积累期轻度调亏和全生育期充分供水分别提高36.2%、32.4%和14.2%。因此,膜下滴灌调亏可降低马铃薯光合速率、蒸腾速率、气孔导度和耗水量,促进水分利用效率提高,且块茎形成期轻度调亏不会降低马铃薯产量。
英文摘要	A field experiment was conducted to test the effect of mulched drip irrigation under water deficit regulation (WDR) on leaf photosynthetic rate (P_n), transpiration rate (T_r), stomatal conductance (G_s), tuber yield and potato water use in oasis irrigation region. The results showed that P_n, T_r and Gs were reduced by WDR during different potato growth stages. No obvious difference was found in Pn before and after re-watering of potato, but T_r and G_s were obviously improved. Potato yield was not decreased by low WDR during tuber initiation, but was significantly (p<0.05) decreased in the medium WDR plots during tuber initiation and low and medium WDR plots during tuber bulking. Periodic water consumption of potato was greatly affected by WDR, and the higher soil water deficit, the less potato periodic water consumption. In addition, the total water consumption throughout the whole growing season was significantly lower in all the WDR potatoes than that in full irrigation plots (CK). The highest water use efficiency (WUE) was maintained in low WDR potato during tuber initiation, significantly improved by 36.2%, 32.4% and 14.2% than that in medium WDR plots during tuber bulking, low WDR plots during potato starch accumulation and CK, respectively. Therefore, mulched drip irrigation under WDR may reduce P_n, T_r, G_s, and periodic and total water consumption of potato, but its WUE can be greatly improved. In addition, potato yield will not be reduced by mulched drip irrigation under low WDR during tuber initiation.
中文关键词	绿洲马铃薯 ; 膜下滴灌 ; 水分调亏 ; 光合生理特性 ; 水分利用效率 ; 产量
英文关键词	Oasis potato Mulched drip irrigation ater deficit Photosynthetic physiological characteristics Water use efficiency Yield
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4963725
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229916
作者单位	甘肃农业大学工学院, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	张恒嘉,李晶. 绿洲膜下滴灌调亏马铃薯光合生理特性与水分利用[J]. 甘肃农业大学,2013,44(10):143-151.
APA	张恒嘉,&李晶.(2013).绿洲膜下滴灌调亏马铃薯光合生理特性与水分利用.农业机械学报,44(10),143-151.
MLA	张恒嘉,et al."绿洲膜下滴灌调亏马铃薯光合生理特性与水分利用".农业机械学报 44.10(2013):143-151.