干旱区生态环境知识资源中心(Arid): Peach yield and fruit quality is maintained under mild deficit irrigation in semi-arid China

Arid

	Peach yield and fruit quality is maintained under mild deficit irrigation in semi-arid China
	Zhou Hanmi; Zhang Fucang; Roger Kjelgren; Wu Lifeng; Gong Daozhi; Zhao Na; Yin Dongxue; Xiang Youzhen; Li Zhijun
来源期刊	Journal of Integrative Agriculture
ISSN	2095-3119
出版年	2017
卷号	16 期号:5 页码:1173-1183
英文摘要	We conducted a two-year study of deficit irrigation impact on peach yield and quality in semi-arid northwest China. Over two years, four-year-old peach trees were irrigated at 100, 75, 50 and 25% of peach evapotranspiration (ET_c), here, ET_c= Coefficient (Kc)*Local reference evapotranspiration (ET_o). During the April-July fruit production season we measured root zone soil water depletion, sap flow velocity, net photosynthetic rate (P_n), transpiration rate (T_r), stomatal conductance (G_s), water use efficiency (WUE=P_n/T_r), fruit quality, and yield under a mobile rain-out shelter. Increased soil water depletion reasonably mirrored decreasing irrigation rates both years, causing progressively greater water stress. Progressive water stress lowered G_s, which in turn translated into lower T_r as measured by sap flow. However, mild deficit irrigation (75% ET_c) constricted T_r more than P_n. P_n was not different between 100 and 75% ET_c treatments in both years, and it decreased only 5-8% in June with higher temperature than that in May with cooler temperature. Concurrently under 75% ET_c treatment, T_r was reduced, and WUE was up to 13% higher than that under 100% ET_c treatment. While total fruit yield was not different under the two treatments, because 75% ET_c treatment had fewer but larger fruit than 100% ET_c trees, suggesting mild water stress thinned fruit load. By contrast, sharply decreased T_r and P_n of the driest treatments (50 and 25% ET_c) increased WUE, but less carbon uptake impacted total fruit yield, resulting 13 and 33% lower yield compared to that of 100% ET_c treatment. Irrigation rates affected fruit quality, particularly between the 100 and 75% ET_c trees. Fewer but larger fruit in the mildly water stressed trees (75% ET_c) resulted in more soluble solids and vitamin C, firmer fruit, and improved sugar:acid ratio and fruit color compared to the 100% ET_c treatment. Overall, trees deficit irrigated at 75% ET_c maintained yield while improving fruit quality and using less water.
英文关键词	peach deficit irrigation fruit quality yield sap flow velocity net photosynthetic rate (Pn)
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:5991344
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335808
作者单位	Zhou Hanmi, College of Agricultural Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China.; Zhao Na, College of Agricultural Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China.; Yin Dongxue, College of Agricultural Engineering, Henan University of Science and Technology, Luoyang, Henan 471003, China.; Zhang Fucang, Northwest A&F University, Key Laboratory for Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Yangling, Shanxi 712100, China.; Wu Lifeng, Northwest A&F University, Key Laboratory for Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Yangling, Shanxi 712100, China.; Xiang Youzhen, Northwest A&F University, Key Laboratory for Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education, Yangling, Shanxi 712100, China.; Li Zhijun, Northwest A&F University, Key Laboratory for Agricultural Soil and Water Engineering i...
推荐引用方式 GB/T 7714	Zhou Hanmi,Zhang Fucang,Roger Kjelgren,et al. Peach yield and fruit quality is maintained under mild deficit irrigation in semi-arid China[J],2017,16(5):1173-1183.
APA	Zhou Hanmi.,Zhang Fucang.,Roger Kjelgren.,Wu Lifeng.,Gong Daozhi.,...&Li Zhijun.(2017).Peach yield and fruit quality is maintained under mild deficit irrigation in semi-arid China.Journal of Integrative Agriculture,16(5),1173-1183.
MLA	Zhou Hanmi,et al."Peach yield and fruit quality is maintained under mild deficit irrigation in semi-arid China".Journal of Integrative Agriculture 16.5(2017):1173-1183.