标题:Plastic film mulching with drip irrigation promotes maize (Zea mays L.) yield and water-use efficiency by improving photosynthetic characteristics
作者:Wang, Chuanjuan; Zhang, Yanqun; Wang, Jiandong; Xu, Di; Gong, Shihong; Wu, Zhongdong; Mo, Yan; Zhang, Yuanyuan
作者机构:[Wang, Chuanjuan; Zhang, Yanqun; Xu, Di; Gong, Shihong; Mo, Yan] China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cy 更多
通讯作者:Xu, D;Wang, JD
通讯作者地址:[Xu, D]China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100048, Peoples R China;[Wang, JD]Chine 更多
来源:ARCHIVES OF AGRONOMY AND SOIL SCIENCE
DOI:10.1080/03650340.2020.1718662
关键词:Mulched drip irrigation; spring maize; photosynthesis; grain yield;; water-use efficiency
摘要:It is important to reveal the physiological mechanism of water saving and yield increasing of mulched drip irrigation. Three treatments were applied at aspring maize field in Northeast China: mulched drip irrigation (MD), non-mulched drip irrigation (ND) and rain-fed practice (CK). Result showed that, MD treatment increased 5-year (2014-2018) average grain yield (GY) by 18.6% compared with the CK. The GY showed significant linear positive correlations with photosynthetic capacity (A(max)) and maximum carboxylation rate (V-cmax). The 2-year (2017-2018)mean A(max) and V-cmax of MD were significantly increased by 21.1%and 10.7%, respectively, compared with CK, and the increase was partially contributed by the descending of bundle-sheath cells to CO2 (L). The L of MD was decreased by 6.5-12.4% (P< 0.05) during the jointing and tasseling-milk stages. The relationships between A(max) and leaf nitrogen content (N-mass), and between V-cmax and N-mass, were affected by mulching treatment, which indicates that the higher leaf Nuse efficiency of the MD treatment. This study provides atheoretical basis for implementation ofmulched drip-irrigation technology,especially in Northeast China.
收录类别:SCIE
资源类型:期刊论文
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