Arid
DOI10.1002/jsfa.11394
Deficit drip irrigation based on crop evapotranspiration and precipitation forecast improves water- use efficiency and grain yield of summer maize
Lu, Junsheng; Ma, Lihui; Hu, Tiantian; Geng, Chenming; Yan, Shicheng
Corresponding AuthorHu, TT (corresponding author), Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China.
JournalJOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
ISSN0022-5142
EISSN1097-0010
Year Published2021-07
Abstract in EnglishBACKGROUND Limited and erratic precipitation with inefficient irrigation scheduling often leads to an unstable crop yield and low water-use efficiency (WUE) in semi-arid and semi-humid regions. A 2-year field experiment was conducted to evaluate the effect of three irrigation strategies (conventional irrigation (CK), full-drip irrigation (FI), based on crop evapotranspiration and precipitation forecast, and deficit drip irrigation (DI) (75% FI)) on photosynthetic characteristics, leaf-to-air temperature difference ( increment T), grain yield, and the WUE of summer maize. RESULTS The results showed that the daily average net photosynthetic rate (Pn) of DI and FI increased by 25.4% and 25.8% at jointing stage in 2018, and 26.3% and 26.5% at grain-filling stage in 2019 compared with CK, respectively. At jointing stage in 2018 and grain-filling stage in 2019, the transpiration rate (Tr) of DI was significantly lower than that of FI (P < 0.05) but there was insignificant difference in Pn value (P > 0.05). The increment T between 12:00-14:00 of DI and FI was significantly lower than that of CK at jointing stage in 2018 and grain-filling stage in 2019 (P < 0.05). The 2-year average grain yields of DI and FI were 11.4 and 11.5 t ha(-1), which increased by 32.4% and 32.8% compared with CK, respectively. The WUE of DI was 2.82 kg m(-3), which was 17.9% and 33.8% higher than that of FI and CK, respectively. CONCLUSION Deficit drip irrigation based on crop evapotranspiration and precipitation forecast improves crop WUE and maintains high grain yields in semi-arid and semi-humid regions. (c) 2021 Society of Chemical Industry.
Keyword in Englishirrigation strategy drought stress photosynthetic rate leaf-to-air temperature difference transpiration rate
SubtypeArticle ; Early Access
Language英语
Indexed BySCI-E
WOS IDWOS:000669054100001
WOS KeywordROTATION SYSTEM ; CORN PRODUCTION ; DROUGHT STRESS ; LOESS PLATEAU ; RICE ; PHOTOSYNTHESIS ; PRODUCTIVITY ; NITRATE ; CANOPY ; GROWTH
WOS SubjectAgriculture, Multidisciplinary ; Chemistry, Applied ; Food Science & Technology
WOS Research AreaAgriculture ; Chemistry ; Food Science & Technology
Source Institution兰州大学 ; 西北农林科技大学
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/367552
Affiliation[Lu, Junsheng; Hu, Tiantian; Geng, Chenming] Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling, Shaanxi, Peoples R China; [Lu, Junsheng; Hu, Tiantian; Geng, Chenming] Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China; [Ma, Lihui] Northwest A&F Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China; [Yan, Shicheng] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Lanzhou, Peoples R China
Recommended Citation
GB/T 7714
Lu, Junsheng,Ma, Lihui,Hu, Tiantian,et al. Deficit drip irrigation based on crop evapotranspiration and precipitation forecast improves water- use efficiency and grain yield of summer maize[J]. 兰州大学, 西北农林科技大学,2021.
APA Lu, Junsheng,Ma, Lihui,Hu, Tiantian,Geng, Chenming,&Yan, Shicheng.(2021).Deficit drip irrigation based on crop evapotranspiration and precipitation forecast improves water- use efficiency and grain yield of summer maize.JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE.
MLA Lu, Junsheng,et al."Deficit drip irrigation based on crop evapotranspiration and precipitation forecast improves water- use efficiency and grain yield of summer maize".JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE (2021).
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