Effects of water\|fertilizer\|salt coupling on growth and yield of processing tomato under drip irrigation
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DOI:10.7606/j.issn.1000-7601.2023.04.14
Key Words: brackish water  irrigation amount  nitrogen fertilizer rate  drip irrigation  processing tomato  yield  comprehensive assessment
Author NameAffiliation
LI Xuanzhi College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi, Xinjiang 832000, China
Key Laboratory of Northwest Oasis Water\|Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi, Xinjiang 832000, China 
ZHANG Jinzhu College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi, Xinjiang 832000, China
Key Laboratory of Northwest Oasis Water\|Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi, Xinjiang 832000, China 
WANG Zhenhua College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi, Xinjiang 832000, China
Key Laboratory of Northwest Oasis Water\|Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi, Xinjiang 832000, China 
LIU Jian College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi, Xinjiang 832000, China
Key Laboratory of Northwest Oasis Water\|Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi, Xinjiang 832000, China 
TAN Mingdong College of Water Conservancy & Architectural Engineering, Shihezi University, Shihezi, Xinjiang 832000, China
Key Laboratory of Modern Water\|Saving Irrigation of Xinjiang Production & Construction Group, Shihezi, Xinjiang 832000, China
Key Laboratory of Northwest Oasis Water\|Saving Agriculture, Ministry of Agriculture and Rural Affairs, Shihezi, Xinjiang 832000, China 
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Abstract:
      To explore the water and fertilizer coupling model for efficient production of processing tomato under brackish water drip irrigation in northern Xinjiang, this experiment was conducted on processing tomato ‘Jinfan 3166’ with three water irrigation levels of 5 200(W1), 4 500 m3·hm-2(W2) and 3 600 m3·hm-2 (W3), three N application levels of 300(N1), 240 kg·hm-2(N2) and 180 kg·hm-2 (N3), and three salinity levels of 1(S1), 3 g·L-1(S2) and 5 g·L-1 (S3).The effects of irrigation amount, salinity and nitrogen application on the growth, yield and water and fertilizer use efficiency of drip irrigation processing tomato were studied by L9 (33) orthogonal test design.The results showed that aboveground dry matter accumulation in the W1N2S2 treatment reached a maximum (195.52 g·plant-1) at the fruit expansion stage under brackish water irrigation. Compared with W1N1S1, yield and irrigation water use efficiency decreased by 17.85%, 27.19% and 17.84%, 27.16% under W1N2S2 and W1N3S3 treatments, respectively, and nitrogen partial factor productivity increased by 6.11% and 25.40%, respectively. Considering the growth, quality, yield and water and fertilizer utilization efficiency of processing tomato, the influencing order of each factor was: irrigation amount > salinity > nitrogen application amount. Based on the comprehensive scoring method to evaluate each index, [JP]the optimal coupling mode of water, fertilizer and salt was W1N3S3 and W1N2S2.