Drip Irrigation Scheduling for Tomato Grown in Solar Greenhouse Based on Pan Evaporation in North China Plain

作者：Liu Hao; Duan Ai-wang; Li Fu-sheng; Sun Jing-sheng^*; Wang Yan-cong; Sun Chi-tao

来源：Journal of Integrative Agriculture, 2013, 12(3): 520-531.

DOI：10.1016/S2095-3119(13)60253-1

• drip irrigation
• fruit quality
• irrigation scheduling
• tomato
• water use efficiency
• yield

This study has investigated the suitable drip irrigation scheduling for tomato grown in solar greenhouse based on 20-cm pan evaporation (E-pan) in North China Plain. Irrigation treatments included three irrigation frequencies (I-1 10, I-2 20 and I-3 30 mm, and irrigation interval of 2-6 d for I-1, 4-9 d for I-2 and 8-12 d for I-3) based on accumulated pan evaporation (E-pan), and four plant-pan coefficients (K-cp1 0.5, K-cp2 0.7, K-cp3 0.9 and K-cp4 1.1). Results indicate that total irrigation amount, seasonal crop evapotranspiration (ET) and tomato yield (Y) were 185.1-365.8 mm, 249.1-388.0 mm and 99.6-151.8 t ha(-1), respectively. Irrigation frequency and amount increased the yield, and second-degree polynomial relationship was found between Y and ET (R-2=0.8671). Irrigation frequency did not increase mean fruit weight, diameter and length significantly but increased fruit number, total soluble solids content (TSS), TSS yield, fruit firmness and water use efficiency (WUE) and irrigation WUE (IWUE) significantly. Irrigation amount increased external quality of tomato but reduced TSS content, TSS yield, fruit firmness, WUE and IWUE significantly. K-cp3 and K-cp4 treatments had the highest fruit yield, but K-cp2 and K-cp3 treatments had the highest WUE. I1Kcp3 treatment (irrigation interval of 2-6 d, and K-cp=0.9) had higher IWUE, WUE, external quality, yield, and TSS yield, so it is recommended as the suitable irrigation scheduling for tomato grown in solar greenhouse in North China Plain.

• 出版日期2013
• 单位广西大学; 中国农业科学院