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| Research on Suitable Distance Parameters for East-west Ridge Mechanized Tomato Cultivation in Autumn and Winter Crops in Solar Greenhouses |
| CHEN Qifeng1，2，LI Xing1，2，FU Hongdan1，2，YU Chaoge1，2，LIU Yiling1，2，DONG Wen’ge3，ZHANG Huaren4，SUN Zhouping1，2* |
| 1College of Horticultural，Shenyang Agricultural University，Modern Facility Horticultural Engineering Technology Center，Shenyang 110065，Liaoning，China；2Key Laboratory of Horticultural Crops and Agricultural Equipment of the Ministry of Agriculture and Rural Affairs，Shenyang 110065，Liaoning，China；3Liaoning Dryland Agriculture and Forestry Research Institute，Chaoyang 122099，Liaoning，China；4Vegetable Station of Beipiao City，Chaoyang 122199，Liaoning，China |
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Abstract A greenhouse study was conducted to promote mechanized vegetable production in solar greenhouses and explore suitable ridge distance for tomato cultivation on the east-west ridges．The study included tomato variety‘Ruiyilang’as a test material with traditional north-south ridge cultivation method as control（CK）and RD1（with middle ridge distance of 1.6 m），RD2（with middle ridge distance of 1.8 m），and RD3（with middle ridge distance of 2.0 m）3 treatments designed to east-west direction ridges to study the eff ects of diff erent ridge distances on canopy environment，plant growth and yield，and fruit quality of tomato in solar greenhouse conditions．The results showed that there was no signifi cant diff erence in plant height，stem thickness，stem and leaf fresh weight，and fruit quality among the three ridge spacing treatments of tomato in the east-west ridges when compared with CK；RD2 signifi cantly increased the light interception and average yield per plant by 11.22% and 11.17% compared to CK．Under RD2 conditions，the light interception per plant of the southern row was generally higher than that of the northern row and higher than CK．At the same time，the average yield per plant of the southern row increased by 6.30% to 21.46%，and the average yield per plant of the northern row increased by 4.06% to 10.93%．Furthermore，a work lane width of 1 meter between the RD2 ridges（work lane）is capable of meeting the specifi cations of a multifunctional work platform truck that has a width of 50-75 cm．Therefore，1.8 meters is an appropriate ridge distance parameter for mechanized tomato cultivation in the east-west ridges of a solar greenhouse．
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Received: 27 November 2023
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