关键词: 番茄, 东西垄向, 种植密度, 产量构成, 光环境, 日光温室, 宁夏

Abstract: In order to explore the suitable cultivation mode for mechanized farming of vegetables in solar greenhouse,the experiment was conducted to study the yield composition and population light environment characteristics of tomato under 3 different planting densities of east-west ridge (ridge width of 70 cm,ridge center spacing of 1.8 m,ridge height of 25 cm,double row cultivation,row spacing of 30 cm,with 3 kinds of plant spacing) in greenhouse. The results showed that the light intensity at the top and bottom of tomato canopy decreased gradually from north to south ridge and increased gradually in the middle of canopy with different density treatments. With the decrease of planting density,the light intensity in the middle and lower canopy of tomato plants increased significantly.The yields of B1 treatment (30 000 plants/ha,plant spacing of 33 cm) and B3 treatment (45 000 plants/ha,plant spacing of 22.2 cm) were significantly higher than B2 treatment(37 500 plants/ha,plant spacing of 26.5 cm).The single fruit weight and yield per plant of B1 were significantly higher than that of B2,and the soluble sugar and protein content of B1 tomato fruit were the highest.Therefore,in Ningxia,the B1 treatment cultivation mode should be adopted in the east-west ridge cultivation of tomatoes in spring and summer.The light environment and fruit quality are better and the income is higher.

Key words: Tomato, East-west ridge, Plant density, Yield components, Light environment, Solar greenhouse, Ningxia