Introduction to the Characteristics and Cultivation Techniques of the Jinnan Winter Celery Variety

Variety source: Also known as Jinnan Solid Celery No. 2, it was developed through line selection by the Agricultural Science Station of Shuanggang Township, Jinnan District, Tianjin, and the Hongcheng Celery Research Institute from the progeny of a cross between Jinnan Solid Celery and American Celery. It passed the Tianjin crop variety certification in 1995. Characteristics: This variety belongs to the yellow-green type, with pinnate compound leaves, relatively large leaflets, green color, and relatively large leaf serrations. The root system is well developed and the growth rate is fast. The single plant weight is 0.6 kg, and the plant height is about 90 cm. The petiole is 60 cm long, yellow-green, solid, semicircular in cross-section, relatively smooth, and the quality is fresh and tender. It has strong cold resistance; young seedlings with four leaves and one heart can endure short periods of -10°C low temperature; when encountering short periods of around 0°C low temperature in the middle and late growth stages, the plants can gradually resume growth as the temperature rises after being frozen down. Under suitable temperatures, the solid-heart rate of the petiole is over 95%. Under long periods of 5-10°C low temperature in winter, the pithiness rate is more than 20% lower than that of Jinnan Solid Celery and Italian Winter Celery, and close to American Celery. It has few branches, bolts late, has a long harvest period, and has relatively strong resistance to late blight and viral diseases. Cultivation points: It is suitable for winter solar greenhouse cultivation in all regions of China, and can also be cultivated in large, medium, and small sheds or in open fields. The planting spacing is 10 cm x 20 cm, with 40,000 seedlings planted per mu.