Analysis:

The celery cultivated in China is mainly Benqin, that is, China celery, with slender petioles, including white celery and green celery, with a wide variety. Celery was introduced from abroad in recent years, and now it has been widely planted and deeply loved by the people. The petiole is wide, the number of leaves per plant is large, and the weight is heavy, which can reach more than 1Kg;

(1) China celery (Benqin)

Breeding of Jinnan Qinshi 1 Agricultural Machinery Station in Shuang Gang Town, Jinnan District, Tianjin. This variety has strong growth potential, late bolting and few branches. Solid petiole, good quality, disease resistance and wide adaptability. The average plant weight is 0.5 kg, and the average yield per mu is 5000 ~ 10000 kg, which is suitable for open field and protected cultivation all over the country in spring and autumn.

Jinnan Dongqin Tianjin Hongcheng Celery Research Institute introduced a new celery variety on 1995. This variety has thick petioles, light green and delicious fragrance. The plant height is 90cm, the weight of each plant is 0.25Kg, and there are few branches, which is most suitable for winter production in protected areas.

Hard-core celery plant is tall, with dark green leaves, shiny, green petiole, solid or semi-solid, with a weight of 0.25Kg per plant and a yield of about 5000Kg per mu.

(2) celery (celery)

The King of California (Ventura) is tall and vigorous, with a plant height of more than 80cm. Strong resistance to Fusarium wilt and boron deficiency. It can be listed 80 days after planting. The weight per plant is above 1Kg, and the yield per mu is above 7500Kg.

Gaoyuta is 52-70R high, with a plant height of more than 70cm. It is cylindrical and easy to soften. It has strong resistance to celery virus disease and boron deficiency. It can be put on the market about 90 days after planting, the yield per mu can reach more than 7000Kg, and the weight per plant is generally above 1Kg. The tender and crisp plants are tall, reaching more than 75cm. The plant is compact and has moderate disease resistance. It can be put on the market 90 days after planting, with plant weight above 1kg and yield above 7000Kg per mu.

Florida 683 is tall, more than 75cm tall, with strong growth potential and sweet taste. Tolerance to boron deficiency. It can be listed 90 days after planting. The weight per plant is above 1Kg, and the yield per mu is above 7000Kg.

American white celery plants are upright and compact, with a plant height of more than 60cm. The weight per plant is 0.8 ~ 1 kg. Soft cultivation is easy to form naturally in protected cultivation, and the petiole at the lower part of the plant is milky white at harvest, with an yield of 5000 ~ 7000 kg per mu.

The Italian celery plant grows vigorously, with a plant height of 85cm, a stout and solid petiole, a petiole base width of 1.2cm, a thickness of 0.95cm, a crisp texture, less fiber and a strong medicinal flavor, with an average weight of about 250 grams per plant. It can withstand short-term low temperature of-10℃ and short-term high temperature of 35℃. It is the main variety of celery planted in the north and south, especially suitable for small and medium-sized arch sheds in the north, improving the sunny bed and delaying cultivation in winter, spring and autumn in solar greenhouse.

Celery varieties introduced from the United States have a plant height of about 90cm, a spreading degree of 42cm× 34cm, a green petiole, a length of 44cm, a width of 2.38cm, a thickness of 1.65cm, a width of 3.92cm at the base of leaf sheath, a solid shape, a tender texture and few fibers. The average plant weight is about 1Kg, which is suitable for raw and mature. Late maturity, growth period 100 ~ 120 days, cold and heat resistance, storage resistance. Slightly infected with black heart disease, it is not easy to bolting. The plant spacing is slightly larger than this celery, and it is appropriate to have 8000 ~ 9000 plants per mu.