What are the main types of tomato cultivars?

(1) early maturing varieties of this type of varieties in the main trunk of the 6 ~ 8 nodes bearing the first flower spike, and then every 2 nodes or so bearing a flower spike, usually bearing 2 ~ 3 spikes of flowers, the plant's trunk will no longer be elongated, and no longer appear flower spikes, the fruiting period is relatively short. Early ripening tomato varieties are mainly used in the shorter cultivation period of early spring cultivation and delayed cultivation in the fall, planting density is relatively large, generally 6 to 7 seedlings per square meter. The main varieties are early abundance, Golden Shed No. 1, super group, the United States of America, big red, early Kui, Autumn abundance, Lu powder No. 2 and so on. (2) late-maturing varieties of this type of varieties are generally born in the main stem of the 8 ~ 9 section of the first flower spike, and then every 2 ~ 3 sections bearing a flower spike. When the cultivation conditions are suitable, the main stem can be unlimitedly elongated, and the flower spike also grows continuously until the plant dies. The fruiting period of the medium-late maturing varieties is relatively long, and the open field cultivation can generally produce 8~10 spikes, and the protected cultivation can produce more than 10 spikes. The planting density of such varieties is relatively small, generally 5 to 6 seedlings per square meter, mainly used for cultivation period longer tomato high-yield cultivation. The main varieties are Israel 163, Israel 3098, hairy pink 802, L402, No. 9, 144, FA-189, Bailey and so on. In addition, according to the thickness of the fruit skin is different, tomato varieties are divided into thin-skinned tomatoes and thick-skinned tomatoes. Thin-skinned juicy fruit, large seed cavity, intolerance of squeezing, ripening flesh quickly become soft, short storage period, poor storage and transportation resistance. China's traditional cultivated tomato varieties are mostly thin-skinned tomatoes, excellent varieties of hairy powder 802, No. 9, L-402 and so on. Thick-skinned tomatoes thick skin less juice, seed cavity small, resistant to squeeze, can be stored for a long time, strong resistance to storage and transportation. At present, the domestic cultivation of thick-skinned tomato varieties introduced from abroad, excellent varieties of Bailey, Mawa, Red Prince and so on.