What varieties of lettuce are cultivated in Shanghai? The three excellent lettuce varieties planted in Shanghai from July to August are special heat-resistant two white skins, spring and autumn two white skins, and spring and autumn two green skins. These three kinds of excellent lettuce varieties are in terms of growth habits and growth stages. There are certain differences on this. Today, Xiaobian will briefly talk about the differences between the special heat-resistant white skin, the spring and autumn two white skin, and the spring and autumn two green skins. I hope that everyone can help. 1, special heat-resistant two white skin a. It has been cultivated by the Vegetable Research Institute of Guanghan City, Sichuan Province. It has been planted for many years in Shanghai and is suitable for planting in early autumn and autumn. b. The heat resistance is extremely strong, the color is green, the skin is white and tender, and the meat is light green. c, can grow well at a temperature of 12-38 degrees. d, 40-50 days after planting can be harvested, single stem weight 0.5-1kg. 2, spring and autumn two white skin a. It is a local variety in Chengdu, Sichuan Province. It has the characteristics of heat resistance, early maturity, and difficulty in bolting. It is mainly planted in autumn. b. The height of the plant is 40 cm, the degree of development is 45-50 cm, the stem length is about 30 cm, and the stem is 5 cm thick. c. The leaves are erect and obovate, the stems are thick and dense, the meat is tender and crisp, and the quality is good. d, hi-temperature precocious, not easy to bolt, good resistance to stress. e. The whole growth period of early autumn cultivation is 50 days, the weight per plant is 150-300g, and the average yield per mu is 700-1000kg. f. The whole growth period of late autumn cultivation is 60-70 days, and the average yield per mu is 1000-1500kg. g. The whole growth period of spring and autumn cultivation is 180 days, and the average yield per mu is 1500-2000kg. 3, spring and autumn two green skin a. It is a local variety in Chengdu, Sichuan Province. It is mainly cultivated in late autumn and spring when planting. Of course, it can be cultivated in early autumn. b. The height of the plant is 35-40 cm, the degree of development is 45-50 cm, the stem length is 35 cm, the stem is 6 cm thick, and the weight per plant is 200-300 g. c. The leaves are erect in an oval shape, the stems are dense and thick, and the meat is light green. d, early and middle-cooked, warm, not easy to smoke when planting in summer and autumn. e. The whole growth period of early autumn cultivation is 55-60 days, and the average yield per mu is 800-1000kg. f. The whole growth period of late autumn cultivation is 70-80 days, and the average yield per mu is 1500kg. g. The whole growth period of spring cultivation is 190 days, and the average yield per mu is 2000kg. Oyster Sauce,Oyster Sauce Seasoning,Qualified Oyster Sauce,Premium Oyster Sauce Chinese Seasoning (Shandong) Trading Co.,Ltd , https://www.zt-trading.com
