生菜栽种技巧-栽培技巧要点(国外英文资料).docVIP

生菜种植技术-栽培技术要点(国外英文资料) Lettuce planting cultivation techniques of.Txt24 technology - life is like the sea, tolerance for a boat, boating Yu Hai, known as the wide sea life; however, tolerance for size, path hiking, we know the tall hill; life Cantabile, tolerance is the song, and the song and the song, that song. Cultivation techniques of lettuce - cultivation techniques Lettuce, also called lettuce, is a 1 - 2 - year - old herb in the genus Lactuca that forms leaves, balls, or leaves for food. Lettuce is rich in vitamins and minerals. In the cultivation process, it is easy to obtain pollution-free products without pesticides. It is more and more popular with consumers, and the planting area is increasing year by year. Cultivation season According to the requirements of lettuce in different growth stages on the temperature of the northeast and northwest of the alpine region for spring summer. In recent years, with the development of protected cultivation, the cultivation of lettuce by means of conservation facilities has been basically sowing and annual production. The autumn cultivation should pay attention to the problem of premature bolting, should be heat resistant, resistant bolting varieties. Two, variety selection According to the local climate conditions, cultivation season, cultivation methods and market demand, the suitable fine varieties were selected. At present, the production of semi annual Italy lettuce, butter lettuce and other cold resistant bolting lettuce; American fast-growing lettuce, lettuce, purple glass king, lettuce, wheat and vegetables such as sesame oil. Three, seedling cultivation Lettuce seeds are small, germination and seedling emergence require good conditions, so more planting and transplanting methods are adopted. When the average temperature is above 10, the seedlings can be raised in open field, and suitable protective measures should be adopted when the temperature is lower than 10 degrees. 1. do the seedbed seedbed soil to fine