Asparagus lettuce cultivation method

Abstract

The invention discloses an asparagus lettuce cultivation method, and relates to the technical field of vegetable planting. The invention especially relates to an asparagus lettuce planting method. With the method provided by the invention, soil nutrition is enhanced, and an antibacterial effect is provided. The method is suitable for asparagus lettuce growth. The method is characterized in comprising the following steps: 1, an improved variety is selected, wherein a late-maturing spring asparagus lettuce variety that can hardly bolt is selected; 2, a sowing time is determined, wherein greenhouse seedling raising of spring asparagus lettuce is carried out from December to March, and open field seedling raising is carried out from mid-February to late March; 3, spring asparagus lettuce field planting is carried out, wherein field planting is usually carried out in mid-December and preferably on sunny days while the soil is moist, such that seedling root damage can be reduced; 4, fertilizer and water management is reinforced, wherein an overall principle for fertilization is that a base fertilizer should be heavily applied and top dressing should be lightly and frequently applied; and 5, an asparagus lettuce harvesting standard is that an appropriate harvesting time is that when heart leaves are aligned with outer leaves or before squaring. If harvesting is carried out too early, yield is influenced. If harvesting is carried out too late, stem nutrients are consumed, and bolting, flowering, hollowing and stem bark thickening phenomena appear, such that quality is influenced.

Description

technical field [0001] The invention belongs to the technical field of vegetable planting, in particular to a method for planting lettuce. Background technique [0002] Also known as lettuce, it is a biennial herb that can form a variety of fleshy tender stems. Alias ​​lettuce for stems, lettuce shoots, green shoots, lettuce. Chromosome number 2n=2x=18. Birth period: January-April. Native to central or northern China. The stems above the ground are edible, the skin of the stem is white-green, the flesh of the stem is crisp and tender, the young stems are emerald green, and turn white-green when mature. The main edible meaty tender stems can be eaten raw, cold, fried, dried or pickled, and the tender leaves are also edible. Stems and leaves contain lettuce, which contains lettuce. Bitter in the mouth, has analgesic effect. Lettuce has strong adaptability and can be cultivated in spring and autumn or overwintering. It is mainly cultivated in spring and harvested in summ...

AI Technical Summary

Problems solved by technology

[0005] The existing lettuce planting will make the land nutrient deficient and the nutrient supplement of lettuce slow, which will affect the quality of lettuce and increase the ability of lettuce to resist diseases and insect pests