Cultivation technique of summer and autumn lettuces

Abstract

The invention relates to a cultivation technique of summer and autumn lettuces. gibberellin solution and garlic solution are mixed into soaking liquid for soaking seeds, germinating rate can be increased, and foot rot in the lettuces can also be inhibited; by ploughing a land before swing, part of overwintering pupae can be killed, and fewer sources of attacking pests occur in a next year; in the rosette stage of the lettuces, fenvalerate-malathion emulsifiable concentrate can be sprayed to leaves of the lettuces to effectively prevent occurrence of lettuce aphids; by covering the land with a shade net, growth temperature of the lettuces can be effectively controlled, the bolting process of the lettuces can be effectively delayed, the growth cycle of fleshy roots is prolong, and the economic benefit of the lettuces is improved.

Description

technical field [0001] The invention relates to the technical field of vegetable cultivation, in particular to a cultivation technology of summer and autumn lettuce. Background technique [0002] Lettuce, also known as lettuce, is a species of Lactuca in the Compositae family that can form fleshy tender stems. It is a biennial herb plant, also known as lettuce for stems, lettuce shoots, green shoots, and lettuce. Birth period: January-April. Native to Central China or North China, the aboveground stems are edible, the stem skin is white-green, the flesh is crisp and tender, the young stems are emerald green, and turn white-green when mature, the fleshy tender stems are mainly edible, and can be eaten raw, cold, fried, dried or Pickled, young leaves are also edible, stems and leaves contain lettuce, lettuce has a fresh and slightly bitter taste, which can stimulate the secretion of digestive enzymes and increase appetite. Its milky serous fluid can enhance the secretion of ...

AI Technical Summary

Problems solved by technology

Its milky serous fluid can enhance the secretion of gastric juice, digestive glands and bile, thereby promoting the functions of various digestive organs. It is especially beneficial to patients with weakened digestive function, decreased acidity in the digestive tract and constipation. The main market time for traditional cultivation of lettuce is spring and autumn In the two seasons, namely March to May and October to November, there is no supply of lettuce in summer and autumn, mainly because lettuce likes cold and cool climates, and the growth period of summer and autumn lettuce coincides with the high temperature season. High temperature and long sunshine can easily cause lettuce to bolt in advance, resulting in Lettuce is slender, poor in quality and low in yield, which is one of the main factors restricting the development of summer and autumn lettuce