Efficient seedling growing method of purple sweet potatoes

Abstract

The invention discloses an efficient seedling growing method of purple sweet potatoes, and belongs to the technical field of purple sweet potato cultivation. The efficient seedling growing method comprises the following steps: (1) potato seed pre-treatment: seed selecting, liquid medicine immersing, tuber cutting and medicine spraying; (2) seed arrangement and seedling growing of potato seed tubers: planting, wetting by warm water and heat preservation by a mulching film; (3) purple sweet potato young seedling management: medicine spraying and seedling cutting. According to the efficient seedling growing method disclosed by the invention, each surface of the potato seed tubers is immersed in or smeared with the liquid medicine which is used for facilitating the growth of the potato seed tubers, so that potato seeds can sprout as soon as possible; a seed arrangement way that a longitudinal section faces downwards aslant is adopted, so that the germination rate and the emergence rate of the potato seeds are increased; the warm water is sprayed for many times during seedling growing, so that the temperature and the humidity of nursery soil are effectively improved; during a growing process of young seedlings, fertilizer in an appropriate amount is applied for many times, meanwhile, ordered temperature control is realized by combining the mulching film, continuous and appropriate fertilizer support and suitable temperature and humidity are provided for the growth of the young seedlings of the purple sweet potatoes, the emergence rate and the emergence quality are obviously increased, the seedling growing steps are simple, electrical equipment is not required for supplying heat and keeping warm, and the investment cost is low.

Description

technical field [0001] The invention relates to a method for efficiently raising seedlings of purple sweet potatoes, which belongs to the technical field of purple sweet potato cultivation. Background technique [0002] Purple sweet potato is rich in nutrients and has special health functions. It is rich in protein, starch, pectin, cellulose, amino acids, vitamins and various minerals. It is also rich in selenium and anthocyanins. The protein and amino acids are very easy to eat. It is digested and absorbed by the human body to meet the nutritional needs of the human body; rich in vitamins can improve human vision, etc., so the health care effect has attracted people's attention. In addition, purple sweet potatoes are delicious and have various eating methods. They can be processed into whole powder and snack foods. The demand is large, so the cultivation of purple sweet potato has high economic benefits. [0003] At present, purple sweet potato seedlings are mainly raised ...

AI Technical Summary

Problems solved by technology

[0003] At present, purple potato seedlings are mainly raised through the following methods. One is to use large seedling sheds to promote the growth and development of seedlings through external heating. The potato is buried in the soil as a whole. This method of raising seedlings will lead to difficulty in germination of the lower part of the purple potato, poor seedling emergence rate and quality, low seedling raising efficiency, poor seedling survival rate and survival quality, which is not conducive to the breeding and planting of purple potato.