Onion over-wintering seedling culture method

Abstract

The invention belongs to the technical field of vegetable cultivation, and particularly relates to an onion over-wintering seedling culture method. Particularly, onion seeds are soaked in diluted ammonium sulfate until white appears, the onion seeds are selected, complex enzyme preparations are spread to a field, soil is renewed, sowing is performed, a layer of 0.8-1.2cm thick insect-proof mixture is laid at the bottom of a hole during sowing, Chinese yam electro-conductive adhesives removers are sprayed to leaf surfaces after onion seedlings emerge, and the seedlings are lifted when the diameters of onion leaf sheaths reach 6-7 millimeters and single plant fresh weight reaches 4-6g. During onion over-wintering seedling culture, pest and disease damage incidence rate is low, germination rate after sowing is higher than 99.5%, seedling rate is higher than 93.0%, growth vigor is rapid, seedling culture period is short, seedling lifting standards can be met within 50 days, and the seedlings can be lifted.

Description

technical field [0001] The invention belongs to the technical field of vegetable planting, and in particular relates to a method for overwintering onion seedlings. Background technique [0002] Onion is a commonly used vegetable that is resistant to transportation and storage. The edible part is a hypertrophic fleshy bulb, which has a special spicy taste, can increase appetite, and can treat many diseases. It is not only resistant to storage, but also dehydrated and processed into export vegetables. Onion can be divided into three types according to the skin color of fresh stems: red skin, yellow skin, and white skin. Different spherical shapes are related to early and late maturity. Generally, the flatter the spherical shape, the earlier the ripeness. The purpose of onion cultivation is to obtain underground hypertrophic bulbs. The cultivation technology should be based on the growth law and the comprehensive demand for the environment, so that nutrition can be transported ...

AI Technical Summary

Problems solved by technology

[0002] Onion is a commonly used vegetable that is resistant to transportation and storage. The edible part is a hypertrophic fleshy bulb, which has a special spicy taste, can increase appetite, and can treat many diseases. It is not only resistant to storage, but also dehydrated and processed into export vegetables. Onion can be divided into three types according to the skin color of fresh stems: red skin, yellow skin, and white skin. Different spherical shapes are related to early and late maturity. Generally, the flatter the spherical shape, the earlier the ripeness. The purpose of onion cultivation is to obtain underground hypertrophic bulbs. The cultivation technology should be based on the growth law and the comprehensive demand for the environment, so that nutrition can be transported in the direction of bulb expansion, so as to increase production. Onion seedling cultivation in winter is one of the ways to raise seedlings. Winter seedling cultivation The obtained onion seedlings are drought-resistant and have good resistance to diseases and insect pests, so they are welcomed by the majority of growers. However, the winter seedlings are vulnerable to freezing damage, and it is necessary to choose plots that have not been planted with onions, otherwise the seedling death rate will be relatively high in overwintering seedlings. The current solution is generally to choose to develop plots that have not been planted with onions, build greenhouses for overwintering seedlings, and change the plots every year to build new greenhouses. Not only is the procedure cumbersome, but the cost of seedling cultivation is also high