Clever Use of Welsh Onions in Greenhouses to Sterilize and Prevent Vegetable Diseases
Welsh onion (Allium fistulosum) is a biennial vegetable of the Liliaceae family, cold-tolerant and highly adaptable. Its leaves release propyl sulfide with a pungent odor, and its root system secretes bactericidal substances; together they can effectively suppress the spread of various pathogens in the air and soil, prevent infection, or kill pathogens, significantly reducing the disease rate of vegetable plants...
Welsh onion (Allium fistulosum) is a biennial vegetable of the Liliaceae family, cold-tolerant and highly adaptable. Its leaves release propyl sulfide with a pungent odor, and its root system secretes bactericidal substances; together they can effectively suppress the spread of various pathogens in the air and soil, prevent infection, or kill pathogens, significantly reducing the disease rate of vegetable plants.
Using soil where Welsh onions were previously grown to prepare seedbed soil. For preparing seedbed soil, field soil is generally used, and soil where Welsh onions were previously grown is best. If no such soil is available, field soil can be brought into the greenhouse, spread to a thickness of 15 cm, and planted with Welsh onions; after the Welsh onions have grown for about 1 month, they can be pulled up, and the soil used to prepare seedbed soil. This can reduce the occurrence of soil-borne diseases during the seedling stage.
Plant more Welsh onions in the seedling greenhouse
During the greenhouse seedling period, make the most of the surrounding areas and empty spaces inside the greenhouse to plant as many Welsh onions as possible. In a well-sealed greenhouse, if the pungent smell of propyl sulfide can be detected when entering the greenhouse in the morning, the sterilizing effect is good.
Interplanting cucumbers, tomatoes and other vegetables with Welsh onions
After planting cucumbers, tomatoes and other vegetables in a solar greenhouse, immediately plant 1 Welsh onion 4-6 cm beside each cucumber, tomato and other vegetable plant, so that the cucumbers, tomatoes and other vegetables grow together with the Welsh onions.
Mixed sowing or inter-row sowing with leafy vegetables
In autumn and winter, Welsh onion seeds are mixed-sown with leafy vegetable seeds, or Welsh onions are sown between the rows of sown leafy vegetables. When harvesting the leafy vegetables, leave the Welsh onions in place; when the soil is prepared next time, plow them into the soil, which can disinfect the soil.