There are new ways to effectively prevent leek maggots

Leek maggots are the most common, most harmful, and most difficult underground pests on leek. In the past, in order to effectively prevent the harm of leek maggots, a large number of highly toxic and highly toxic pesticides were used, such as formazan, chlorpyrifos, and phoxim, Often cause a lot of pesticide residues. Recently, the "Key Technology Innovation and Application of Green Control and Control of Major Vegetable Pests, Leek and Maggot", developed by the Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, won the second prize of the National Science and Technology Progress Award. You can kill all leeks without pesticides. Let's take a look at this green method of preventing diseases and insect pests.

Control time: Generally in the late spring or summer and autumn season when the temperature is high, choose continuous sunny weather to increase the temperature quickly to achieve the purpose of killing pests.

Cutting off leeks: In order not to let the leaves of leeks be shaded and affect the temperature of the soil irradiated by sunlight, the tall leeks can be cut off along the surface before mulching, as far as possible.

Covered with shed film: A light blue non-drop film with a thickness of 0.10 to 0.12mm is covered on the cut surface of the leek, and the surroundings are tightly sealed to prevent the heat from escaping.

Uncover the film and let the air out: raise the ground temperature of 5 centimeters in the furrow to above 40 ℃ for 3 hours, you can basically kill all the leeks in the underground, then you can open the plastic film for ventilation.

Watering to promote seedlings: After peeling off the film, watering should be carried out in time to promote the sprouting and growth of leeks. Generally, about 20 days later, the leeks fully resumed growth and are completely consistent with other leeks.

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