How to reduce onion malformation
Luo Ling, senior agronomist of Yangling Qin Hongbao Seed Technology Co., Ltd. said that to reduce onion malformation production, we need to start from the following aspects:
Pay attention to the application of phosphorus and potassium fertilizer fertilizer management, avoid excessive nitrogen fertilizer, so as not to cause excessive growth in the above-ground part of the convulsions or delayed bulb expansion, spring sowing seedlings to maintain soil moisture before and after soil emergence, diligent watering, diligent cultivator, in the growth of leaves The period of peaking and expansion of bulbs is the period when the onion is in need of fertilizer and water, and it should be timely fertilized and watered. Each acre is topped with 15 kg of diammonium phosphate and 3-5 kg ​​of potassium sulfate.
Pest control mainly prevents the damage of mantle, and it is forbidden to use raw manure as fertilizer. Because the mantle has a tendency towards raw manure, adequately cooked organic manure should be used. Evenly, the seed is separated from the fertilizer. The plots where the mantle has occurred must be ground-fed and can be flooded if necessary. However, irrigation should be coordinated with onion growth.
Chemical control can use pesticides with no residue, safe and environment-friendly to water with water.
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