First, topdressing time Topdressing is generally carried out after the seedlings are out and the cotyledons are flattened. During the day, it is better to have a sunny day between 10 and 12 o'clock.
Second, the topdressing method to apply fertilizer, should be based on nitrogen fertilizer, better with compound fertilizer. It can be applied after watering, or it can be applied with water, or the fertilizer can be dissolved in water. The ratio of fertilizer use to watering is between 0.1:100 and 0.3:100. If the amount of chemical fertilizer applied is too large and the concentration exceeds 5%, it is easy to "burn seedlings". Follow the application of organic fertilizer, use more fully decomposed human excrement or ring fertilizer, first dilute the fertilizer with water 10-20 times, and then pour into the seedbed. Regardless of the application of chemical fertilizers or organic fertilizers, water should be sprayed once after fertilization to wash away the fertilizer attached to the leaves, prevent "burning leaves", and timely ventilation to prevent harmful gases (ammonia, hydrogen sulfide, etc.) Escape the harmful vegetable seedlings. When the temperature of the seedbed is low and the ability of the root of the seedling is weak, the foliar spray can be carried out with 0.1% potassium dihydrogen phosphate solution or 0.3% urea solution.
Huaxian Agricultural Technology Center Luo Junying
Second, the topdressing method to apply fertilizer, should be based on nitrogen fertilizer, better with compound fertilizer. It can be applied after watering, or it can be applied with water, or the fertilizer can be dissolved in water. The ratio of fertilizer use to watering is between 0.1:100 and 0.3:100. If the amount of chemical fertilizer applied is too large and the concentration exceeds 5%, it is easy to "burn seedlings". Follow the application of organic fertilizer, use more fully decomposed human excrement or ring fertilizer, first dilute the fertilizer with water 10-20 times, and then pour into the seedbed. Regardless of the application of chemical fertilizers or organic fertilizers, water should be sprayed once after fertilization to wash away the fertilizer attached to the leaves, prevent "burning leaves", and timely ventilation to prevent harmful gases (ammonia, hydrogen sulfide, etc.) Escape the harmful vegetable seedlings. When the temperature of the seedbed is low and the ability of the root of the seedling is weak, the foliar spray can be carried out with 0.1% potassium dihydrogen phosphate solution or 0.3% urea solution.
Huaxian Agricultural Technology Center Luo Junying
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