1. It is not suitable to apply too much chlorine-containing fertilizer
Potatoes should not be applied with too much chlorine-containing fertilizers. When the concentration reaches a certain level in the current period, it will be toxic to the plant roots. It can reduce the starch and sugar content of the product, affect the yield and quality, and even cause the crop to die. Therefore, use ammonium chloride, potassium chloride and other fertilizers with caution.
2. Apply organic fertilizer to base fertilizer
Use commercial organic fertilizer for base fertilizer. For example, ordinary farm manure must be composted and decomposed at high temperature to kill grass seeds and pathogenic bacteria. If conditions permit, the compost can be aged for 1-2 months; the fertilizer used in base fertilizer should be away from seed potatoes 3-5 cm, so as not to affect the germination and emergence of seed potatoes.
3. The timing of foliar fertilization
For foliar spraying of trace elements and Diguozhuang Ti Ling, it is better to spray before 10 am or after 3 pm. Spray the seedlings for the first time after the height of 30 cm, and then spray the second and third times every 7 days. Improve the nutrient absorption capacity and swelling vitality of underground fruits, and promote the growth rate.
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