Organic fertilizer is a necessary condition for growing crops, and it is very important to plant lotus roots. Applying the base fertilizer can supply the nutrients needed for the whole growth period of the lotus root, and has the effect of improving the soil and fertilizing the soil. The amount of the base fertilizer in the field should be determined according to the soil fatness and thinness. Most of the planted lotus roots are selected from fertile soil, rich in organic matter, and convenient for irrigation and drainage. In combination with the whole land, 2500-3000 kg of fertile farmyard manure and 60-80 kg of general-purpose compound fertilizer are applied per mu, and calcium, boron, zinc, etc. are applied. Fertilizer, then plow 20 to 30 cm deep, cultivate fine and flat, put 3 to 5 cm shallow water for use.
Lotus root needs to be topdressed 2 to 3 times throughout the growing season. For the first time, when the plant has 1 or 2 leaves (25 to 30 days after planting), 15 kg of urea per mu or 1500-2000 kg of decomposed farmyard manure and 7.5 to 10 kg of potassium sulfate; the second time There are 5 to 6 pieces of lobes (40 to 50 days after planting), and 20 to 25 kg of high-nitrogen and potassium compound fertilizer per acre;
The third time is applied at the end of the emergence of the leaves, at this time began to scab, apply 15 to 20 kg of high-potassium compound fertilizer per acre, or apply about 2000 kg of decomposed human and animal manure.
When fertilizing, choose sunny and windless weather. In the morning or evening, put shallow water before each fertilization, let the fertilizer dissolve into the water, and then pour water to the original depth two days after fertilization. After topdressing, pour water to rinse the lotus leaves. For deep-water polders, it is best to make a fat mud group to prevent the fertilizer from floating. Be careful not to step on the lotus whip when fertilizing, so as not to affect the scarring.
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