Point 1. Choose high quality lotus root seed:
You can use the large purple lotus root varieties of medium-cooked and main cookware 4-5 knots.
Point 2: Disinfect the seedlings:
Choose the main scorpion that has strong buds, has 2 to 3 knots, and weighs more than 0.5 kilograms, or use large scorpions for seedlings. As long as the hoe is dug up, it should be planted as early as possible, and the amount of seed used per mu is 300-400 kg. Before planting, spray the seed cockroach with 70% thiophanate-methyl WP 800 times, suffocate for 24 hours, and the drug solution is basically dried and then planted.
Point 3: Treatment of Putian:
It is convenient to choose irrigation and drainage, stable water level and fertile soil for field planting. In the spring, 5,000 kilograms of fermented organic fertilizer per mu is applied. In the first half of the planting period, 50 kg of special compound fertilizer and 150 kg of quicklime are applied per mu.
Point 4, choose the lotus root colonization time:
The colonization time of lotus root is suitable for planting in the middle of April, with a row spacing of 2 to 2.5 meters and a hole spacing of 0.7 to 1 meter. Each hole is planted with 1 main or 2 branches. After planting, the field maintains a water layer of 3 to 5 cm. After the leaves are formed, the water layer is gradually deepened to 20 to 30 cm. After the emergence, the leaves are gradually returned to the water layer to 15-20 cm.
Point 5: Appropriate topdressing for Putian in time: Co.,
New Putian topdressing 2 times, the first time on May 20-30, 50 kg of ammonium bicarbonate, 25 kg of urea, 50 kg of compound fertilizer or compound fertilizer of Putian; the second time on June 20-30 Apply 40 kg of urea per mu and 50 kg of special compound fertilizer for Putian. Planting fertilizer for 1 year or more in Putian for 1 year, applying 50 kg of urea per mu around 50 and 50-75 kg of special compound fertilizer for Putian.
Key points 6. Promptly control pests and diseases in Putian: Co.,
Pay attention to the prevention and control of stagnation and roots. The prevention and control of stagnation mainly takes the rotation of crops, selects disease-free fields and disease-free plantings, removes the dead leaves of the field after harvesting, and appropriately increases the application of phosphorus and potassium fertilizers in the middle and late stages. Control the roots of Golden Flower worms, in the middle and late May, use 5% Regent suspension 100-150 ml (100 ml of fresh Putian, 150 ml of old Putian) and add 1 kg of water to dilute, mix 10 kg of fine soil evenly. Give alms.
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