The first step is to plant lotus roots in spring paddy fields, then grow into Sagittarius, and turn them into muddy shoots along the field, and then transplant the oilseed rape at the end of the autumn. Generally, 600 to 700 kilograms of fresh tares per acre, 1000 to 1200 kilograms of arrowheads, and 100 to 150 kilograms of loach should be used. 150 to 200 kilograms of rapeseed.
The conditions of the plots were selected to be sunny, well-watered and well-maintained. The trenches were dug around the trenches. The ditch was 1.5 meters wide and 1 meter deep. Tian Hao is raised to 0.8 meters. At the two ends of the field block, an inlet and a outlet with a diameter of 30 cm were set up, blocked by a 40-mesh net yarn, and used to filter water and prevent muddy escaping.
The cornices are arranged in mid-April and are planted in 150-200 kg per acre. In early August, harvesting and transplanting were conducted. The rough field was transplanted with Sagittaria seedlings, with a spacing of 50 cm and a row spacing of 80 cm. Planted 2000-2500 plants per acre. At the same time, 30 to 50 kilograms of mud for 3 to 5 centimeters per mu are to be cultivated. At the end of November, soil was turned to harvest Sagittaria and Loach. The mud in the ditch can be left for planting. Afterwards, the ridge was used to plant rapeseed, and the ridge width was no more than 3 meters. The transplanting spacing was 16 centimeters and the spacing was 33 centimeters.
Fertilizer standard lotus root requires full application of base fertilizer and timely fertilizer. The amount of basal fertilizer accounted for more than 60% of the total amount of fertilizer, 1,500 kg of pig manure and 15 kg of urea per acre. Top dressing two times, when the lotus leaves began to appear a few leaves when the application of urea 8 kg per mu, when the lotus leaf basically grows over the surface when applying 15 kg of urea per acre. Before harvesting water, 1300 kg of pig manure and 15 kg of urea were used as base fertilizer for each acre. After the beginning of autumn, 100-150 kilograms of wood ash per mu will be used to facilitate Sagittaria's formation of bulbs. "Bai Lu" before the application of ball fertilizer, 7 to 10 kg of urea per acre. Rape does not apply base fertilizer.
Tianshui Management The lotus-seedling management during the growing period starts from shallow to deep and then from deep to shallow. Keep 7 cm of shallow water within 15 days after planting, and gradually deepen the water layer as the temperature rises, but the water depth should not exceed 0.5 meters. From the beginning of July, the water level will be lowered to promote scab. After Sagittarius had cultivated mud, it changed its water every 10 days from the middle of August to the next, changing the water every time by 10 centimeters and keeping the surface water depth 15 centimeters. After the weather turns cold, it gradually reduces the water level. From mid-September to the end of October, the water depth is 7 to 10 cm.
After the seedlings are fed into the seedlings, they are fed with feeds based on plant feed such as bran, barley flour, and corn flour, and the daily feeding amount is 4% of the body weight of the field waxes. After the temperature of the water drops, the feed is mainly composed of animal feed such as silkworm cocoon powder and pig blood. The amount of daily feeding is 8% to 10% of the body weight of the field frog and it is required to finish the day of feeding. When the water temperature is lower than 5°C or higher than 30°C, do not feed or feed less.
Insect pest control insect pests are golden worms and aphids, with dimethoate 1500 ~ 2000 times liquid spray control. Due to muddy feeding, Bao Gan Tian rarely suffers from pests. Sagittaria disease is controlled by high-efficiency, low-toxic, low-residue pesticides such as carbendazim. Field weeds are removed manually. Do not use herbicides. From the end of August to October, the prevention and treatment of the mud loach disease will be completed. Every 10 to 15 days, bleaching powder (1 mg/L) or quicklime (15 mg/L), crystal trichlorfon (0.5 mg/L) is disinfected once, and terramycin or furazolidone baits are used for feeding. disease. In addition, to prevent rats, water snakes, ducks, etc. into the field harm the loach.
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