Spring, autumn, autumn and winter rapeseed

The spring and spring lotus seedlings in water fields, the autumn and vegetable seedlings are used for raising the loach, and the annual four-maturity cultivation mode for winter-planted rapeseed. Generally, 600 kg to 700 kg, 1,000 kg to 1200 kg, and 150 kg of commercial loach can be harvested per mu per year. About 150 kilograms to 200 kilograms of oilseed rape, the cumulative output value of more than 4,000 yuan per mu, more than 2000 yuan per mu. Now introduce technical points for the reference of farmers.

I. Field conditions

Select a field with sufficient sunlight, strong water retention, easy management, and irrigation and drainage conditions. Dig a trench around the field to make a well-drained trench. The width and depth of each trench should be about 1 meter. The earthworms are raised to 0.8 meters and compacted. In the appropriate positions on both ends of the field, the inlet and outlet are installed with a 30-cm-diameter pipe, and the end of the pipe near the field is set with a 40-mesh gauze. Water and prevent muddy escaping. Requires no water pollution from industrial sources.

Second, the mouth arrangement

In mid-March, the use of winter free field to cultivate lotus seedlings, about 180 kg per mu of field planting, transplanting in mid-April. In early August, it was harvested and transplanted. The rough field was transplanted and planted. The plant spacing was 50 cm, and the spacing was 80 cm. About 1800 acres were planted. At the same time, the size of the muddy seedlings with a length of 3 cm to 5 cm is about 40 kg. At the end of November, the mud will be harvested and the mud will be induced into the ditch until the New Year's Day and Spring Festival. Afterwards, the land was transplanted and rapeseed was planted. The width of the plant was no more than 3 meters and the row spacing was 40 centimeters. The spacing between the plants was 20 centimeters. Harvested in early April. Before transplanting rape, they must be nursed 30 days in advance.

Third, fertilization standards

Lotus roots require full application of basic fertilizer and seedlings in appropriate conditions. After harvesting, combined with coarse whole fields, Mushi rotted pig manure and other manure fertilizers such as 1500 kg of urea, 20 kg of urea and 30 kg of compound fertilizer as base fertilizer. After the beginning of autumn, 150 kg of ash was planted in Mushi to form bulbs. Before the white dews, top-dressing bulbs expand fertilizer, and Mushi 10 kg of urea. Rape generally does not require base fertilizer.

Fourth, Tianshui Management

During the growth period of lotus roots, the management of field water begins from shallow to deep and then from deep to shallow. After Putian sets up the loach, it changes the water every 10 days or so from the middle and late August, changing the water 10 centimeters each time, and maintaining the water depth of the field about 15 centimeters. Gradually reduce the water level after the weather turns cold. From mid-September to the end of October, maintain a water depth of 7 cm to 10 cm. Starting in early November, gradual drainage can be kept moist.

Fifth, mud feeding

After the loach seedlings are released, they are fed plant-based feeds such as rice bran, wheat bran, barley flour, and corn meal, and farm-fertilizers such as pigs, cattle, chickens, and human feces that have been fermented and decomposed at a water temperature of 25°C to 27°C. When the loach appetite is strong, the daily feeding amount is 10% of the whole muddy body weight, and the water temperature is 4% to 8% at 15°C to 24°C. After the water temperature drops, the feed should be mainly animal feed, such as silkworm meal, pig blood meal, etc., and it should be eaten on the day of feeding on the same day. When the water temperature is lower than 5°C or higher than 30°C, feed or feed should be stopped.

Sixth, control pests

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. In general, 4 kg of salt per acre is used every 15 days, and the whole field is splashed once to improve the water quality. Every 10 days or so, mu bleaching powder 100 grams, or quicklime 15 kilograms, or 50 grams of crystal trichlorfon, disinfected and disinfected with water all over the field, can also be used interchangeably, the effect is better. At the same time, oxytetracycline was crushed into powder and mixed in the feed to prevent damage to the mud. For the prevention and control of diseases and pests of lotus root and lotus root, we must use high-efficiency and low-toxicity pesticides that are harmless to loach.

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