First, the symptoms of premature aging The most severe symptoms of premature aging of cucumber 1-3 months, the symptoms are: 1, flower pressure top, melon pressure top; 2, growth point shrinks, down hook head; 3, when the growth point disappears in serious; 4, pick melon node Close to the growing point too close; 5,50 cm lower part of the deformed melon; 6, serious melons; 7, whip bubble type, the whole plant from the bottom up in turn after the flowering, the small melons are not dilated, into a melon slowly; 8 , parachute-like leaves, leaf wrinkles; 9, uneven, small and round leaves, there is a bubble disease; 10, shallow or no lack of engraved carved.
Second, several measures for the prevention and treatment of premature senility are centered on "root preservation, protection of leaves, and promotion of melons" and supportive management measures are in place to prevent premature aging.
1. Deeply turn the land and apply enough base fertilizer. The spring and spring seasons require multiple irrigations and better soil permeability. Therefore, high-quality chickens, pigs, farmyard fertilizers of 24 square meters, 80 kg of diammonium phosphate, 50 kg of potassium sulfate, or 100 kg of high-efficiency compound fertilizer should be used as base fertilizer per acre. Supplemented with 1,000 kg of wheat straw fertilizer, it was applied three times with deep-spotting soil preparation within two months before sowing. The deep tumbling should not be less than 50 cm. The first two applications should be 70% and the third should be 20%. When transplanting, 10% of the vines should be applied in the ditch, and the first half of the month should be irrigated to reduce the damage.
2, light, temperature and air conditioning. Clean the surface of the membrane every day, sunny day when the sun rises, pull in order to benefit the light. When cold currents invade, the greenhouse temperature is not lower than 9-10 degrees Celsius, and the ground temperature is not lower than 13 degrees Celsius. If there are more continuous cloudy days in January and the temperature difference between day and night is small, the night temperature should be reduced appropriately. Before the cold weather arrives, try to increase the temperature. For a long time, the eyes should strictly control the temperature, no more than 26 degrees Celsius at noon. After the ground temperature rises, it gradually warms up to the normal temperature, otherwise it is prone to premature aging. After entering March, the indoor temperature should be controlled between 28-32 degrees Celsius during the day and 11-13 degrees Celsius in the morning. Use ventilation to supplement carbon dioxide gas and emit harmful gases. After entering the melon period, the carbon dioxide was artificially supplemented for about two hours before being pulled.
3, growth and management of water and fertilizer. Planting seedling age 20-30 days, that is, two leaves one heart or three leaves pouring water once, to 55% of the root melon sit and then watering. Into the period of ripe melon, topdressing with rotten pigs, chickens, human feces and urine catch up with sunny flood irrigation, supplemented with nitrogen, phosphorus and potassium ternary compound fertilizer, or diammonium phosphate plus potassium sulfate (or potassium dihydrogen) amount, or vegetables Organic compound fertilizer.
In the early days of the melon, the fertilization water is usually applied once every 8 days. Each acre does not exceed 26 kg at a time. The melon period does not exceed 30 kilograms each time, and it is applied once every 15 days. After entering March, fresh water and fertilizers are poured alternately, each time less than 20 kilograms per acre. Every time water is added, trace elements, liquid fertilizer, and hormones are added to enhance the activity of root enzymes. Commonly used are high-efficient complex fertilizer, double-effect micro-fertilizer, vitality element, tianfengsu, green wind 95 and other alternate flushing, or supplemented by foliar spray. In the period of entering the guaranty period, it must be rushed to the same size.
4. At the end of March and early April, remove the mulching between small rows.
Second, several measures for the prevention and treatment of premature senility are centered on "root preservation, protection of leaves, and promotion of melons" and supportive management measures are in place to prevent premature aging.
1. Deeply turn the land and apply enough base fertilizer. The spring and spring seasons require multiple irrigations and better soil permeability. Therefore, high-quality chickens, pigs, farmyard fertilizers of 24 square meters, 80 kg of diammonium phosphate, 50 kg of potassium sulfate, or 100 kg of high-efficiency compound fertilizer should be used as base fertilizer per acre. Supplemented with 1,000 kg of wheat straw fertilizer, it was applied three times with deep-spotting soil preparation within two months before sowing. The deep tumbling should not be less than 50 cm. The first two applications should be 70% and the third should be 20%. When transplanting, 10% of the vines should be applied in the ditch, and the first half of the month should be irrigated to reduce the damage.
2, light, temperature and air conditioning. Clean the surface of the membrane every day, sunny day when the sun rises, pull in order to benefit the light. When cold currents invade, the greenhouse temperature is not lower than 9-10 degrees Celsius, and the ground temperature is not lower than 13 degrees Celsius. If there are more continuous cloudy days in January and the temperature difference between day and night is small, the night temperature should be reduced appropriately. Before the cold weather arrives, try to increase the temperature. For a long time, the eyes should strictly control the temperature, no more than 26 degrees Celsius at noon. After the ground temperature rises, it gradually warms up to the normal temperature, otherwise it is prone to premature aging. After entering March, the indoor temperature should be controlled between 28-32 degrees Celsius during the day and 11-13 degrees Celsius in the morning. Use ventilation to supplement carbon dioxide gas and emit harmful gases. After entering the melon period, the carbon dioxide was artificially supplemented for about two hours before being pulled.
3, growth and management of water and fertilizer. Planting seedling age 20-30 days, that is, two leaves one heart or three leaves pouring water once, to 55% of the root melon sit and then watering. Into the period of ripe melon, topdressing with rotten pigs, chickens, human feces and urine catch up with sunny flood irrigation, supplemented with nitrogen, phosphorus and potassium ternary compound fertilizer, or diammonium phosphate plus potassium sulfate (or potassium dihydrogen) amount, or vegetables Organic compound fertilizer.
In the early days of the melon, the fertilization water is usually applied once every 8 days. Each acre does not exceed 26 kg at a time. The melon period does not exceed 30 kilograms each time, and it is applied once every 15 days. After entering March, fresh water and fertilizers are poured alternately, each time less than 20 kilograms per acre. Every time water is added, trace elements, liquid fertilizer, and hormones are added to enhance the activity of root enzymes. Commonly used are high-efficient complex fertilizer, double-effect micro-fertilizer, vitality element, tianfengsu, green wind 95 and other alternate flushing, or supplemented by foliar spray. In the period of entering the guaranty period, it must be rushed to the same size.
4. At the end of March and early April, remove the mulching between small rows.
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