The main points of greenhouse cultivation in autumn and winter
2019-10-26 14:04:13
Early autumn and early winter is the low season for the supply of leeks, and the cultivation of leeks in autumn and winter can be used to obtain higher economic benefits. Its cultivation techniques are as follows:
1. Select fine varieties that can grow continuously without sleeping in winter.
2. Breeding strong roots is the basis for high yields and high returns. Mainly grasp the following measures:
The seedlings transplanted and rooted plants have better, even and higher yields than live plants. Early in the spring after the thawing sowing, before sowing Mushi high-quality farmyard manure 5000 ~ 8000 kilograms, broadcast flat sowing; broadcast after the cover and cover film to protect the earth warming, promote early emergence, the seedlings out of the film after the timely withdrawal.
Seedlings 3 to 4 leaves were moved to greenhouse plots. Usually after 6 to 7 months, after the fruit and vegetables are thawed, the site preparation will be full of organic fertilizer, and the furrows will be spaced 30 to 35 centimeters apart, and the furrow width will be 10 centimeters wide. The pods will be 3 to 4 centimeters long and about 15 per culm. After transplanting, watering promotes the seedlings to keep the soil moist, and timely watering after seeing dry.
The biggest difference between the technical measures for producing leek roots in autumn and winter and the leek after dormancy is that the leek is the most important difference between the lees and the water, promoting its rapid growth, accumulating more nutrients and cultivating the thick roots. Therefore, we do not harvest at the time of summer and autumn, and pay attention to cultivating and weeding, and pay attention to soil drainage during rainy season. Appropriately control the growth before the beginning of autumn to prevent lodging and rot. After the beginning of autumn, to strengthen the supply of water and fertilizer to promote growth, generally 2 to 3 times top dressing, topdressing manure 2000 kg per mu, or 50 kg of diammonium phosphate, or ammonium sulfate 30 to 40 kg plus superphosphate 50 to 100 kg.
3, buckle film appropriate period should be before the local cream. Buckle grows quickly, the peak of production comes early, and it is prone to premature aging. When the buckle is exposed to low temperature and chilling in the open field, it will easily cause the tip to rot. At the same time, if the leek enters into passive dormancy, the growth will be slow after detaining the membrane.
4, after the film management and harvesting. Generally, a knife can be cut before the buckle film, and the film can be buckled immediately after harvesting, which is convenient for operation. If the leek has not yet reached the harvesting standard, the membrane should be detained first to prevent freezing injury, but care must be taken to prevent damage to leek plants. At the beginning of the buckle film, the indoor air temperature is relatively high, and ventilation must be strengthened to prevent leggy. Generally, it should not exceed 25°C during the day. With the decrease in external temperature, the amount of air leakage was gradually reduced, keeping it at 20 to 25°C during the day and 5 to 10°C at night. Afterwards, with the decrease of the external temperature, the grasshoppers and paper quilts will be stamped at night and the cover will be covered early and the thermal insulation performance will be enhanced.
After autumn and winter production buckwheat buckle film still need to top-dressing watering. When the plant height is about 10 cm, 40-50 kg of ammonium sulfate per acre is applied between the rows, watering the ridges, and planting 20 cm. Water 2 to 3 days before harvest. Every time after the water must be strengthened to release air and humidity but care should be taken to prevent it from freezing.
The production of leeks in autumn and winter, if it grows stronger, the harvest period can be extended from October to the second year of March to March, and the roots are harvested for fruit and vegetable production. It should be noted that every time the harvest is carried out, the knife should be shallow so as not to affect the growth of the jaw. But for the last harvest, the deep roots can be cut as much as possible after cutting.
5, to strengthen the prevention and control of pests and diseases. Due to frequent watering in greenhouses and high humidity, attention should be paid to controlling botrytis cinerea: After each watering, it can be prevented by smoked swiftlet. Epidemic disease: At the beginning of the disease, 58% metalaxyl MnZn 500 times or 64% antiviral 400 to 500 times spray is used for prevention and treatment. You can use 90% trichlorfon 1000 times or phoxim 800 times to irrigate and cure.
1. Select fine varieties that can grow continuously without sleeping in winter.
2. Breeding strong roots is the basis for high yields and high returns. Mainly grasp the following measures:
The seedlings transplanted and rooted plants have better, even and higher yields than live plants. Early in the spring after the thawing sowing, before sowing Mushi high-quality farmyard manure 5000 ~ 8000 kilograms, broadcast flat sowing; broadcast after the cover and cover film to protect the earth warming, promote early emergence, the seedlings out of the film after the timely withdrawal.
Seedlings 3 to 4 leaves were moved to greenhouse plots. Usually after 6 to 7 months, after the fruit and vegetables are thawed, the site preparation will be full of organic fertilizer, and the furrows will be spaced 30 to 35 centimeters apart, and the furrow width will be 10 centimeters wide. The pods will be 3 to 4 centimeters long and about 15 per culm. After transplanting, watering promotes the seedlings to keep the soil moist, and timely watering after seeing dry.
The biggest difference between the technical measures for producing leek roots in autumn and winter and the leek after dormancy is that the leek is the most important difference between the lees and the water, promoting its rapid growth, accumulating more nutrients and cultivating the thick roots. Therefore, we do not harvest at the time of summer and autumn, and pay attention to cultivating and weeding, and pay attention to soil drainage during rainy season. Appropriately control the growth before the beginning of autumn to prevent lodging and rot. After the beginning of autumn, to strengthen the supply of water and fertilizer to promote growth, generally 2 to 3 times top dressing, topdressing manure 2000 kg per mu, or 50 kg of diammonium phosphate, or ammonium sulfate 30 to 40 kg plus superphosphate 50 to 100 kg.
3, buckle film appropriate period should be before the local cream. Buckle grows quickly, the peak of production comes early, and it is prone to premature aging. When the buckle is exposed to low temperature and chilling in the open field, it will easily cause the tip to rot. At the same time, if the leek enters into passive dormancy, the growth will be slow after detaining the membrane.
4, after the film management and harvesting. Generally, a knife can be cut before the buckle film, and the film can be buckled immediately after harvesting, which is convenient for operation. If the leek has not yet reached the harvesting standard, the membrane should be detained first to prevent freezing injury, but care must be taken to prevent damage to leek plants. At the beginning of the buckle film, the indoor air temperature is relatively high, and ventilation must be strengthened to prevent leggy. Generally, it should not exceed 25°C during the day. With the decrease in external temperature, the amount of air leakage was gradually reduced, keeping it at 20 to 25°C during the day and 5 to 10°C at night. Afterwards, with the decrease of the external temperature, the grasshoppers and paper quilts will be stamped at night and the cover will be covered early and the thermal insulation performance will be enhanced.
After autumn and winter production buckwheat buckle film still need to top-dressing watering. When the plant height is about 10 cm, 40-50 kg of ammonium sulfate per acre is applied between the rows, watering the ridges, and planting 20 cm. Water 2 to 3 days before harvest. Every time after the water must be strengthened to release air and humidity but care should be taken to prevent it from freezing.
The production of leeks in autumn and winter, if it grows stronger, the harvest period can be extended from October to the second year of March to March, and the roots are harvested for fruit and vegetable production. It should be noted that every time the harvest is carried out, the knife should be shallow so as not to affect the growth of the jaw. But for the last harvest, the deep roots can be cut as much as possible after cutting.
5, to strengthen the prevention and control of pests and diseases. Due to frequent watering in greenhouses and high humidity, attention should be paid to controlling botrytis cinerea: After each watering, it can be prevented by smoked swiftlet. Epidemic disease: At the beginning of the disease, 58% metalaxyl MnZn 500 times or 64% antiviral 400 to 500 times spray is used for prevention and treatment. You can use 90% trichlorfon 1000 times or phoxim 800 times to irrigate and cure.
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