In the cold winter, peony flowering in greenhouses or plastic greenhouses is based on the growth and development characteristics of different peony varieties, artificially regulating environmental factors to meet the requirements of different stages of peony growth and development, coupled with timely and appropriate Hormonal regulation, so as to achieve the purpose of flowering, the main technical points are:
First, regulate temperature and humidity
1, initial management. The early temperature is 10-15°C during the day and 6-8°C in the evening. After 7 days, the daytime temperature can be adjusted to 12-16°C and 8-10°C in the evening. The relative humidity of the air can be controlled at 50-70% during the day and 80-90% at night. After 8 to 10 days, the flower buds are germinating and shiny. 12-14 days, you can bud. Management during this period is crucial for the growth of peony in the future.
2. Mid-term management. After peony buds, the daytime temperature can be controlled at 16-18°C and 10-12°C at night. About 20 days to enter the "bud period." During this period, buds are very sensitive to temperature changes, often due to poor aversity of young buds and abortion, so the temperature should be relatively stable. The relative humidity of air is kept at 50-60% during the day and 70-90% at night. Do not allow the leaves and buds to be exposed to water for a long time so as to avoid infecting the bacteria. At this time, plants such as carbendazim and thiophanate-methyl may be used to spray the plants. Clear aerosol sterilization. It is worth noting that at this time the young buds are tender and the drug concentration should not be too high.
About 25 days, the plants entered the leaf stage. The temperature can be controlled at 18-20°C during the day and 12-14°C at night. When the temperature is high at noon, it can be ventilated at the top of the greenhouse to exercise the plant's resistance to stress. The length of ventilation time should be determined according to the indoor temperature. Do not ventilate and cool down under the greenhouse to avoid cold air directly invading the plants and stop bud development, commonly known as "cold." Conditions can be added in the greenhouse air circulation facilities to promote indoor air circulation, improve the transpiration of the leaves, the peony leaves, put leaves, reduce the disease are good.
About 35 days, the buds enter the “Ping Lei periodâ€. At this time, the flower buds are strong in stress resistance, gradually adapting to changes in temperature, as long as the temperature does not change too much, basically does not affect the rate of flowering, then according to the scheduled flowering period , Reasonably grasp the temperature. The daytime temperature can generally be controlled at 18-20°C and 10-16°C at night. During this period, the temperature in the greenhouse is high and the humidity is high. Stalk rot often occurs. To prevent the occurrence of this condition, 600-800 times of Rhizoctonia or 10% thiophanate-methyl WP can be used for spraying.
3, late management. About 40 days, the peony enters the heavy pupa period and enters the doubling period in about 45 days. At this time, the temperature can be properly controlled according to the flowering time. Even if stored in a cold room at 2-4°C, it can still normally bloom after 10-20 days. .
Second, artificial supplemental lighting
Peony is a long-day plant. Due to the short sunshine hours and weak light intensity in winter, it often affects the flowering rate and growth potential. Insufficient light at the beginning can make the stalk grow longer and thinner, and the flowers droop; when the light is insufficient in the late period, it can affect the coloration and reduce the quality of flowering. Therefore, the light should be supplemented in time to meet the requirements of the growth and development of light. The specific method is to use fluorescent lamps. Or incandescent lamp to supplement the light source of peony, fill the light all day long, sunny in the early morning and evening fill light, light before the bud every day to add 3 hours, the average daily illumination is 4045 lux, bud show leaf period plus light for 5 hours The average daily illumination of 5150 lux, the reopening of the leaf, the daily light of 7 hours, and the daily average illumination of 5330 lux, can make the leaves large and fat, the flowers develop well, and the flowers are pure and vivid.
Third, the preparation of the matrix, make up the water
1, the preparation of the matrix. Peony likes fertile, loose sandy soil land, pay attention to its characteristics in basin soil selection, generally selected after the fine washed slag, peat soil, a preparation, this matrix permeability, water seepage ability, Fertility is sufficient, and the planted peony has many new roots. It does not rot, grows well and grows strong.
2, make up fertilizer water. Initial management: The early stage should be irrigated, and then watered in accordance with the degree of wetness of the basin soil, usually 7-10 days. In combination with watering, the fertilizing material can be recovered, and generally it is diluted with fully cooked cake fat, oil residue or potassium dihydrogen phosphate. After the leaf-leafing period, fertilizers can be applied outside the peony root. Phosphorus, potash, and trace fertilizers are still used, and nitrogen fertilizer is less applied. Potassium dihydrogen phosphate is generally controlled within 0.3%. The principle of less application and diligent application is required. Spray once every 3-5 days. When spraying, both back and leaf surfaces should be sprayed thoroughly to avoid dripping. The time should be in the afternoon. Combine spray-fertilizer with spray fungicide to prevent the occurrence of diseases.
First, regulate temperature and humidity
1, initial management. The early temperature is 10-15°C during the day and 6-8°C in the evening. After 7 days, the daytime temperature can be adjusted to 12-16°C and 8-10°C in the evening. The relative humidity of the air can be controlled at 50-70% during the day and 80-90% at night. After 8 to 10 days, the flower buds are germinating and shiny. 12-14 days, you can bud. Management during this period is crucial for the growth of peony in the future.
2. Mid-term management. After peony buds, the daytime temperature can be controlled at 16-18°C and 10-12°C at night. About 20 days to enter the "bud period." During this period, buds are very sensitive to temperature changes, often due to poor aversity of young buds and abortion, so the temperature should be relatively stable. The relative humidity of air is kept at 50-60% during the day and 70-90% at night. Do not allow the leaves and buds to be exposed to water for a long time so as to avoid infecting the bacteria. At this time, plants such as carbendazim and thiophanate-methyl may be used to spray the plants. Clear aerosol sterilization. It is worth noting that at this time the young buds are tender and the drug concentration should not be too high.
About 25 days, the plants entered the leaf stage. The temperature can be controlled at 18-20°C during the day and 12-14°C at night. When the temperature is high at noon, it can be ventilated at the top of the greenhouse to exercise the plant's resistance to stress. The length of ventilation time should be determined according to the indoor temperature. Do not ventilate and cool down under the greenhouse to avoid cold air directly invading the plants and stop bud development, commonly known as "cold." Conditions can be added in the greenhouse air circulation facilities to promote indoor air circulation, improve the transpiration of the leaves, the peony leaves, put leaves, reduce the disease are good.
About 35 days, the buds enter the “Ping Lei periodâ€. At this time, the flower buds are strong in stress resistance, gradually adapting to changes in temperature, as long as the temperature does not change too much, basically does not affect the rate of flowering, then according to the scheduled flowering period , Reasonably grasp the temperature. The daytime temperature can generally be controlled at 18-20°C and 10-16°C at night. During this period, the temperature in the greenhouse is high and the humidity is high. Stalk rot often occurs. To prevent the occurrence of this condition, 600-800 times of Rhizoctonia or 10% thiophanate-methyl WP can be used for spraying.
3, late management. About 40 days, the peony enters the heavy pupa period and enters the doubling period in about 45 days. At this time, the temperature can be properly controlled according to the flowering time. Even if stored in a cold room at 2-4°C, it can still normally bloom after 10-20 days. .
Second, artificial supplemental lighting
Peony is a long-day plant. Due to the short sunshine hours and weak light intensity in winter, it often affects the flowering rate and growth potential. Insufficient light at the beginning can make the stalk grow longer and thinner, and the flowers droop; when the light is insufficient in the late period, it can affect the coloration and reduce the quality of flowering. Therefore, the light should be supplemented in time to meet the requirements of the growth and development of light. The specific method is to use fluorescent lamps. Or incandescent lamp to supplement the light source of peony, fill the light all day long, sunny in the early morning and evening fill light, light before the bud every day to add 3 hours, the average daily illumination is 4045 lux, bud show leaf period plus light for 5 hours The average daily illumination of 5150 lux, the reopening of the leaf, the daily light of 7 hours, and the daily average illumination of 5330 lux, can make the leaves large and fat, the flowers develop well, and the flowers are pure and vivid.
Third, the preparation of the matrix, make up the water
1, the preparation of the matrix. Peony likes fertile, loose sandy soil land, pay attention to its characteristics in basin soil selection, generally selected after the fine washed slag, peat soil, a preparation, this matrix permeability, water seepage ability, Fertility is sufficient, and the planted peony has many new roots. It does not rot, grows well and grows strong.
2, make up fertilizer water. Initial management: The early stage should be irrigated, and then watered in accordance with the degree of wetness of the basin soil, usually 7-10 days. In combination with watering, the fertilizing material can be recovered, and generally it is diluted with fully cooked cake fat, oil residue or potassium dihydrogen phosphate. After the leaf-leafing period, fertilizers can be applied outside the peony root. Phosphorus, potash, and trace fertilizers are still used, and nitrogen fertilizer is less applied. Potassium dihydrogen phosphate is generally controlled within 0.3%. The principle of less application and diligent application is required. Spray once every 3-5 days. When spraying, both back and leaf surfaces should be sprayed thoroughly to avoid dripping. The time should be in the afternoon. Combine spray-fertilizer with spray fungicide to prevent the occurrence of diseases.
Levamisole (levamisole) is a kind of broad spectrum displacement intestinal worm medicine, is mainly used to drive the worm and worm.Levamisole hydrochloride powder INDICATIONS
Antiparasitic, the product can be used to get rid of animal gastrointestinal nematodes, lung filariasis and pig dioctophymosis.
ADMINISTRATION AND DOSAGE
Calculated on levamisole hydrochloride.
Cattle, sheep, goats and pigs: 7.5mg/Kg body weight;
Dogs and cats: 10mg/Kg body weight;
Poultry: 25mg/kg body weight.
CONTRAINDICATION
Use cautiously in animals with high heartworm microfilaria burdens. Reactions are possible from heavy kill rate of microfilaria.
SPECIAL WARNINGS
Use cautiously in horse and do not use in camel.
Keep out of reach of children.
Levamisole
Levamisole Injection,Levamisole Solution,Levamisole Tablet,Levamisole Powder
Hebei Kexing Pharmaceutical Co., Ltd. , https://www.kexingpharma.com