Key points of planting poinsettia 'Sunshine'

Production scene of Yihua Horticulture 'Sunshine'

A new member of the poinsettia family has been added this year, and a new variety, 'Sunshine', launched by Guangzhou Yihua Horticulture Co., Ltd., will be on the market soon. The characteristic of 'Sunshine' is very prominent, with high crown uniformity and good branching. Compared with the main variety of Yihua horticulture 'Golden Award', 'Sunshine' grows faster, and its finished product is 7 to 10 days earlier than 'Golden Award'. It takes only 90 days for 15 cm pot diameter to grow to the finished product from the seedling to the pot. It has strong cold resistance and can grow normally even if the temperature is as low as 12 ℃. Recently, the reporter interviewed Zhou Shiliang, general manager of Guangzhou Yihua Horticulture Co., Ltd., and he explained in detail the main points in the production process of 'Sunshine'.

Illumination control

In the seedling just on the pot stage, the root of the seedling is relatively fragile, so it is necessary to reduce the light intensity. In the first week, the top of the greenhouse should be covered with a 75% shade net. If the seedlings enter the shed in summer, they should sprinkle some water on the ground to increase air humidity. When the root of the seedling is not perfect, excessive light will cause water loss, dehydration and death of the seedling. One week after the seedlings entered the shed, it was best to increase the light properly and keep it within 20,000 lux.

About 15 days, it is necessary to observe whether the root of the plant grows to the bottom of the basin, and if it reaches the bottom of the basin, the heart can be removed. After picking the heart, the light should be controlled within 15000 lux and shaded for two consecutive days. After heart removal, the plants have wounds, so remember not to expose yourself to the sun at this time. After shading for two days, increase the light moderately, keeping it between 15000 and 20, 000 lux. After the seedlings grow in the pot for 45 days, the plant begins to promote flowers when the crown is about 25 cm. If it is in summer, it needs to be shaded, and in winter, it is necessary to close the lights, that is, stop adding light at night to ensure that the illumination time of the plant does not exceed 12 hours. After the bract changed color, the light was controlled within 15000 lux, and the finished product was finished in 50 days.

Temperature and humidity management

The best growth temperature of 'Sunshine' is between 18 ℃ and 28 ℃, and the lowest temperature should not be lower than 12 ℃, otherwise it will slow down the plant growth and prolong the time of the finished product. In the seedling stage, the temperature should not be lower than 15 ℃ at night, otherwise the plant growth rate should slow down, and it should be controlled below 32 ℃ during the day, and the greenhouse should be well ventilated and the humidity should not be less than 50%. After coring, the temperature in the greenhouse had better be kept within 30 ℃, and the humidity should not be less than 65%, because if the light is too strong, the temperature is too high, and it is too dry, it will affect the germination and growth of lateral buds of the plant.

During the flowering period, the night temperature must be below 24 ℃. The flowering stage of poinsettia is also called induction cycle, which refers to the time it takes for the finished flower to change color. During the induction period, if the temperature is higher than 24 ℃, it will affect the flowering, flowering and growth of the plant. At this stage, we should also pay attention to reduce the humidity, not more than 70%, otherwise it is prone to diseases such as gray mold. During the induction cycle, the temperature should be controlled between 16 ℃ and 18 ℃, so that the plant color will be more bright. After the bracts changed color, the temperature should be controlled between 15 ℃ and 30 ℃.

Water and fertilizer management

Small seedling stage just on the basin, the first watering only water, and one-time watering. In the process of the growth of poinsettia, as long as it is watered, it must be watered thoroughly at one time, and only half of it must be watered. Wait for the root of the plant to grow to the bottom of the basin and fertilize for the first time. Nitrogen, phosphorus and potassium fertilizers are proportioned according to the proportion of 20 "9" 20 or 20 "10" 20, and diluted 1200 times into water-soluble fertilizer before use. Then observe the plant growth, when the lack of water, watering, each watering at the same time fertilization. After the plant entered the peak growth period, the fertilization concentration could be increased to 600 times or 700 times. After the bracts were red through two pieces, the fertilization concentration was appropriately reduced and diluted by 800x to 1000 times. The pH value should be kept between 5.8 and 6.2 throughout the growth of Sunshine.

Pest control, mainly to prevent and control diseases and insect pests, spraying insecticides once a week and fungicides every two weeks. The most prominent pest of 'Sunshine' is whitefly, which has more prosperous periods of plant growth. It only takes 7 to 10 days for whitefly to grow to adult from egg to adult, so the focus is on prevention. Once the pest is serious, plants can only be destroyed. In the spring seedling stage, growers should also pay attention to mosquito larvae, because mosquito larvae can damage the roots when they are not strong enough. In this regard, a layer of lime can be sprinkled on the floor of the greenhouse to reduce the humidity of the greenhouse, inhibit the reproduction of pests, and spray conventional drugs.

The most serious disease of 'Sunshine' is Botrytis cinerea, which focuses on prevention. The humidity in the greenhouse should not be too high, and it should be well ventilated. Once the disease occurs, it should be treated with conventional medicine. In the production process, we should also pay attention to ensure the growth space between the plants, do not let the leaves touch each other, if too crowded, it will lead to plant overgrowth.

Key points of planting poinsettia 'Sunshine'

Production scene of Yihua Horticulture 'Sunshine'

China Garden Network, March 30: a new member of the poinsettia family has been added this year, and a new variety, 'Sunshine', launched by Guangzhou Yihua Horticulture Co., Ltd., will be on the market soon. The characteristic of 'Sunshine' is very prominent, with high crown uniformity and good branching. Compared with the main variety of Yihua horticulture 'Golden Award', 'Sunshine' grows faster, and its finished product is 7 to 10 days earlier than 'Golden Award'. It takes only 90 days for 15 cm pot diameter to grow to the finished product from the seedling to the pot. It has strong cold resistance and can grow normally even if the temperature is as low as 12 ℃. Recently, the reporter interviewed Zhou Shiliang, general manager of Guangzhou Yihua Horticulture Co., Ltd., and he explained in detail the main points in the production process of 'Sunshine'.

Illumination control

In the seedling just on the pot stage, the root of the seedling is relatively fragile, so it is necessary to reduce the light intensity. In the first week, the top of the greenhouse should be covered with a 75% shade net. If the seedlings enter the shed in summer, they should sprinkle some water on the ground to increase air humidity. When the root of the seedling is not perfect, excessive light will cause water loss, dehydration and death of the seedling. One week after the seedlings entered the shed, it was best to increase the light properly and keep it within 20,000 lux.

About 15 days, it is necessary to observe whether the root of the plant grows to the bottom of the basin, and if it reaches the bottom of the basin, the heart can be removed. After picking the heart, the light should be controlled within 15000 lux and shaded for two consecutive days. After heart removal, the plants have wounds, so remember not to expose yourself to the sun at this time. After shading for two days, increase the light moderately, keeping it between 15000 and 20, 000 lux. After the seedlings grow in the pot for 45 days, the plant begins to promote flowers when the crown is about 25 cm. If it is in summer, it needs to be shaded, and in winter, it is necessary to close the lights, that is, stop adding light at night to ensure that the illumination time of the plant does not exceed 12 hours. After the bract changed color, the light was controlled within 15000 lux, and the finished product was finished in 50 days.

Temperature and humidity management

The best growth temperature of 'Sunshine' is between 18 ℃ and 28 ℃, and the lowest temperature should not be lower than 12 ℃, otherwise it will slow down the plant growth and prolong the time of the finished product. In the seedling stage, the temperature should not be lower than 15 ℃ at night, otherwise the plant growth rate should slow down, and it should be controlled below 32 ℃ during the day, and the greenhouse should be well ventilated and the humidity should not be less than 50%. After coring, the temperature in the greenhouse had better be kept within 30 ℃, and the humidity should not be less than 65%, because if the light is too strong, the temperature is too high, and it is too dry, it will affect the germination and growth of lateral buds of the plant.

During the flowering period, the night temperature must be below 24 ℃. The flowering stage of poinsettia is also called induction cycle, which refers to the time it takes for the finished flower to change color. During the induction period, if the temperature is higher than 24 ℃, it will affect the flowering, flowering and growth of the plant. At this stage, we should also pay attention to reduce the humidity, not more than 70%, otherwise it is prone to diseases such as gray mold. During the induction cycle, the temperature should be controlled between 16 ℃ and 18 ℃, so that the plant color will be more bright. After the bracts changed color, the temperature should be controlled between 15 ℃ and 30 ℃.

Water and fertilizer management

Small seedling stage just on the basin, the first watering only water, and one-time watering. In the process of the growth of poinsettia, as long as it is watered, it must be watered thoroughly at one time, and only half of it must be watered. Wait for the root of the plant to grow to the bottom of the basin and fertilize for the first time. Nitrogen, phosphorus and potassium fertilizers are proportioned according to the proportion of 20 "9" 20 or 20 "10" 20, and diluted 1200 times into water-soluble fertilizer before use. Then observe the plant growth, when the lack of water, watering, each watering at the same time fertilization. After the plant entered the peak growth period, the fertilization concentration could be increased to 600 times or 700 times. After the bracts were red through two pieces, the fertilization concentration was appropriately reduced and diluted by 800x to 1000 times. The pH value should be kept between 5.8 and 6.2 throughout the growth of Sunshine.

Pest control, mainly to prevent and control diseases and insect pests, spraying insecticides once a week and fungicides every two weeks. The most prominent pest of 'Sunshine' is whitefly, which has more prosperous periods of plant growth. It only takes 7 to 10 days for whitefly to grow to adult from egg to adult, so the focus is on prevention. Once the pest is serious, plants can only be destroyed. In the spring seedling stage, growers should also pay attention to mosquito larvae, because mosquito larvae can damage the roots when they are not strong enough. In this regard, a layer of lime can be sprinkled on the floor of the greenhouse to reduce the humidity of the greenhouse, inhibit the reproduction of pests, and spray conventional drugs.

The most serious disease of 'Sunshine' is Botrytis cinerea, which focuses on prevention. The humidity in the greenhouse should not be too high, and it should be well ventilated. Once the disease occurs, it should be treated with conventional medicine. In the production process, we should also pay attention to ensure the growth space between the plants, do not let the leaves touch each other, if too crowded, it will lead to plant overgrowth.

The main points of planting poinsettia 'Sunshine'

A new member of the poinsettia family has been added this year, and a new variety, 'Sunshine', launched by Guangzhou Yihua Horticulture Co., Ltd., will be on the market soon. The characteristic of 'Sunshine' is very prominent, with high crown uniformity and good branching. Compared with the main variety of Yihua horticulture 'Golden Award', 'Sunshine' grows faster, and its finished product is 7 to 10 days earlier than 'Golden Award'. It takes only 90 days for 15 cm pot diameter to grow to the finished product from the seedling to the pot. It has strong cold resistance and can grow normally even if the temperature is as low as 12 ℃. Recently, the reporter interviewed Zhou Shiliang, general manager of Guangzhou Yihua Horticulture Co., Ltd., and he explained in detail the main points in the production process of 'Sunshine'.

Illumination control

In the seedling just on the pot stage, the root of the seedling is relatively fragile, so it is necessary to reduce the light intensity. In the first week, the top of the greenhouse should be covered with a 75% shade net. If the seedlings enter the shed in summer, they should sprinkle some water on the ground to increase air humidity. When the root of the seedling is not perfect, excessive light will cause water loss, dehydration and death of the seedling. One week after the seedlings entered the shed, it was best to increase the light properly and keep it within 20,000 lux.

About 15 days, it is necessary to observe whether the root of the plant grows to the bottom of the basin, and if it reaches the bottom of the basin, the heart can be removed. After picking the heart, the light should be controlled within 15000 lux and shaded for two consecutive days. After heart removal, the plants have wounds, so remember not to expose yourself to the sun at this time. After shading for two days, increase the light moderately, keeping it between 15000 and 20, 000 lux. After the seedlings grow in the pot for 45 days, the plant begins to promote flowers when the crown is about 25 cm. If it is in summer, it needs to be shaded, and in winter, it is necessary to close the lights, that is, stop adding light at night to ensure that the illumination time of the plant does not exceed 12 hours. After the bract changed color, the light was controlled within 15000 lux, and the finished product was finished in 50 days.

Temperature and humidity management

The best growth temperature of 'Sunshine' is between 18 ℃ and 28 ℃, and the lowest temperature should not be lower than 12 ℃, otherwise it will slow down the plant growth and prolong the time of the finished product. In the seedling stage, the temperature should not be lower than 15 ℃ at night, otherwise the plant growth rate should slow down, and it should be controlled below 32 ℃ during the day, and the greenhouse should be well ventilated and the humidity should not be less than 50%. After coring, the temperature in the greenhouse had better be kept within 30 ℃, and the humidity should not be less than 65%, because if the light is too strong, the temperature is too high, and it is too dry, it will affect the germination and growth of lateral buds of the plant.

During the flowering period, the night temperature must be below 24 ℃. The flowering stage of poinsettia is also called induction cycle, which refers to the time it takes for the finished flower to change color. During the induction period, if the temperature is higher than 24 ℃, it will affect the flowering, flowering and growth of the plant. At this stage, we should also pay attention to reduce the humidity, not more than 70%, otherwise it is prone to diseases such as gray mold. During the induction cycle, the temperature should be controlled between 16 ℃ and 18 ℃, so that the plant color will be more bright. After the bracts changed color, the temperature should be controlled between 15 ℃ and 30 ℃.

Water and fertilizer management

Small seedling stage just on the basin, the first watering only water, and one-time watering. In the process of the growth of poinsettia, as long as it is watered, it must be watered thoroughly at one time, and only half of it must be watered. Wait for the root of the plant to grow to the bottom of the basin and fertilize for the first time. Nitrogen, phosphorus and potassium fertilizers are proportioned according to the proportion of 20 "9" 20 or 20 "10" 20, and diluted 1200 times into water-soluble fertilizer before use. Then observe the plant growth, when the lack of water, watering, each watering at the same time fertilization. After the plant entered the peak growth period, the fertilization concentration could be increased to 600 times or 700 times. After the bracts were red through two pieces, the fertilization concentration was appropriately reduced and diluted by 800x to 1000 times. The pH value should be kept between 5.8 and 6.2 throughout the growth of Sunshine.

Pest control, mainly to prevent and control diseases and insect pests, spraying insecticides once a week and fungicides every two weeks. The most prominent pest of 'Sunshine' is whitefly, which has more prosperous periods of plant growth. It only takes 7 to 10 days for whitefly to grow to adult from egg to adult, so the focus is on prevention. Once the pest is serious, plants can only be destroyed. In the spring seedling stage, growers should also pay attention to mosquito larvae, because mosquito larvae can damage the roots when they are not strong enough. In this regard, a layer of lime can be sprinkled on the floor of the greenhouse to reduce the humidity of the greenhouse, inhibit the reproduction of pests, and spray conventional drugs.

The most serious disease of 'Sunshine' is Botrytis cinerea, which focuses on prevention. The humidity in the greenhouse should not be too high, and it should be well ventilated. Once the disease occurs, it should be treated with conventional medicine. In the production process, we should also pay attention to ensure the growth space between the plants, do not let the leaves touch each other, if too crowded, it will lead to plant overgrowth.