Large flower pansy cultivation method
Big flower pansy Cultivation method
First, sowing seedlings: the traditional sowing period is the cool season. In areas where winter is not too cold (-3 °C), you can try to use it in the early autumn for greenfield application. This requires planting in summer (July to early August). Due to high temperature, the germination rate will be greatly reduced. The solution is to find Sowing in a cool environment (mountain) or using rimed seeds. The pH of the seeding medium is 5.8 to 6.2. Too low will cause the boron deficiency to cause the tip of the leaf to be coke, and the seedling will emerge in about 7 to 14 days. No germination is required during the germination period, and the medium is kept moist, otherwise the germination will not be neat.
When the cotyledons are fully expanded, the humidity of the medium should be controlled to be somewhat moist, so that the color is kept from dark to brown. At this time, 50 ppm of nitrogen fertilizer can be applied; when the true leaves are exhibited, the concentration of fertilization can rise to 150 ppm, EC value is controlled at 0.7 to 1.0; when the seedlings have 3 to 4 pairs of true leaves and the seedling height is about 3 cm, the humidity should be adjusted to have a periodic change of dry and wet within 24 hours, and the upper basin can be started.
Second, cultivation management: the basin is usually used in small pots with a diameter of 10 to 13 cm. The well-drained culture soil is used. The pH value is controlled at 5.8 to 6.2. If it is greater than 6.5, the roots will be black and the base leaves will be yellow.
Light regulation: Pansy grows in the autumn and winter seasons, it needs a lot of sunshine, otherwise it is prone to symptoms such as long hair, and can be slightly shade-tolerant during flowering.
Temperature control: The optimum temperature for growth is 7-15 °C. When the temperature is too low for a long time, the color of the leaves will turn purple. Below 15 °C, it will help to produce a good plant shape. Above 15 °C is conducive to flowering. In summer, the flowers are smaller than 30 °C. , the growth is weak.
Water and fertilizer management: Each watering must be carried out when the soil is slightly dry, especially during the low temperature and weak light season. Excessive water affects both growth and long branches. When the plants are flowering, sufficient water should be ensured to increase the flowers and increase the amount of flowers. In the early stage of growth, nitrogen fertilizer is the main component, and the calcium-containing compound fertilizer with a concentration of 100-150 ppm is applied every 2 to 3 times of watering. Phosphate fertilizer should be added near the flowering stage. When the temperature is low, ammonia nitrogen will cause root rot.
Pest control: Pansy traits are strong, generally not easy to infect pests and diseases, but in the rainy south, due to high humidity, flowers are susceptible to gray mold, it is very important to pick up the withered flowers in time, while using white fungus 800-1000 times The liquid spray effect is good. In addition, places with high planting density are easily infected by red spiders because they are not ventilated, and can be effectively controlled with 800 times dichlorvos and omethoate.
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