Hydrangea cultivation management method:
Breeding method: Hydrangea can be propagated by means of ramets, beading, cuttings and the like.
Cutting in the greenhouse all year round. Generally, from May to June, combined with early spring pruning and post-flower shaping. Select semi-lignified pest-free branches, each 10 to 15 cm long, retain 2 to 3 knots and 1 to 2 leaves at the top, and insert them into the sand or vermiculite-based seedbed to cover the area properly. Keep the substrate moist, the air humidity is above 80%, and rooting begins around 18 days. Gradually reduce the number of water sprays and increase the light, and transplant them in about 1 month.
Cultivation management: Planting cuttings should be placed in the basin after rooting. The hydrangea flowers are loose, fertile and well-drained. They are usually prepared in a ratio of 4:4:2 with humus soil, garden soil and organic fertilizer. The scale production should be carried out with grass carbon, perlite and organic fertilizer at 6:2: 2 ratio preparation, thoroughly disinfected before use.
Fertilization: The hydrangea is fertilized, and the organic fertilizer is usually chased once every half a month. There are more nitrogen fertilizers in the pre-growth stage. The flower bud differentiation and flower bud formation period are more phosphorus and potassium fertilizers. Foliar application of 0.1% to 0.2% potassium dihydrogen phosphate can also be carried out 2 to 3 times. After the flower buds pass through the color, the fertilization is stopped.
Watering: The transpiration of the leaves of the hydrangea is very large, so it must be watered in time. Even if the short-term water shortage is wilting, the leaves can be dried and the flowers are necrotic. Especially in the summer, it is necessary to reduce the transpiration by shading and keep the air humidity above 60%. In addition, the color of the hydrangea is affected by the pH of the soil, usually blue in an acidic environment and red in an alkaline environment. Therefore, the pH of the water is determined according to the desired color.
Temperature: L hydrangea is not resistant to high temperatures, and the temperature is required to be between 15 ° C and 25 ° C. The high temperature will make the plant dwarf and fade, reducing the quality. After the flower buds are colored, the temperature is maintained at 10 ° C to 12 ° C to enhance the color and play a role in preservation.
Illumination: The hydrangea is shade-tolerant, and direct sunlight can cause sunburn, so it needs to be shaded. Generally, it is necessary to shading 60% during the growth period, and the shading should be properly shaded after the color is passed, so as to avoid the color becoming lighter and losing its brilliance.
Pruning: The germination of the hydrangea is strong, and many nutrient shoots will germinate at the base of the plant. In order to reduce nutrient loss, it should be wiped out in time. If the old branch needs to be replaced, a strong nutritional branch can be selected as a reserve branch. Shortly after flowering, keep 2 to 3 strong shoots to promote new shoots.
Flowering regulation: In order to open the Spring Festival of the Hydrangea, the healthy plants of 3 to 5 years old can be selected and treated at a low temperature of 2 °C to 4 °C for 14 days, then transferred to the greenhouse for heating, keeping 10 °C to 20 °C, 50 to 60 days. flowering. Pay attention to frequent ventilation, maintain good lighting conditions and high air humidity, apply organic liquid fertilizer every half month until flowering
PE tape &warning tape,High Quality PE tape &warning tape,PE tape &warning tape Details, Nanjing Youzegold Trade Co., Ltd.
Garden Tie Tape Co., Ltd. , http://www.dotape.com