Cultivation method of Mailan (basic knowledge): the best breeding time: Mailan I is most suitable for breeding in May.
The most suitable soil for growth: it is best to choose a soil basin for the Mailan container, which needs loose, fertile and well-drained soil.
Growth humidity requirements: keep it slightly wet at flowering stage and slightly dry after flowering.
Optimum growth temperature: The optimum growth temperature of Mailan is 18 ~ 20℃ during the day, 14 ~ 16℃ at night, and the overwintering temperature is 6 ~ 7℃.
Optimum growth light: Mailan is a light-proof plant, so it needs sufficient light, but it is easy to grow in white under strong light and high temperature. The flower bud formation of freesia is completed under the condition of short sunshine, and long sunshine can promote its flowering after flower bud formation.
Matters needing attention in cultivating Mailan: Fertilization: Mailan begins to enter the flower bud differentiation stage when it grows to 3-4 leaves, and should be applied with 10- 15 days, and the light hours should be shortened (only light 1 0 hours per day) to facilitate flower bud differentiation. During flower bud differentiation, keep the pot soil moist and apply phosphate fertilizer and potassium fertilizer for 2 ~ 3 times. Stop fertilizing after flowers and plants appear.
Key points of watering: Mailan should not be watered too much in the early stage of growth. Generally, water should be poured/kloc-0 times a week, and the water should be sufficient when the flower stems are pumped, but the basin soil should not accumulate water, otherwise the roots will rot easily.
Pruning essentials: Mailan should be pruned within 1 ~ 2 weeks after flowering, so as to reduce nutrient consumption, promote more lateral branches and increase the flowering amount in the coming year.
Change the soil in the basin: When Mailan changes the basin, try to bring soil to the roots and try to avoid the bare roots.
Breeding point:
1, medulla is propagated by ramets. In dividing plants, the bulbs enter the dormant period around May, and 3 ~ 5 secondary bulbs are formed around the mother bulbs. Peel off the bulbs, store them in grades, and put them in pots in September.
2. Mailan can also sow and reproduce. Usually, seeds are sown in shallow pots in time after harvest in May. After sowing, move the pot to the leeward and sunny place, keep it moist, and the germination temperature is 20 ~ 22℃.
Pest control:
1, Mailan mainly has dry rot of gladiolus which harms plants and bulbs. Spraying 10 {BF} microbial inoculum 40 1 acetic acid solution 1000 times on the bulb surface for control.
2. Mailan has aphids that harm flowers and spread viruses; Thrips can prevent flowers from blooming normally. Use chlorpyrifos and other 50 {BF} internal inhalation insecticides to control water 1000 times.
3. freesia mosaic. There are brown stripes on the leaves and green stripes on the petals of freesia. In severe cases, the leaves will be twisted.
4. Necrosis of freesia. Prevention and control methods: disinfect the seed balls before sowing; Use 40 {BF} omethoate 1500 times solution to kill aphids or carbofuran to kill nematodes during the growth period; If a diseased plant is found, it should be pulled out and destroyed in time.
Experience in cultivating barley blue: 1. The planting depth of Mailan is from the top of bulb to the ground 1 m ~ 2 cm. In order to prevent plants from lodging, the soil is gradually covered with 2 ~ 3 cm during the growth process. If the soil is not covered in order to save labor and convenience in the growth process, the planting depth is 3 ~ 4 cm.
2. After the bud appears, it is necessary to control the watering amount to make it grow vigorously, but it should be noted that excessive drying will also affect the development of the bud.