How to water Dutch iron (how often) the breeding method of Dutch iron

The Dutch iron leaf is firm, the color is emerald green, is a kind of evergreen plant in four seasons, has the very good greening function. It has strong adaptability, low requirements for growth environment, and can effectively absorb a variety of harmful substances, purify the air, and is suitable for family breeding. So, how often should Dutch iron be watered? How do you reproduce?

How to water Dutch iron (how often)

In the process of growing, Dutch iron needs to keep the basin soil moist and slightly resistant to drought. Generally, it can be watered when the basin soil surface is "white". In winter, if the room temperature is less than 15 ℃, it needs to keep a certain degree of dryness, and then water it after drying. Summer high temperature period in the outdoor or balcony maintenance, the need to keep the basin soil moist, to avoid drought, resulting in leaves yellow, withered.

Propagation methods of Dutch iron

I. Cuttage propagation is generally used in families.

1. Combined with pruning, it can be done from April to August every year.

2. The indoor can be carried out all the year round, but the temperature should be kept between 20-3OC in order to grow new roots.

3. It is best to break off the pile by hand, remove the lower 1 move 2-2 stroke 3 leaves, and pour water directly into the clean river sand to avoid the strong light for a while; the whole plant should first remove the leaves after being cut short, and then cut and watered in the clean river sand, and then keep the air humidity at about 70%, and grow new roots in a month to become a new plant.

Second, Dutch iron is commonly used for cutting propagation.

The main results are as follows: 1. cutting can be carried out in the whole growing season, but it is better in spring and autumn.

2. Cut 10-30 cm buds when cutting. after the wound is slightly dried, the base is stained with yellow mud, and the cuttings are cut in the clean river sand, which can take root in about a month.

3. You can also intercept 30-40 cm long stem segments, disinfect the wound with fungicides, dip them with yellow mud, lie on the sand bed, cover them with sand, cover them with 2-2 cycles, and sprout the outstanding stem segments; or seal the top of the stem segments with paraffin and insert them into the sand bed to make the upper hidden buds sprout one after another.

4. Cut the cuttings when the buds grow to more than 10 cm.

What are the diseases and insect pests of Dutch iron

I. anthrax

1. Symptoms

The disease mainly infects leaf tip and leaf edge, and its symptom is similar to that of leaf spot. At the initial stage of the disease, there were moist brown spots, and sometimes pink colloid mucus, that is, the conidial disk and conidial pile of the pathogen. After development and diffusion, semicircular or irregular oval, reddish purple or dark brown disease spots, burning brown or gray outstanding in the center, and slightly sunken, gradually expand after the onset of the disease, wheel marks can be seen around, brown, disease spots gradually withered and withered. There are black particles scattered on the spot. When the disease is serious, it causes the whole leaf to turn yellow and wilt.

2. Pathogen

Colletotrichum gloeosporioides is a subphylum fungus. It has a characteristic small clump shell, which belongs to the subphylum Aspergillus. The conidium disk of the pathogen was born under the leaf epidermis. After breaking through the epidermis exposure. Conidium disks are aggregated or scattered, arranged in concentric rings; conidium disks have brown setae, conidium cylindric, blunt round at both ends, unicellular, colorless.

3. Occurrence regularity

The pathogen overwintered on the diseased remains with conidia and hyphae. The conidia produced in the following year carried out primary infection and re-infection by water sputtering. After Yan gave birth to the disease spot, conidia were formed and re-infected, resulting in the continuous development of the disease. High temperature, rainy season, weak growth, easy to get sick.

Control methods of iron diseases and insect pests in the Netherlands

1. Increase the application of organic fertilizer, timely drainage, prevent moisture retention, and apply appropriate amount of phosphorus and potassium fertilizer.

2. Prune the diseased branches and leaves and remove the diseased body in time, and concentrate on burying or burning. National conidia are not controlled, and when continuous infection occurs, spray with 29% stone sulfur mixture 100200 times or 30% suspending agent basic copper sulfate 1000 times (applied before the disease), 27% copper noble 500800 times, 4% agricultural antibiotic 120 water agent 600800 times, 25% amicida suspension 100-200mg, 120% thiobacillus copper 500800 times spray.

Dutch iron has strong adaptability, regular plant shape, strong stem, strong green leaves, masculine and upright temperament. It has strong adaptability, exuberant vitality and simple cultivation and management. it is an excellent plant suitable for indoor and outdoor decoration and culture. large plants can decorate the courtyard and small pots can also be cultured in the study and other places.