What are the planting methods and matters needing attention of Cuiju? Attached diseases and insect pests and control methods!

Green chrysanthemum is often used in horticulture and is an economical flower. Chrysanthemum flowers are not colorful, there are all kinds of blue, red, white and yellow. So, what are the planting methods and matters needing attention of Cuiju? What are the diseases and insect pests of Cuiju and their control methods? Let's get to know it.

I. planting methods of green chrysanthemum

1. Water supply

Cuiju likes a humid environment, but is afraid of being too wet, so it is a shallow-rooted plant, so it is necessary to keep the basin soil moist during the growing period, which is conducive to the growth of plants. Because it is relatively dry in summer, it can appropriately increase the frequency of watering.

2. Lighting

Cuiju likes a warm, sunny environment and grows exuberantly in an environment with convenient ventilation and sufficient light.

Cuiju is sensitive to sunlight and likes sunlight.

3. Temperature

The suitable growth temperature of Cuiju is 15 ℃-25 ℃, which is weak in cold tolerance and not resistant to extreme heat.

In winter, the temperature should not be lower than 3 ℃. If the temperature is below 0 ℃, the stems and leaves will suffer frost damage.

If the temperature exceeds 30 ℃ in summer, it will cause Cuiju to blossom less or delay flowering.

4. Soil

Cuiju likes fertile, moist, good drainage soil, generally choose loam, sandy loam, according to the growth of the plant appropriate fertilization.

II. Matters needing attention in planting Cuiju

1. Pay attention to moderate watering

Watering should be carried out according to the actual situation, and the basin soil should not be too wet, otherwise it will lead to the growth and lodging of green chrysanthemum, and diseases may occur, and the stagnant water caused by excessive watering will also make the rotten roots of green chrysanthemum die.

2. Keep the light for a long time

Cuiju likes to be exposed to the sun. If the exposure time reaches 15 hours a day, the plant will grow vigorously, be short and strong, and the flowering time will be earlier. On the contrary, if the sunshine time is short, the plant will grow higher and the flowering period will be relatively delayed.

So when breeding, put the plants in a place that can accept direct sunlight.

3. Prune branches frequently

Cuiju does not need to pick the heart, but in order to highlight the flowers on the main branch, you can often trim the side branches, each plant can retain 5 Mel 7 flower branches.

III. Diseases and insect pests of Cuiju and their control methods

1. Chlorosis

Symptom

Chlorosis is caused by mycoplastids (MLO) infection. Mycoplastids mainly survive on various perennial hosts and spread mainly through leafhoppers, dodders and so on.

Chlorosis is the most serious disease of green chrysanthemum. After the disease, the leaves are yellowish and grow a lot of broom-like branches, and the color of the flowers will gradually fade and turn into yellowish green.

The whole plant became short, shrunk, and the growth trend became weaker.

Prevention and cure method

It is best to plant plants in the net room to prevent the infection of germs.

Insecticides such as 1000 marathon liquid or diazinon can be sprayed to control leafhoppers so as to achieve the effect of blocking transmission.

If Cuiju is infected with chlorosis, it can be prevented and treated by spraying medical tetracycline or oxytetracycline 4000 times.

2. Grey mold

Symptom

This disease is easy to occur when the growth of green chrysanthemum is in a high humidity environment of 20 ℃, which is a common disease of green chrysanthemum.

Botrytis cinerea will harm the flowers and leaves of green chrysanthemum, water-stained yellow-green or dark green spots appear at the initial stage of the disease, and then the spots gradually expand, the flowers and leaves fall in the later stage, and the plants die.

When the humidity in the environment is high, a gray powdery spore layer will appear on the leaves.

Prevention and cure method

Pay attention to put the chrysanthemum in a ventilated place to control the humidity of the environment and avoid excessive water accumulation.

Once you get sick, remove the diseased plants and leaves in time and spray 1500 times of 50% Sukeling wettable powder or 1500 times of 50% propofol.

3. Fusarium wilt

Symptom

The pathogen is a specialized type of Fusarium oxysporum, which can survive on diseased plants for many years and can be spread by seeds and soil.

When sick, the whole plant will wither, the plant will dwarf, the leaves will turn black, the rhizome will rot, and there will be pink or rose conidia piles at the base.

Prevention and cure method

When sowing, soak in 0.1% mercury solution for 30 minutes to kill the pathogenic bacteria.

Rotation of seedlings and planting areas or flowerpots every year, because the bacteria on the remnants of diseased plants spread with the soil, avoid mixing the bacteria-carrying soil into the new soil.

At the initial stage of the disease, root irrigation or spray was used, with 50% carbendazim wettable powder 500 times, 0.25 kg per plant, 5 mi once every 7 days, 2 mi 3 times in a row.

You can also use 40% carbendazim glue suspension 400 times, or 50% methyl thiophanate wettable powder 400 times, or 10% Shuangxiaoling 200 times 300 times, or 25.9% Kangkuning 500 solution.

It can also be used to irrigate roots with agricultural resistance "120" 100ppm also has a certain control effect. The root can also be irrigated with 800-1500 times solution of potassium permanganate.

4. Rust

Symptom

When there is a transferred host pine plant near Cuiju, it is easy to lead to the occurrence and epidemic of the disease.

Chlorotic spots appeared on the leaf surface, and a round pile of yellowish powder spores could be seen on the back.

Prevention and cure method

In the early stage of the disease, spray 15% triadimefon wettable powder 1500 times or 12.5% Suboli 3000 times.

5. Brown spot

Symptom

The disease was serious in July and August in the north.

After the disease, the initial leaves appear nearly round purple-brown disease spots of different sizes, and then become black or dark brown.

In the later stage, the center of the lesion turned light gray and small black spots appeared. When there are more disease spots on the leaves, the whole leaves turn yellow and dry.

Prevention and cure method

Diseased leaves should be removed and destroyed in time.

Spray 50% carbendazim wettable powder 1000 times solution, or 80% Dysen zinc wettable powder 500 times liquid, or 1% Bordeaux solution, or 755 chlorothalonil 500 times solution, once every 7 times every 10 days.