Disease and insect pest control of sudden laughter

1. Scale of carbon blast

The stem was soaked in 0.3% copper sulfate solution for 30 minutes before planting, washed with water, dried and planted.

2. Spodoptera litura

Generally, the harm can be prevented by 2500 times of Regent suspension and 1000 times of Wanling from late spring to November.

Well, this is the end of the introduction to the cultivation of sudden laughter. The other shore flower is well known because its flowers and leaves do not meet from generation to generation, so when it comes to the other shore flower, everyone can think of it very quickly, but when people encounter sudden laughter, they often call it "yellow other bank flower". After reading today's introduction, don't admit your mistake in the future.

Disease and insect pest control of sudden laughter

Charcoal plague of Dixiao and its control

Symptoms of charcoal plague: wilting or dying branches and leaves that suddenly laugh.

Prevention and control of charcoal blast: before planting with bulbs, soak in copper sulfate solution for half an hour, wash and dry with water before planting. Carbendazim is sprayed every half a month and can be sprayed with benzoate at the initial stage of the disease.

Spodoptera litura with sudden laughter and its control

Spodoptera litura symptoms: Spodoptera litura larvae harm leaves, buds, fruit, gnawing off the flesh, biting empty seeds, the general disease in late spring and November.

Spodoptera litura control: Regent can be used, Wanling control.

Spodoptera litura with sudden laughter and its control

Symptoms of Spodoptera litura: the larvae will invade the laughing plant, hollowing out the leaves, and will directly eat the inside of the bulb, leaving a large number of green or brown feces where the plant is infected.

Prevention and control of Lycoris radiata: if there are neatly arranged eggs on the back of the leaves, they should be removed in time; the overwintering pupae can also be dug out in combination with turning the ground in early spring or winter; when insect pests occur, they can also be sprayed with Lexben or phoxim emulsion. It is best to spray when the larvae come out in the morning or evening to feed.

Thrips of sudden laughter and its control

Thrips symptom: thrips suck nutrients at the long leaves of the bulbs, causing the leaves to lose green.

Thrips control: you can use imidacloprid, Emile rotation spray control.

Planting methods and knowledge of pest control of Michelia mollissima

Suddenly laugh, also known as iron arrow, yellow Lycoris, etc., for the Lycoris family Lycoris perennial herbs, in the garden can do under the forest ground flowers, flower border planting or natural planting between mountains and rocks, because of its flowering time leaves, so it should be matched with other more tolerant herbaceous plants, with the characteristics of strong scape and long flower stalk, let's take a look at the breeding method of laughing suddenly!

The growth habit of sudden laughter

Suddenly laugh like the sun, wet environment such as shady and wet hillsides, rocks and stone cliffs, but also can withstand semi-shade and dry environment, slightly cold-resistant, strong vitality, no strict requirements for the soil, such as fertile soil and good drainage, the flowers are particularly prosperous. Distributed in Fujian, Taiwan, Hubei, Hunan, Guangdong, Guangxi, Sichuan, Yunnan, Japan and Myanmar.

The breeding method of sudden laughter

1. Ball division propagation: the ball division method is the simplest and most commonly used method of propagation. The plant is dug up during the dormant period or after flowering, and the epiphytic bulbs near the mother ball are removed and planted, and they can blossom after about a year or two.

2. Scale cutting: the cleaned bulb base was cut into rice shape, and the depth of bulb length was 1x2px3. After disinfection and shade drying, it was inserted into moist sand, perlite and other substrates. After separation and cultivation, seedlings could be formed.

3. Tissue culture: MS medium was used for tissue culture of Michelia vulgaris. Pedicel and ovary were used as explants. Callus could be formed at the incision, adventitious roots could be formed after 1 month, and adventitious buds could be formed after 3-4 months.

The planting method of sudden laughter

1, temperature: suddenly laugh like warmth, cold resistance is not high, high temperature resistance is not very good, so the temperature during the culture period can not exceed 30 degrees, nor lower than 8 degrees Celsius, the average temperature should be kept at least 24 degrees Celsius.

2. Watering: suddenly laugh and like to be wet, especially during the growth period, always pay attention to keep the soil moist, but not too much watering at the same time, to avoid stagnant water, resulting in plant bulb rot.

3. Fertilization: in general, it is enough to apply fertilizer 2 to 4 times a year. The first time is to apply organic fertilizer or compound fertilizer before flowering, and the second time is to apply nitrogen fertilizer, phosphorus and potassium fertilizer after flowering at the end of October.

Disease and pest control of sudden laughter

1. Carbon blast: the common diseases of Hudixiao are charcoal blast. The bulbs were soaked in 0.3% copper sulfate solution for 30 minutes before planting, washed and dried with water, sprayed with 50% carbendazim wettable powder every half a month, and sprayed with 50% benzoate 2500 times solution at the initial stage of the disease.

2. Spodoptera litura: Spodoptera litura mainly harms leaves, buds and fruits by larvae, gnaws on mesophyll and bites scape and seeds, generally from late spring to November. It can be controlled with 2500 times of 5% Regent suspension and 1000 times of Wanling.

3. Lycoris radiata: it can be combined with turning the ground in winter or early spring to dig out the overwintering pupae and reduce the population number. Spraying 1500 times of Lexben or phoxim EC at the time of occurrence, the spray effect was better when the larvae came out to feed in the morning or evening.

4. Thrips: thrips mainly absorb nutrients at the hair leaves of the bulbs, resulting in the loss of green leaves, especially after the fruit is ripe. It can be controlled by rotating spray with 3000 times of imidacloprid and 70% amyl 6000 times.