What is the reason for the yellow curling of the leaves of the mushroom girl?

In the process of planting Cigu, sometimes after several days of rain, there is often a large area of yellow leaves in the field of Cigu, what is the reason? It is often caused by a combination of several factors:

One is the application of unrotted human and animal manure water, resulting in leaf edge burning; second, the mixed occurrence of Cigu brown spot disease and markings disease causes the leaves to turn yellow and dry; the third is to set up the natural yellowing of the outer leaves and old leaves in time; Fourth, after continuous rain, the water level of Cigutian is too high, and many internal and external factors can lead to all yellow leaves within a few days. In addition, there are also the hazards of lotus tube aphid, Spodoptera litura, etc., which accelerate the occurrence of yellow leaf phenomenon.

In view of this situation, the following measures need to be taken: first, the unrotted human and animal water cannot be applied to the human and animal fields, and the human and animal water must be fully decomposed and fermented before it can be applied; the second is to spray 2 3 times with 70% thiophanate-methyl wettable powder plus 75% chlorothalonil wettable powder 1000 times to prevent and control diseases; The third is to peel off the outer leaves, old leaves and diseased leaves, and leave 4 5 new leaves for each plant each time, so as to improve the ventilation and light transmission conditions between the rows and reduce the damage of diseases and insects; Fourth, the water level in the field of Luoqianci Station reached 3 5 cm; Fifth, strengthen the prevention and control of pests such as lotus pipes and aphids.

It is worth reminding that to prevent the phenomenon of yellow leaves of Cigu, it is necessary to prevent it as soon as possible and observe more, especially the initial manifestations of brown spot disease and markings disease are not very obvious, once the outbreak occurs, the loss caused is greater. In addition, it is necessary to strengthen the management of water and fertilizer in the field, and it cannot be left alone after planting.

The temperature difference between day and night is relatively large, it is easy to cause the leaves of the mushroom to fall off, and the appearance of rolling, generally in autumn, or in autumn into winter, the temperature difference between day and night is relatively large, or the temperature in summer is too high, resulting in the evaporation of water in flowers too quickly.

There may be several reasons for the yellow leaves of mushroom mothers:

1.* Malnutrition: If the leaves of the mushroom are yellow, it may be caused by too much or too little fertilization, or incorrect fertilization. If the plant is left in a state of malnutrition for a long time, it will cause the leaves to turn yellow.

2.*Pest and disease infestation: If there is a disease in the leaves, such as white leaf disease, brown spot, virus disease, soft rot or canker disease, it may also cause the leaves to turn yellow.

3.*Environmental problems: If the environment is not well ventilated, or the light is too strong or too weak, it may cause the leaves to turn yellow.

4.Improper water management: If you water the mushroom too much or too little, it can cause the leaves to turn yellow. If you water too much, it may cause the roots to soak in water, which can cause the leaves to turn yellow;If there is a lack of water for a long time, it will also cause the leaves to turn yellow.

Workaround:1Yellowing of leaves due to malnutrition can be improved by controlling the amount, frequency and method of fertilization.

If the leaves are yellowing caused by excessive fertilization, you can increase the amount of watering or replace the soil to alleviate itIf the leaves are yellowed due to too little fertilization, you can increase the amount or frequency of fertilization.

2.For the yellowing of leaves caused by pest and disease infestation, it is necessary to use corresponding fungicides or insecticides for control. For example, Bordeaux liquid, chlorothalonil and other diseases can be used to control diseases, and systemic insecticides can be used to control insect pests.

3.For the yellowing of leaves caused by environmental problems, it can be improved by adjusting environmental factors. For example, increase the amount of ventilation, adjust the light intensity, etc.

4.For leaf yellowing caused by improper water management, the amount and frequency of watering need to be reasonably controlled. If the leaves turn yellow due to overwatering, you can increase ventilation and light conditions;If the leaves are yellowing due to a prolonged lack of water, you can increase the amount and frequency of watering.

At the same time, it is also necessary to maintain the proper moisture of the soil.

Potassium deficiency, potassium dihydrogen phosphate fertilization.

Summary. The yellow leaves of the mushroom Niangguo are mainly in the following situations:

One is water yellow. Caused by over-watering, it is characterized by no obvious change in the old leaves and yellowing of the young leavesWater should be controlled immediately.

The second is dry yellow. Due to lack of water, caused by drought, it is characterized by the bottom up of the old leaves first yellow, if the lack of water for a little longer, the whole plant yellow leaves, or even death, should be watered in time.

The third is fat yellow. Caused by excessive fertilization or high concentration;It is characterized by thick, shiny and uneven young leavesFertilizer, cultivation and watering should be controlled.

Fourth, goose yellow. It is caused by insufficient fertilizer, low fertilizer concentration, and long fertilization intervalIt is characterized by the first yellow of young leaves and young stems, and if you do not apply fertilizer in time after seeing this phenomenon, it will also cause the whole plant yellow leaves and even die;For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at one time, so as not to cause root burning.

What's going on with the mushroom lady yellow leaves?

The yellow leaves of the mushroom Niangguo are mainly in the following situations:

One is water yellow. Caused by over-watering, it is characterized by no obvious change in the old leaves and yellowing of the young leavesWater should be controlled immediately.

The second is dry yellow. Due to lack of water, caused by drought, it is characterized by the bottom up of the old leaves first yellow, if the lack of water for a little longer, the whole plant yellow leaves, or even death, should be watered in time.

The third is fat yellow. Caused by excessive fertilization or high concentration;It is characterized by thick, shiny and uneven young leavesFertilizer, cultivation and watering should be controlled.

Fourth, goose yellow. It is caused by insufficient fertilizer, low fertilizer concentration, and long fertilization intervalIt is characterized by young leaves swimming, young stems at the first yellow, if this phenomenon is not fertilized in time, it will also create a closed grinding sedan chair into the whole plant yellow leaves and even die; For flowers lacking fertilizer, avoid applying a large amount of thick fertilizer at a time, so as not to cause root burning.

Generally these four situations are the case.

You can judge based on your specific situation.

I planted it in the earth, and I didn't water it.

That should be dry yellow.

During this time, it rained a lot.

Pay attention to watering and potassium supplementation.

Potassium dihydrogen phosphate fertilization.

Squirting. If it is planted on the ground.

It can be sprayed.

Sprinkler irrigation. Squirt a few times.

Spray 3 times, 5-7 days apart.

Is it okay to spray this.

Which one? The main thing is that you need to supplement with potassium.

Mushroom Niangguo virus disease (mainly manifested as wrinkles, atrophy, dwarfing, small leaves, mosaic leaves, yellowing sometimes accompanied by leaf curl phenomenon, greening and other symptoms), most of the cases will almost stop growing during the outbreak period, field crops should be affected by the dry and hot wind in summer, and spots or stripes appear on the leaves. The use of this product is now listed, in order to correspond to the prevention, the early and middle stage of the disease**, if in the later stage, only to promote the flower and fruit, the late stage is not recommended**, give up the replanting of other crops may be more valuable than**.

It may be caused by improper cultivation.

Each crop must be thinned in the planting process, yellow mushroom fruit is no exception, the principle of thinning seedlings is "fertilizer should be thin, thin land should be thick", pay attention to cultivating and weeding, in about half a month after planting can begin to emerge.

After the seedlings emerge, the weeds in the surrounding garden should be eliminated, and when the seedlings grow to about 10 cm tall, the second time is carried out, and the third time is completed in July.

In the rainy season, it is necessary to pay attention to drainage, apply water-soluble fertilizer to fertile leaves, and properly irrigate and drain the orchard to keep the soil moist and improve the final yield.

After slowing the seedlings, it is necessary to properly water and top dressing according to the fertility and growth of the soil to promote the development of roots.

1) In the cultivation process, the environmental conditions and management methods are not appropriate; A phenomenon that causes abnormal physiological activity. We call them physiological diseases. Mycelium wind long:

The aerial hyphae on the surface of the hyphae are dense, which affects the mushroom production. The main reason for the formation of mycelial wind is high air humidity and poor ventilation. To prevent it, strengthen ventilation and reduce humidity.

Oyster mushroom bigfoot mushroom Changyouxian: the fruiting body cap is extremely small, and the stipe is thick and long. This is mainly caused by lack of oxygen and poor ventilation.

As long as ventilation is strengthened, pay attention to the light can prevent it. Oyster mushroom wilting: The growth of mushroom buds or fruiting bodies is stagnant, and gradually shrinks, dries out, dies, and decays.

The main reason for the occurrence is insufficient moisture and excessive ventilation. Prevention method, increase the relative humidity of the air, do not dry the material surface, and do not let the wind blow directly on the mushroom buds or fruiting bodies when ventilating. Oyster mushroom pesticide damage:

After the fruiting body is sprayed (dichlorvos), the cap stops growing and a black border forms on the edges, which rolls over. The use of some harmful pesticides should be prohibited. Rust spots:

Rusty brown spots appear on the caps and stalks of oyster mushrooms. The main cause of this is poor ventilation and excessive humidity. prevention methods, strengthen ventilation, reduce humidity.

2) The fruiting body is contaminated with other miscellaneous bacteria, resulting in morbidity or death. We call this an impregnated disease. The common disease of oyster mushroom is dry bubble disease (brown spot disease), which mainly harms its normal growth.

Symptoms include white villous hyphae on the surface of the fruiting body, brown spots, and atrophied and cracked caps. Prevention and control method: reduce the temperature and strengthen ventilation.

Spray 2% formaldehyde solution or 1:500 times carbendazim in the ward.

3) Hazards and prevention methods of oyster mushroom jumping insects: 1. Dangerous and resistant to shooting. Adult jumping worms have flexible tails that bounce like fleas and bite the fruiting body. 2. Prevention and control methods. Rotenin that can be sprayed after the discovery of jumping insects.

Recently, several flower friends have asked the same question, many new leaves of plants have curled up, what is the reason for this situation? New leaves are rolled