Chinese cabbage grown in rural areas has the situation of rotten pimples , how can we effectively c

Insect treatment to avoid wound infection: before sowing or at the seedling stage, it is recommended to use phosphine and other agents to mix soil holes or strips to control needleworms, mole crickets, root maggots, grubs and other underground pests. In the seedling stage of Chinese cabbage, avermectin and other agents can be used to control leaf-eating pests such as yellow-striped jumping beetle, cabbage worm, Spodoptera exigua, Spodoptera exigua, and diamondback moth.

Irrigation of roots with 1000-1500 times of 50% phoxanthion EC and 1000-2000 times of 90% trichlorfon raw powder for 1-2 times has a significant control effect on soft rot.

1) Strengthen management. early and timely control of underground pests, from the seedling stage to timely control of jumping beetles, cabbage insects, diamondback moths, etc.; Cultivation (especially at the end of the rosette) should be shallow so as not to damage the roots, and care should be taken not to damage the aboveground plants; Fertilization should be even, pay attention to the location and concentration of fertilization, and avoid rotten roots and burning leaves. (2) Remove diseased plants.

After entering the balling stage, it is necessary to pay attention to the frequent observation of the plants in the field. Once the diseased plant is found, it should be pulled out and buried deep as soon as possible, and sprinkled with slaked lime around the diseased hole to prevent the spread of germs. (3) Reasonable drainage and irrigation.

In case of drought, it should not be flooded with water, and it is not suitable for local water accumulation, so as to facilitate the healthy growth of plants, improve disease resistance, and prevent the spread of pathogens in the field; Remove stagnant water in vegetable fields in time after rain. (4) Pharmaceutical prevention and control. At the seedling stage of Chinese cabbage or the initial occurrence of the disease, 50 kg of water is sprayed with 200 grams of vegetable Fengning per mu, and the control effect is very significant.

In addition, spray 50% ammonium desen.

Pest and disease control.

Rotten pimple is actually a symptom of soft rot of Chinese cabbage, which is a bacterial disease. Prevention should be based on crop rotation; Small high ridge cultivation is used to avoid water accumulation in the field; Field operations reduce wound formation.

Pest. When it is found that the Chinese cabbage in the field is harmed by root maggots, it is necessary to immediately irrigate the roots with 600-800 times of 90% crystal trichlorfon, or spray 150 kg of 50% octachonate 160 times per mu.

Disease. Soft rot is the main disease in this period, and the diseased plants are uprooted in time, and lime is applied to the holes, and about 250 grams are applied to each hole.

Pesticide control with 150 250 grams of vegetable Fengling per mu, add 50 kg of water, dig holes along the root of the vegetable and pour in, or use 100 150 grams of vegetable Fengling and 100 kg of water to spray the leaves and base.

In the early stage of the disease, it can also be sprayed with 2-3 sticks (1 million units) of agricultural streptomycin per 15 kg of water, or 4000 times of new phytomycin, or 800 times of 70% dixone wettable powder, with 50 kg of liquid medicine per mu.

Prevention and control once in 7-10 days, and 2-3 times in a row. Focus on the petioles and stems of the plants.

Because Chinese cabbage is relatively resistant to low temperature compared with other vegetables and fruits, so every autumn, we will plant some Chinese cabbage in our vegetable garden, fry and eat, go to the hot pot restaurant as a hot pot side dish, and eat the leftover cabbage, and can also put it in the big water tank to pickle, and can eat for many months. In the case of pulling cabbage in the small vegetable garden, every time I see many jumping insects on the cabbage leaves, I will figure out that this is the cabbage worm again. The actual effect of using the grass ash of the farmhouse to control the small cabbage green worm is very good, and they have used this method for many years, the specific method is that when the water dew is dispersed in the morning on a sunny day, after the dew rises at dusk, the grass ash prepared in advance is evenly sprinkled on the surface of the cabbage leaves, so that the grass ash can be firmly adhered to the cabbage leaves and is not easy to fall, the cabbage green insects will block their vents when they eat the leaves, and they will be dragged once every seven days, the actual effect of metallurgical control is very good, and it is not easy to recur the problem of the lai green insects gnawing the leaves. Cabbage worm is one of the key insect pests of Chinese cabbage. The nymph of the cabbage worm is the cabbage butterfly, a cabbage butterfly can lay 100-500 eggs, from the eggs to the juvenile is what we are talking about the cabbage worm needs 4 to 8 days, and then can live daily life for about 18 days, the time of about 18 days is the most serious harm to the cabbage, if the prevention is not timely, it will cause obvious harm to the cabbage and even lose the value of use, but also cause the appearance of soft rot. The most effective green plant-derived medicine to avoid cabbage cabbage worms, I recommend using azadiracht. Indyrdachtin is a broad-spectrum green plant source insecticide, it basically has a repellent effect on all insect pests of green plants, the drug is digested and absorbed by the plant leaves, and the green plant body can be transmitted to the green plant in various positions without residue, and the drug power is nearly 20 days or more, the insect pest is not easy to cause drug resistance, it is the preferred drug for green pollution, and has a certain prevention and control effect on some problems of green plants. Give it a try, if you don't try it, you won't be surprised.

Cabbage cataplexy, this disease mainly appears in the high temperature and rainy season in the south, and it is also prone to disease in the low temperature and high humidity environment during the seedling stage. Seeds and soil are disinfected before planting, and drugs are sprayed after the onset of the disease. Cabbage black rot is prone to disease in high temperature and high humidity climate environment in summer, and improper continuous cropping and fertilization will also lead to disease.

The same planting disinfection treatment of soil and seeds, scientific and reasonable fertilization, balanced matching of various fertility, and drug spraying can be used to prevent and control the disease.

Plantar fertilizer: prevention and control of downy mildew, toxic treatment: prevention and control of black rot, seeds and soil disinfection and spraying in advance:

Cabbage suffering from anthrax, spray nail, thiophanate, plus chlorothalonil. Timely drainage: prevention and control of vitiligo, in daily maintenance, there is stagnant water discharged in time.

When planting, the soil must be very fertile, the seeds must be very high-quality, and fertilizer should be applied in advance, poisonicides should be sprayed, and nutrient solutions should be sprayed, so as to prevent pests and diseases.

Cabbage belongs to the cold vegetables, the suitable temperature for growth is 10 22, not heat-resistant, when the temperature exceeds 32, the photosynthesis is very weak and the respiration is enhanced, and the growth is very weak. Chinese cabbage is a moisture-loving vegetable, and moist soil conditions are required throughout the growing season, especially Chinese cabbage can not lack water in the rosette stage and the core stage. Cabbage soft rot, the virus is generally the seed and soil infected with the virus, to eliminate this disease, to prevent the main, it is best to buy when selecting seeds, the seed company's coated seeds, the land should not be cropped, it is best to separate the stubble, or it is better to plant cabbage every other year.

For cabbage rotten, it is necessary to increase organic fertilizer and calcium fertilizer before planting. 5,000 kg of farm fertilizer, 50 kg of superphosphate, 15 kg of potassium sulfate, plus a small amount of urea per mu can be considered. In addition to spraying fungicides after infection, you can continuously spray 1500 times of Duomei calcium, or 1000 times of Ye Jiamei's liquid 3 times, 1 time in 5-7 days.

In the prevention of this soft rot, try not to plant cabbage with stubble; Second, try to choose a plot with relatively flat terrain and relatively easy to drain, and pay attention to a certain slope is the best; The third is not to simply pursue humidity and flood irrigation during the growth of cabbage, resulting in water accumulation. Avoid planting on low-lying, sticky plots, and avoid Solanaceae, melons and fruits, and cruciferous vegetables before planting plots. You can choose to add 100 kg of water or 70% Dixon 600 times per sachet to irrigate the roots, or you can use 20% Rocronella 600 times or 47% Garinon 800 times once every 7 days, spraying 2-3 times.

Do not over-water. At the same time, it is also necessary to pay close attention to the weather forecast to prevent excessive humidity and high temperature, which can cause the disease to breed. (If you don't have a good grasp of the amount of irrigation, you can water the odd ditch first, and then water the even ditch after a few days.)

The ground tiger, also known as the black silkworm, is one of the main pests that harm cabbage seedlings. Generally, 2-7 generations occur in a year. Prevention and control:

You can remove the bait, cut 50 kilograms of fresh vegetable leaves into pieces, add 90% kilograms of trichlorfon, mix a small amount of water, mix well, according to the amount of 25-30 kilograms of mu, and sprinkle it into the field according to the ridge before dark or early in the morning.

Choose a plot of land with higher terrain and good drainage to plant, so as to avoid excessive soil water accumulation and lead to the phenomenon of rooting, in the early stage of growth, in case of high temperature climate, you can go to shading measures to prevent high-temperature roots; Seedbed soil disinfection, methyl frost mildew, carbendazim and other soil disinfection, and can also treat cataplexy and blight.

The most important thing to do is to carry out a large amount of fertilization in time, so as to ensure that such root rot can be avoided, and in this case can be improved to a certain extent.

The plots with severe disease were rotated with non-cruciferous plants for 6 years, cultivated in high ridges, drained in time after rain, lime was applied to acidic soil to adjust pH, phosphorus fertilizer and potassium fertilizer were applied to improve soil fertility, and diseased plants were removed in time to be buried or burned.

1. The preventive measures of soft rot should also avoid planting on low-lying and heavy plots, and avoid Solanaceae, melons and fruits and cruciferous vegetables before planting plots. At the onset of the disease, it can be sprayed with agricultural streptomycin sulfate or neophytomycin, once a week, and sprayed 2-3 times continuously depending on the condition. 2. Choose a plot of land with higher terrain and good drainage to plant, so as to avoid excessive soil water accumulation and lead to the phenomenon of rooting, in the early stage of growth, in case of high temperature climate, you can go to shading measures to prevent high-temperature roots; In the later stage of growth, the low temperature can be increased by mulching and fertilizing to prevent low-temperature rooting.

During planting, weeding can be done through tillage to increase the permeability of the plant, so that the root system can breathe and stretch normally, and in the later stage of growth, tillage can also improve the low temperature, so that it can reduce the probability of frost damage. Drain water in time after rain to prevent rain and waterlogging, and it is strictly forbidden to flood irrigation when watering, so as not to root up.

When planting Chinese cabbage, water more and control its growth temperature to 20, so that the cabbage will be in good condition and better quality.

You can remove the rotten bumps on the Chinese cabbage, or you must pay attention to more topdressing and watering when planting, and you can plant Chinese cabbage with a relatively high appearance.

can only be disposed of at a low price, and such cabbage will definitely not be able to continue to be sold at the original price, and it will not be sold.

The condition of cabbage rot is because the outer leaves of the vegetable balls are good, but the heart leaves rot from the edge to the inside, causing sandwich rot Disease conditions Chinese cabbage soft rot is a bacterial disease, the pathogen of which is the parenchyma Owenella that invades from the wound of the vegetable plant. Therefore, the occurrence of soft rot is related to the number of wounds on the plant. The resistance of Chinese cabbage to the disease was reduced in the hearting stage, and soft rot occurred at low temperature in the rain.

Photosynthesis is weak, respiration is enhanced, growth is very weak, Chinese cabbage is a moist vegetable, the whole growth period needs moist soil conditions, especially Chinese cabbage can not lack water in the rosette stage and carpet stage. Cabbage soft rot, the virus is usually contracted through seeds and soil. To eradicate the disease, prevention comes first, and it is better to buy seeds when selecting seeds.

Seed companies do not harvest seeds and land continuously, and it is better to plant cabbage every other year. For Chinese cabbage root rot, we can choose high-terrain, well-drained plots or ridges to plant to prevent water accumulation in the field. In the early stage, it is necessary to properly shade the high temperature, and pay attention to the cultivation in the later stage to maintain proper soil moisture.

If soft rot is found, avoid continuous cropping. Soft rot is also a soil-borne disease. Bacteria can overwinter in the soil and then continue to harm bok choy the following year.

The rot at the base of the petiole is invaded from the wound at the base of the vegetable side, forming a water-infiltrated area, gradually expanding and softening, turning to a light gray-brown color, and finally the leaves are completely rotten. When most of the leaves are infected, the entire plant collapses. The whole plant wilts and rots the pathogen directly invades from the roots of the seedlings, and the whole plant grows slowly and the outer leaves wilt.

During the rosette stage, vegetable plants can be seen withering at noon on a sunny day, but sooner or later they will recover. The outer leaves of the diseased plant lie flat on the ground, the heart or bulb is exposed, and the pith tissue at the petiole or rhizome ulcerates, which collapses with the slightest touch. If crop rotation conditions are not available, fungicidal pesticides should be sprayed before sowing.

Don't use urea blindly. Urea is the solid fertilizer with the most nitrogen content. Although Chinese cabbage has high requirements for soil moisture, it cannot withstand frequent rainy weather, and can be regarded as a crop that is afraid of waterlogging.

It is further extended to the high soil moisture and even the accumulation of water in the garden, which causes the root soil of Chinese cabbage to be impermeable, thus causing the phenomenon of root rot. The amount of irrigation should not be too large.

Crop rotation of wheat and gramineae in severe disease fields can reduce the occurrence of diseases, change the planting method, change the traditional flat furrow planting to ridge planting, the best controller, in the early stage of core cover collection, you can choose the agent Chunleimycin, Zhongshengmycin, copper hydroxide suspension, copper sulfate, basic copper sulfate, chlorobromoisocyanuric acid, etc. For patients with more serious conditions, root irrigation can be carried out, such as high-efficiency and low-cost chlorbromoisocyanurate copper sulfate, etc., large-scale irrigation or drip irrigation can also be used, hoping to help everyone. At the same time, it is necessary to pay close attention to the weather forecast to prevent diseases due to excessive humidity and temperature.

If you can't get a good grasp of the amount of irrigation, you can water the odd ditch first, and then the even ditch after a few days. If the disease is mild, drugs such as prixclax, dimephalen, or colul may be used early in the disease. These chemicals can be used by root irrigation or by spraying the stem base of the plant.