What pests and diseases should be controlled for large scale radish planting? What are the key point

Generally, the insect pest of radish is relatively simple, the cabbage insect is his biggest pest, this pest mainly feeds on its leaves, and the amount of food is very large, basically a few days a radish leaf will be eaten up, the general farmers will use pesticides to spray the radish when preventing and controlling, in order to achieve the effect of insecticide, but after the pesticide is more, it will not only make the pests have a certain resistance, but also produce a certain pollution to the radish itself, Some experienced farmers will use lime water or plant ash mixed with water to make a solution in advance, and then spray it, which can also effectively achieve the effect of insect repellent.

Pests to be controlled, such as: aphids, cabbage worms, and yellow-striped jumping beetles.

If you need to spray pesticides, you can use lime water or plant ash mixed with water in advance to make a solution, and spray the plants, which can have the effect of repelling insects.

For example, there are cabbage worms, yellow-striped jumping beetles, and aphids. Pesticides must be sprayed in a timely manner during management, and the right medicine should also be prescribed.

There is a saying in our rural Baoding area, called"Good seedlings produce good seedlings, and good seedlings bear good fruits".Therefore, the choice of carrot varieties is very important for us farmers. Our selection criteria are: carrot seed germination temperature is 20-25, seedlings have a stronger high temperature tolerance than radish, so when cultivated in autumn, it can be sown more than 10 days earlier than radish.

The appropriate temperature for fleshy root hypertrophy is 20-22,. The demand for soil nutrients is similar to that of turnips.

After the harvest of the current crops, it is necessary to vacate the land and eliminate the stubble in time, and apply basal fertilizer, the standard amount is 2000 kg of mixed fertilizer, 20 30 kg of superphosphate, and 5 10 kg of potassium sulfate per mu, which are mixed into the soil when deep ploughing. Then fine rake 2 3 times, dry the soil, prepare the land and fertilize, select loose soil plots, after the harvest of the previous crops, clean the pastoral, sprinkle rotten organic fertilizer per mu, 4,000 to 5,000 kilograms, add 150 kilograms of grass and wood ash, turn more than 25 centimeters deep, and rake fine crops.

Carrots, carrots are planted in July every year. Carrots require high temperatures at the seedling stage, and a cooler climate is required at the later stage when the roots are hypertrophied. And the growth period of carrots is relatively long, in order to improve the yield and quality of carrots, we must first choose a suitable plot, it is recommended to choose loam and sandy loam soil with high terrain, good drainage, deep soil layer, loose and fertile soil.

If carrots are planted on heavy soil, the yield and quality will be seriously affected.

When you first start planting carrots, according to the local land and water and fertilizer conditions, determine whether to sprinkle seeds or transplant carrot seedlings. The temperature in spring is still relatively low compared to summer, so when choosing seeds, you should choose cold-tolerant seeds, and secondly, the time for sprouting is later, so it is okayChoose small varieties that are early or medium ripe。After sowing seedlings, they grow to 4 to 5 cm for top dressing and watering according to soil injuries.

Technology: (1) Carrots can be planted with a growth period of 90-110 days, and the variety adaptability should be strong, and it should be able to withstand high temperature and low temperature, and also have certain disease resistance and high yield. (2) The suitable planting time for summer and autumn carrots in the north is mid to late July, and the latest should not exceed the beginning of autumn.

Autumn planting carrots can generally use dry seed seeding, in order to improve the emergence rate, before sowing can also be used to soak the seed germination method. (3) When watering, the method of furrow irrigation can be adopted, and the amount of watering should be wetted on the furrow surface. Be sure to ensure moisture during the germination of carrots, which is conducive to the emergence of seedlings.

Black spot control method: 50% promethane wettable powder for seeds, or 50% Fumei double wettable powder, 40% seed dressing and double seed dressing after sowing; Implement a two-year crop rotation; increase the application of basal fertilizer and top dressing;

Soil management: Carrots require deep, fertile, humus-rich, well-drained, sandy soils. Clayey soil or poor drainage is prone to root disorientation, cracking, and even root rot, which is especially unfavorable for long-rooted varieties.

The tillage layer should generally not be shallower than 30 cm, and the moisture content is 60%-80%. The soil is too dry, the fleshy roots are small and rough, the shape is not in order, and the texture is coarse and hard. If the soil moisture is too large or the change of dry and wet is too large, the fleshy root surface will have more nodules and more cracked roots, which will affect the yield and quality.

Carrots require soil pH of 5-8, and when pH is below 5, carrots grow poorly. Before sowing, it is necessary to prepare the field, which is rich in organic matter, soft sandy soil, good drainage performance, and deep tillage layer. The fertilizer is based on organic fertilizer.

After application, the tillage is fine and evenly raked, and fertilization is best carried out 3-5 days before sowing. When insect pests occur, they should be sprayed in time for control. Spray the drug thoroughly, especially on both sides of the leaves, cabbage leaves, and the wrinkles on the back of the leaves.

It can be sprayed with 5% pyrethoxamite, or 10% imidacloprid 1500 times, or matrine aqueous solution 1000 1500 times, or 25% thiamethoxam water dispersible granules 6000 8000 times.

<>1. Agricultural prevention and control: reasonable intercropping, intercropping, crop rotation; selection of disease-resistant varieties; strengthening field management; apply well-decomposed organic fertilizer; enhanced moisture management; Eliminate diseased and weak seedlings in a timely manner. 2. Physical prevention and control

using black lights, sweet and sour liquid, and sexual attractants to lure and kill insects; Use silver-gray membrane to avoid aphids, and use yellow plates to kill aphids. 3. Biological control: different pests and diseases can be treated with different pesticides, aphids and cabbage insects can be sprayed with 600-700 times of 1% matrine aqueous agent.

1. Agricultural prevention and control.

1. Reasonable intercropping, intercropping, and crop rotation.

2. Choose disease-resistant varieties, and when harvesting in autumn and winter, we should strictly select disease-free plants to reduce the source of toxicity next year and reduce the toxicity of seeds. Autumn sowing is timely and late sowing, so that the whole period can avoid the high temperature and dry season, and the sowing in the cold season that is not easy to get sick can reduce the occurrence of diseases such as lameness.

3. Strengthen field management, intensive farming, eliminate weeds, and reduce usurpation.

4. Apply fully decomposed organic fertilizer.

5. Strengthen water management to avoid drought.

6. Eliminate diseased and weak seedlings in a timely manner.

2. Physical prevention and control.

1. Use black lights, sweet and sour liquid, and sexual attractants to lure and kill insects.

2. Use silver-gray membrane to avoid aphids, and you can also use yellow plates to stick to kill aphids.

3. Use insect nets to cultivate aphids and viruses, and carry out soil disinfection at high temperatures in summer sheds.

3. Biological control.

1. For diseases such as downy mildew on radish, black spot on radish, white spot on radish, white rust on radish and charcoal maggot disease on radish, 77% copper hydroxide wettable powder can be sprayed 600-800 times liquid with 77% copper hydroxide wettable powder, 800 times liquid with 50% copper oxychloride wet powder, or sprayed with 200-300 times liquid with 5% water agent, or sprayed with stone sulfur mixture, Bordeaux liquid, etc.

2. Radish soft rot, radish soft rot, etc., can be sprayed with 72% streptomycin sulfate soluble powder 3000-4000 times liquid spray or 2% pyrimidine nucleoside antibiotic aqueous agent 150-200 times liquid irrigation root control.

3. Aphids can be sprayed with 400-500 times rotenone emulsifiable concentrate, and cabbage worms can be sprayed with 800-1000 times of 10 billion live Bacillus v. v. d'Azureus wettable powder. Aphids and cabbage worms can be controlled by spraying 600-700 times of 1% matrine aqueous agent.

Eat radish in winter and ginger in summer, and eat a bowl of hot radish beef offal and radish stewed mutton in the cold winter, how comfortable it should be, warm from the mouth to the stomach. There are many vegetable farmers who grow radishes in China, so what are the key points of how to achieve high yield of radishes?

1.Land selection and land preparation.

2.Sow. Radishes can be sown from mid-February to early April and from mid-to-late July to early October, but it is best to sow in September. When sowing, choose to sow according to the situation, sowing and hole sowing, cover with culture soil after sowing, and then water.

3.Seedlings and seedlings.

Radish seedlings are seeded after the appearance of true leaves, and seedling setting is carried out when the seedlings have grown to 6-7 true leaves. During the thinning and seedling setting period, care should be taken not to injure the seedlings and not to bend the seedlings.

4.Fertilizer and water management.

Radish is not drought tolerant, so it is necessary to determine the number of watering times and the amount of watering each time according to the amount of precipitation, the level of groundwater and other conditions, and at the same time, it is also necessary to flexibly grasp the different growth and development stages of radish. After the radish base fertilizer is applied sufficiently, it is generally only necessary to fertilize after the end of the squatting seedling period and the rapid expansion period of fleshy roots during the growth period, and the amount of fertilizer is determined according to the specific situation.

5.Pest and disease control.

The main diseases of radish are soft rot, black rot and mosaic virus disease, aphids, vegetable borer, cabbage worms, and diamondback moths. Growers should take precautions in advance and spray pesticides for different situations.

In addition, radish should be cultivated once before the seedling stage to the closure of the row, and weeding and loosening the soil according to the actual situation.

6.Leaf picking. What we bought on the market is a radish with a light light, in fact, when it is growing, it has a lot of leaves on it, and it is very helpful to remove some leaves properly a month before he harvests, which is very helpful to increase the yield. Because at this time, the leaves are also growing, and the nutrients will be consumed when they grow on it, but if you remove some of the leaves, these nutrients that would have been consumed can be used up to his fleshy roots, so that getting sufficient nutrition is naturally very helpful for increasing yield.

Turnips are common in rural areas, and many people will grow some in their fields. After all, it has a unique taste and health value that makes everyone's body healthier. Of course, it also has medicinal properties.

For example, it strengthens the stomach, promotes digestion, and also relieves diarrhea, which has a high effect on eliminating food accumulation. Because of its relatively high nutritional value, many farmers will grow it so that it can be used in the market with a good ****. How should autumn radishes be planted?

What diseases should I look out for? How can these diseases be prevented?

First, disease prevention and control.

If there is black rot, the diseased plants must be cleaned and disinfected with lime water to avoid damage to the radish. Soft rot mainly occurs in roots, stems and leaves, and the diseased plants should be removed in time and disinfected with lime water. Downy mildew is aimed at leaves, so everyone must spray pesticides in time so that the disease can be solved in time.

Second, how to increase production.

1) Plot selection, green radish, belongs to deep-rooted plants, the requirements for soil are not very strict, and the requirements for different types of soil are different. In general, it is recommended to plant in deeper irrigation and drainage areas with softer soils.

2) Bury the ground deep before planting and fertilizing. Basal fertilizer must be applied adequately. Mix the base fertilizer with the soil and then rake the ground with a rake. When ditching, each row is about 1 square meter apart and exposed to the sun for a period of time.

3) The sowing time is different in different climatic and environmental areas. Most farmers choose to plant in August and then harvest around October. The most commonly used sowing methods for green radish are drill sowing and sowing. When sowing, try to choose a cloudy day, and the row spacing is generally about 60 cm.

4) When the green radish seedlings have grown to 4 - 5 cm, it is time to start the first thinning work. The recommended spacing is about 4 to 5 cm. During this time, you can water once a week.

When the seedlings have developed 4 to 5 true leaves, a second leaf thinning is required, maintaining a distance of 30 to 40 cm between each plant, supplemented by shallow tillage.

Radish is a vegetable commonly planted in the north, generally in order to increase the yield will take the practice of pinching leaves, pinch off a part of the leaves to prevent the leaves from consuming too much nutrients, so that the nutrients are concentrated to supply the rhizome, so that the size of the radish is large. At the same time, the rational application of phosphate fertilizer and nitrogen fertilizer can effectively prevent the occurrence of diseases.

When planting, remember to kill and sterilize, spray some pesticides after planting, and add some fertilizer, so that it can be prevented.

To do a good job in preventing pests and diseases, we should prune branches and leaves regularly, use pesticides and fertilizers in a timely manner, strengthen water and fertilizer management, and ensure soil fertilizer.

Spray pesticides on time according to the growth situation, so that you can prevent insect infestations, and radish is a very nutritious food.

Carrots contain high carotene, which may prevent certain diseases caused by vitamin A deficiency. The saccharification enzyme in radish breaks down starch, fat, and other food components, which is beneficial for the body to absorb and use. It prevents aging, has a cosmetic effect, vitamin A has a protective effect on the eyes, can ** night blindness, and is very beneficial for eye health.

There are also many biological effects in carotene.

Carrots are good for health and longevity. Carrots can supplement carrots, prevent night blindness, prevent hardening of the arteries, and improve cardiovascular elasticity. Eating carrots regularly lowers blood pressure and strengthens the heart.

Carrots are rich in folic acid, which can prevent a variety of diseases and help a variety of diseases, carotene can be converted into vitamin A in the body, which helps to improve the body's immune function and plays an important role in preventing epithelial cells from becoming cancerous.

What are the common diseases of carrots during the planting of this vegetable? During the growth of carrots, if water is not added as normal, the moisture is extremely low or very low, and the soil moisture is high and low, resulting in abnormal growth of carrots and cracks. During the growth of carrots, according to their own needs, they should replenish water in time, but the amount of watering should not be too large, and if there is a lot of rainy weather, such a rainy climate will lead to soil irrigation, and it should be drained in time.