After the tomato is planted, when is it good to spray

After the tomato is planted, water the root water, and spray rooting agent + mildew nail + amino acids at the same time.

Foliar fertilizer + potassium dihydrogen phosphate.

Spray again every 5-7 days. It can prevent the occurrence of soil-borne diseases, slow down the seedlings quickly, and grow well.

Tomato growth is normal, to prevent and control tomato early blight, choose difenoconazole, flusilazole, azoxystrobin, iprodione, bromonitrile, pyraclostrobin spray control, and spray again every 5-7 days.

To prevent and control tomato late blight, use methyl manganese zinc, frost urea manganese zinc, enoyl manganese zinc + silicone spray control, and spray again every 5-7 days.

To control tomato leaf spot diseases, benzene is used. Azoxystrobin, prochlorazaz manganese salt, difenoconazole, benzo. Etherstrobin, flusilazole + foliar fertilizer spray control, spray again every 5-7 days, spray 2-3 times.

Tomato bacterial diseases can be controlled with copper hydroxide, octylamine, mesomycin, leaf dryazole, and agricultural streptomycin, and then controlled at an interval of 5-7 days.

Aphids are also controlled.

whiteflies, thrips, mites. Harm.

After tomato planting, it can generally be sprayed about 20 days after transplanting. Spraying method: Generally, 25% azoxystrobin (100 ml) + 70% imidacloprid (400 grams) + 5% avermectin (1000 ml) can be mixed with 200 kg of water, and then sprayed with a nozzle aimed at the base of the stem of the tomato (50-100 ml of liquid medicine per plant).

Tomatoes can generally be planted about 20 days after planting seedlings. Spraying method: Generally, 25% azoxystrobin (100 ml) + 70% imidacloprid can be used per mu.

400 g) + 5% avermectin.

1000 ml) mixed with 200 kg of water, and then sprayed with a nozzle aimed at the base of the stem of the tomato (50-100 ml of liquid medicine per plant).

Tomatoes can generally be planted about 20 days after planting seedlings.

Spraying method: Generally, 25% azoxystrobin (100 ml) + 70% imidacloprid (400 grams) + 5% avermectin (1000 ml) can be mixed with 200 kg of water, and then sprayed with a nozzle aimed at the base of the stem of the tomato (spraying 50-100 ml of liquid medicine per plant).

This mainly depends on what pests and diseases you need, and you need to decide what pesticides to use according to the pests and diseases.

Tomato transplanting about 15 days after fertilization, at this time the tomato has been fully lived, we need to apply some seedling fertilizer for it, when planting tomatoes, to apply basal fertilizer in the soil, tomato growth and fruiting period to regular top dressing, but also to spray some foliar fertilizer to promote its fruit growth, pay attention to fertilization to master the principle of thin fertilizer diligent application.

days or so

Tomato seedlings need to be fertilized after transplanting, generally applied about 15 days after transplanting, at this time tomato seedlings have completely survived and begun to grow, we can apply seedling fertilizer for it, so as to promote its root system and stem and leaf growth, fertilizer can choose organic fertilizer.

2. Apply basal fertilizer

The growth of tomato needs sufficient nutrients, so when planting it, it is necessary to apply rock closure in the soil and add some well-rotted organic fertilizer and phosphorus and potassium fertilizer as base fertilizer to improve the fertility of the soil, otherwise if the soil is too poor, it will be difficult for the tomato to grow vigorously, and the yield will be low when it bears fruit.

3. Carry out top dressing

Tomato in the growth period, need to be topdressed, in its flowering and fruiting period, need to be topdressed, each time after harvesting the tomato skin, also need to be topdressed once, in its fruit growth period can also be sprayed with some potassium dihydrogen phosphate solution as foliar fertilizer, which is conducive to the growth and ripening of tomato fruits.

4. Precautions

When fertilizing tomatoes, it is necessary to pay attention to the principle of thin fertilizer and diligent application, and can not apply raw fertilizer or thick fertilizer to it, so as not to produce fertilizer damage to tomato plants, and also pay attention to not partial nitrogen fertilizer, generally combined with phosphorus and potassium fertilizer together fertilization is the best, otherwise excessive nitrogen fertilizer application will affect the flowering and fruiting of tomatoes.

<> planting tomatoes, Changgao is generally tolerant of noise and sprays after planting seedlings for about 20 days. Spraying method: Generally, you can use 25% azoxystrobin (100 ml) + 70% imidacloprid (400 grams) + 5% avermectin (1000 ml) mixed with 200 kg of water, and then use the nozzle to spray at the base of the stem of the tomato (spray 50-100 ml of liquid medicine per plant).

Summary. Kiss, 1. Temperature and humidity control. After entering autumn, the weather is unpredictable, so it is necessary to release the wind reasonably according to the weather conditions every day to reduce the temperature difference between day and night, and promote the simultaneous growth of tomato peel and pulp.

In addition, pay attention to reduce the humidity in the shed as much as possible while maintaining the temperature in the shed. 2. Calcium fertilizer supplementation. Calcium fertilizer needs to be supplemented in advance, not until the lack of calcium, because calcium is a component of the cell wall, and supplementing calcium fertilizer in advance can prevent fruit opening, so it is recommended that tomatoes enter the fruiting period and timely supplement foliar fertilizer rich in calcium, boron and other trace elements Oh <>

What is the best time to apply the medicine when the tomatoes are ripe in autumn.

Hello dear, happy to answer for you! When the tomatoes are ripe in autumn, at nine o'clock in the morning on a sunny day, the cherry sail stall beats yaozui good facilities, tomatoes should be sprayed before 11 o'clock in the morning, and the sedan chair is hungry and <> is messy

If it is summer, it is generally recommended to play yao in the afternoon, because playing yao in the afternoon will avoid high temperature and critical damage after playing yao, and it is generally recommended to play yao in the morning for autumn, spring and winter. <>

In autumn, the tomato temperature is low, and the amount of dew in the shed is increased, and the amount of dew in the shed has no effect on the tomato cracked fruit and teng peel fruit.

Kiss, have an impact Oh <>

Is there any way to fix the peng peel fruit? This problem is most acute with autumn tomatoes.

Dear, do you mean green peel fruit, do you mean green, because the old loss with Yu Shi here has not inquired about the teng peel fruit, so I will confirm the line with you to verify the <>

There are small cracks on the fruit.

Kiss, 1. Temperature and humidity control. After entering autumn, the weather is unpredictable, so it should be reasonably released according to the weather conditions every day to reduce the temperature difference between day and night, so as to promote the blind growth of tomato peel and pulp in the same town. In addition, pay attention to reduce the humidity in the shed as much as possible while maintaining the temperature in the shed.

2. Calcium fertilizer supplementation. Calcium fertilizer needs to be supplemented in advance, not until the lack of calcium, because calcium is a component of the cell wall, and supplementing calcium fertilizer in advance can prevent fruit opening, so it is recommended that after the tomato enters the fruiting period, it is timely supplemented with foliar fertilizer rich in calcium, boron and other medium and trace elements <>

Kiss, 3, reasonable watering. In the recent period of autumn, there are many rainy days, and many vegetable farmers do not water their plants in time, resulting in drier soil than the lack of royal cavity. Because of Yuanhui, the tomatoes during the fruiting period should be watered frequently, and the soil can be kept moist <>

Kiss, you also need to pay attention to some flowers. After the temperature decreases, the concentration of the dotted flower yao will increase when the flower is pointed, but many vegetable farmers increase the concentration of the dotted flower yao at will in order to ensure that the tomato can sit on the fruit when the tomato is dotted with flowers, which leads to the development of terrestrial osmosis malformation in the tomato ovary, and the local physiological function of the fruit is vigorous, causing physiological disorders and producing LIE fruit. Therefore, in order to avoid the phenomenon of lie fruit, the rotten farmer must grasp the concentration of the flower.

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Hello dear, happy to answer for you. The best spraying time should be around 8 to 10 a.m. and 5 p.m. This is because:

At about 9 o'clock in the morning, the general dew has dried, and the temperature is not too high, which is the time when the sexual pests eat, move, and mate vigorously, so the medication at this time will not reduce its efficacy because the agent is washed or diluted by the dew, and it will not affect the efficacy of the agent due to the high temperature. On the contrary, at this time, the use of pesticides will increase the chance of pests eating filial piety and touching the drug, and effectively improve the lethality of pesticides. At about 5 o'clock in the afternoon, the sun has turned west, the light is fading, and nocturnal pests begin to be active (feeding, mating and other activities), so spraying at this time also has a higher killing effect.

<> tomato is a kind of thermophilic vegetable, under normal conditions, the optimal temperature for assimilation is 20 25, and the optimal soil temperature for root growth is 20 22. Light-loving, light saturation point is 70000lx, suitable light intensity is 30000 50000lx. It is also a short-day plant, tomato likes water, and it is generally appropriate to have a soil moisture of 60% and 80% and an air humidity of 45% and 50%.

Tomatoes are less demanding on soil conditions and grow well in deep, well-drained, organic matter-rich loam soils. The pH of the soil should be pH 6 7.

When spring tomatoes are planted, watering should not be too much, and too much water is easy to reduce the ground temperature, which is not conducive to slowing down the seedlings. 35 days after planting, when the color of the heart leaves of the plant changes from old green to tender green, and the growth point begins to grow, it is generally necessary to irrigate a large amount of water to soak the soil mound brought by the nutrient lump or nutrient bag seedling to promote the root system to grow out of the mound as soon as possible, so as to promote the growth of seedlings. After watering, it is necessary to carry out tillage.

After slowing the seedlings to the first flower spike fruit setting period, if there is no special drought, generally do not water, and squat the seedlings are cultivated many times. Tomato seedlings are mainly to promote root development, control plant growth, and adjust the balance of vegetative growth and reproductive growth, so as to facilitate flowering and fruiting. The length of squatting time can be flexibly grasped according to the growth of the plant, the characteristics of the variety and the environmental conditions.

The management of tomato seedling squatting is an important technical link for high yield. Generally, the growth of early-maturing plants is weak, the flower organ differentiation is early, the flowering is early, and the fruiting is early, and the squatting time of the seedlings should not be erected for too long. The growth of medium and late ripening plants is vigorous and strong, and the seedlings should be strictly controlled, and the squatting time of seedlings can be appropriately extended.

When the fruit of the first inflorescence is as large as a walnut, the squatting seedlings are ended.

Tomato squatting seedling period is over to enter the fruiting period, the fruiting period to talk about lead, high fertilizer, enough water, to promote the growth and development of stems, leaves and fruits. Under normal weather conditions, irrigation is generally done once every 46 days, and the amount of irrigation should be gradually increased. During the fruiting period, the soil should be kept moist to prevent it from drying out and getting wet.

Tomato irrigation methods mainly include furrow irrigation, sprinkler irrigation and drip irrigation, among which furrow irrigation is the main one. Tomato cultivation should not only pay attention to irrigation, but also pay attention to drainage and waterlogging prevention in the rainy season. In areas where irrigation conditions are not available, tomato cultivation is best covered with plastic film.

Watering according to the growth period.

Under normal circumstances, tomatoes are planted at the time of watering, and after 3 to 5 days of watering, the seedlings are watered again. When planting seedling water or planting water, water and soil should be used to promote rooting and strengthening. Once the first ear is sitting on the size of the yolk, it is poured in again.

In the early tomato stage, leaf transpiration is small, the number of fruits is small, and the amount of ventilation is small. Usually, water can be poured in 7 to 10 days, and the amount of water should be very small.

Later, with the growth and development of plants, the number of fruit spikes increases, the aeration increases, and the transpiration increases, the watering interval should be shortened, the water should be increased, and the soil should be kept dry and moist (mainly wet), generally watering for 5 7 days, and the soil should be kept moist during the harvest period, or to increase the weight of a single fruit.

Watering according to the characteristics of the stubble.

The planting period of tomatoes grown in winter greenhouses is generally about 10 months. In addition to watering with sufficient water and timely cultivation to maintain soil moisture, in general, neither the first ear nor fruit set can be watered. After watering the fruit, a cover film can be added to retain moisture.

If you need to re-water the film, so as not to lower the ground temperature. After heating, water is added to meet the needs of fruit growth and development. Greenhouse tomatoes cultivated in early spring should be watered promptly after flowering and fruiting.