Can topdressing fast acting fertilizers and spraying foliar fertilizers improve wheat in the cold sp

No, because the wheat that is cold in spring is due to the slowing down of metabolism due to the drop in climate temperature, and it cannot be absorbed even if fertilizer is applied.

In this way, it can improve the wheat that encounters the cold spring, and can quickly replenish nutrients for the wheat, so that its root system is more developed and adaptable to such cold weather.

If foliar fertilizer is not applied properly, it will not only be useless, but will also cause pesticide damage to crops. Foliar fertilizer application needs to be targeted. There are many types of foliar fertilizers. When the basal fertilizer is insufficient, foliar fertilizer containing nitrogen, phosphorus and potassium should be selected, and when the basal fertilizer is sufficient, trace element foliar fertilizer should be selected.

The dosage of top dressing, urea in 15 25 kg, carbon amine can be used to 50 75 kg, and the topdressing should be mainly based on the jointing stage.

Scientifically determine the amount of topdressing in wheat in spring.

Generally, the amount of spring topdressing in wheat fields, urea is 15 25 kg, and carbon amine can be used to 50 75 kg. The specific dosage should be "four combinations":

The first is combined with the application of base fertilizer. If the amount of base fertilizer is as recommended when we sow wheat, the ratio of nitrogen, phosphorus and potassium is reasonable, and the total amount is sufficient, then you can apply more spring topdressing to achieve high yields. If the amount of base fertilizer applied to wheat is insufficient or the combination is not reasonable, especially the application of phosphorus and potassium fertilizer, then there is no need to chase too much nitrogen fertilizer, so as not to cause waste and cause late ripening.

The second is to combine the seedlings. Before winter, because more nutrients are consumed before winter, more nitrogen fertilizer can be chased in spring.

The third is to combine the soil water and fertilizer retention capacity. In order to improve the fertilizer utilization rate, it is necessary to top dressing in stages, and the total amount of top dressing can be appropriately increased.

Fourth, it is necessary to combine management. If fertilization is required in the regreening stage, then wheat needs to be fertilized at least twice in spring, so that the total amount of spring topdressing also needs to be appropriately increased.

If the overall planting benefit is considered, the effect of water-soluble fertilizer will be better, which can improve the drought resistance and stress resistance of wheat, and the wheat grows well.

Wheat rejuvenation stage refers to the last stage of wheat seedling stage; During this period, the heart leaves of the rice seedlings in the early spring wheat fields now begin to grow, and the duration is about a month; The growth characteristics of wheat in this period are long roots, long leaves, and heading; In terms of management, it is also a critical period for stiff seedlings to promote growth, manipulate vigorous seedlings to grow vigorously, and determine the size of the spike rate. Therefore, the management method is crucial at this time. Many farmers also fertilize wheat at this time to promote wheat growth and lay the foundation for a bumper wheat harvest.

The use of green fertilizer should be used according to the fertilizer efficiency of the soil and the growth of wheat, in northern China, generally through a relatively long winter, the winter temperature is cold, not conducive to wheat absorption of nutrients, and with the wheat planting sprinkled into the ground of the bottom fertilizer, in the snowfall or sunlight and other natural changes under the conditions, has already flowed out, volatilized off the vast majority, so in North China generally to apply green fertilizer as early as possible, the fertilizer standard is: "base fertilizer with more fertilizer as little as possible to apply back to green fertilizer, base fertilizer, The source of the weak seedlings should be accompanied by more green fertilizer."

How much is the fertilization of wheat back to green, but also according to the rise of rice seedlings to determine, for late-sown seedlings, plant stiff seedlings should be heavily fertilized, improve the heading and panicle rate; The abundant land indicates that the early fertilizer effect is sufficient, and the seedlings should be applied as little as possible or no top dressing to return to green fertilizer. The purpose of fertilizing the best time for wheat to regreen is to determine the gray according to the development process of rice seedlings. Some basal fertilizers should be used as much as possible when applying rejuvenating fertilizer, and phosphorus and potassium fertilizers should be used in conjunction with each other to meet the needs of fertilizer efficiency during wheat heading and heading.

Wheat regreening fertilizer specifically refers to the first fertilization of wheat after winter, the growth period of wheat includes regreening, standing up, heading, booting stage, flowering, grouting and other stages, the first fertilizer after winter in the regreening period, so it is sometimes called regreening fertilizer. When to apply green fertilizer is determined according to soil moisture and seedling conditions, because watering reduces the temperature of the soil layer, so early spring is not suitable for early watering and flooding, the other is based on the seedling situation, three types of less than (the number of basic seedling stems below 450,000) can be watered in the green period at the same time top dressing urea solution 8-10kg, pay attention to hoeing hail after watering to raise soil temperature.

Generally speaking, top dressing should be carried out before the beginning of spring. In this way, the wheat can absorb nutrients in time and make the wheat grow quickly.

Under normal circumstances, if farmers fertilize Xiaodaweimai immediately after the Spring Festival, it will destroy the growth environment of its inherent annihilation cover. It is generally known that the recultivation will stay for one to two months, and wait until late March to fertilize the wheat. In fact, the purpose of turning green manure on wheat is to make the wheat grow faster and make the grains fuller in the next harvest season.

This needs to be done before the beginning of spring, so that the top dressing can be carried out reasonably and the plants can grow better.

1. Wheat topdressing should be adapted to local and seedling conditions, and fertilizer and water management should be carried out scientifically;

2. For wheat fields with normal growth and high fertility level, jointing fertilizer should be reapplied in combination with watering during the jointing period;

3. For medium fertility wheat fields, fast-acting chemical fertilizers can be applied in combination with watering and spraying new high-fat film at the rising stage to improve the utilization rate of the active ingredients of chemical reed limb fertilizer;

4. On the basis of hoeing in early spring, top dressing should be carried out twice at the rejuvenation stage and jointing stage, and Zhuangpingling should be sprayed to promote spring tillering into ears, improve the panicle formation rate and promote the development and fruiting of small flowers, and increase the number of grains per panicle;

5. For the late stubble seedlings that have not applied base fertilizer or have a small amount of fertilizer during sowing, they should be topdressed by moisture when the soil has just thawed, but it is not advisable to water back to green water, so as not to cause the ground temperature to drop and the soil permeability is poor, which will affect the growth of wheat plants.

The fertilization method of spring wheat is not good before winter, and the wheat field that is sowing early and suddenly defertilized for a long time can be supplemented with green manure as soon as possible, generally when the ground begins to thaw, about 20 kg of ammonium bicarbonate can be applied per mu, and about 15 kg of superphosphate can be mixed with phosphorus deficiency wheat field. Wheat leaves are light green, the leaves are falling, there is no fertilizer and water phenomenon, large groups of wheat fields generally do not apply nitrogen fertilizer or a small amount of nitrogen fertilizer, and can apply about 10-12 kg of phosphorus and potassium fertilizer. Poor soil fertility, late sowing time, poor growth at seedling stage, less tillering per plant, less population of wheat fields, can be applied about 6-8 kg of urea per mu, can also be combined with superphosphate and potassium chloride 5-6 kg.

If it is a wheat field with more seedlings or more vigorous and no fertilization, it is not necessary to apply green manure, and it can be postponed to the rising stage to control ineffective tillering, so as to improve the tillering rate and increase the number of acres per ear.

<>What fertilizer is good for spring wheat fertilizationFor wheat fields with high soil fertility levels, a sufficient amount of organic fertilizer should be applied before sowing. In general, nitrogen fertilizer should be applied sparingly in spring and phosphate and potassium fertilizer should be applied appropriately. For wheat fields with poor soil fertility, especially wheat fields with insufficient fertilizer due to the influence of rain before sowing, more nitrogen fertilizer should be applied, and phosphorus and potassium fertilizers should be applied.

It fully meets the requirements of fertility during the wheat bonding period.

Generally speaking, spring wheat topping needs to be combined with watering, so when choosing fertilizers, it is necessary to choose varieties with strong water solubility. The time and method of spring wheat topping, wheat management watering is very heavy, spring wheat management watering is very important, winter wheat from the green to the flag is the spring growth stage, generally lasting 45-65 days, is the key period for yield formation. Therefore, it is very important to increase wheat yield in spring management, in which fertilizer and water management are the main factors.

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Seed fertilizer should be applied. Nitrogen, phosphate, potash. You can sprinkle the fertilizer on the surface of the soil, bury the fertilizer in the soil with the seeds, or we can choose to dilute it with water and spray it. It is necessary to ensure timely ventilation and weeding. Plenty of sunlight and continue draining.

When fertilizing during the Spring Festival, you should water in advance, chase the fertilizer on the roots of the wheat, or you can mix the fertilizer and water evenly and water it directly in the wheat field. Be sure to water more after fertilization, especially when heading should be supplemented with enough potassium fertilizer and compound fertilizer.

Wait for the rain to apply fertilizer, sprinkle the fertilizer on the edge of the wheat in the morning, apply some organic fertilizer when fertilizing, fertilize at sunset, you can spray some nutrient solution, so that fertilization will not cause wheat to wither.

Fertilization should be applied after rain, 5:00 a.m. 10:00 a.m., 4:00 p.m. 8:00 p.m. is the best time to fertilize, when fertilizing should first remove weeds, choose the right fertilizer, fertilize from the roots.

To promote fertilization, it is necessary to grasp the growth time of wheat, fertilize at the right time, manage fertilization in the green season of wheat, and do a good job in insect prevention and disease prevention.

Fertilization should be applied after rain, 5:00 a.m. to 10:00 p.m. and 4:00 p.m. 8:00 p.m. are the best times to apply fertilizer. When fertilizing, the weeds should be removed first and the appropriate fertilizer should be selected. Fertilization is applied from the roots.

Spring wheat field management, first in the spring to emergency fertilization and weeding, rainy days directly fertilizer can be, if drought to timely water and fertilization, because after the beginning of spring in the south of the weather slowly warmed up, wheat seedlings grow rapidly, can not be timely fertilization and weeding. Time waits for no one, if the fertilization is late, the light grows and clears him, and the wind blows to prepare the land, there is no harvest, and the work is in vain. As the saying goes, when the grain is poured into the barn, the wheat becomes a handful of chaff.

Therefore, it is very important to grow grain and grasp the season, and know what to do in what season. Field management: remove weeds in time, spray three preventions on wheat seedlings, and replenish water in time when the soil moisture content is insufficient.

In particular, you must pay attention to pests and diseases! Pest and disease control is key to spring wheat.

<> fertilization: Wheat fertilization in spring is a little late, and those who can not be fertilized should try not to fertilize to prevent wheat from being greedy for green and late maturing, and harmful to dry and hot wind. If the wheat is deficient in fertilizer, it is beneficial to fertilize the wheat through extraroots.

There are many agricultural material stores outside the roots, and you can choose and buy them at will. Nitrogen fertilizer is mainly applied at the greening and fruiting stages of wheat. The main types of nitrogen fertilizer are caramide and urea.

Carbamide is a neutral fertilizer, soluble in water, and easily absorbed and utilized by wheat in a short time. The disadvantage is that after fertilization, the absorption and utilization rate of available nitrogen is low, because carbonamide is easy to lose nutrients in the soil, so that the available nitrogen is reduced.

Compared with carbaamide, urea has better stability and higher utilization rate of available nitrogen, but urea has the characteristics of ordinary urea and controlled-release urea, which can reduce nitrogen loss in fertilizer and increase fertilizer efficiency by 10 to 15%. The fertilizer effect time is longer, up to more than 3 months. The plan of the year lies in the spring, and the management of the spring wheat field is the premise of winning the summer harvest.

The growth period of spring wheat includes wheat seedling turning, ridge formation and wheat jointing, which is the most important vegetative growth stage of wheat. Field management of spring wheat mainly includes: digging soil to increase temperature; Watering back the green water and applying green manure; watering and water-saving, topdressing jointing fertilizer; weed removal in the field; control long, anti-root; wheat pest control, etc.

As the saying goes"You are wrong for a while, and you are wrong for a year", grasp the growth law of wheat, do a good job in the field management of spring wheat, and lay a solid foundation for the growth of wheat in the later stage.

In the spring, it should be fertilized and weeded, and when it rains, the fertilizer can be sprinkled directly on the soil, and if there is dry weather, it should be watered and fertilized, and more compound fertilizer and nitrogen fertilizer should be used, and it should be tested with water when used.

When fertilizing, we must choose the right base fertilizer, we must choose farmhouse fertilizer, we must sprinkle fertilizer in the ditch in the process of fertilization, we must be even, and we must use some environmentally friendly fertilizers, which can reduce soil pollution.

A layer of urea should be sprinkled on top of the wheat and watered after a week of urea, so that the urea can fully penetrate into the soil. Nitrogen fertilizer is applied again after a month to increase the nutrients of the land.

Wheat is a very important crop for farmers, and many farmers make a living by selling wheat, so how to make wheat achieve high yield and good quality is a problem that farmers are very concerned about. <>

Most of the crop yield wants to get a relatively high degree, then it is necessary to fertilize, and wheat is the same, every spring, farmers need to do spring management of wheat, and according to the growth of wheat is different, to apply different fertilizers to wheat, for wheat, because it is planted in a large area, so there will be a variety of differences, at this time to fertilize wheat, we must first fertilize the low part, let it grow to a suitable height, so that the management of wheat can be carried out in a unified way, Otherwise, if a large amount of top dressing, it will lead to the growth of some wheat too vigorously, and the phenomenon of lodging is easy to occur in the later stage, resulting in reduced yield. <>

Secondly, experienced farmers should know that the water and fertilizer retention capacity of each piece of land is different, so it must be judged according to the situation of previous years, and correctly identify which land has a better water and fertilizer retention capacity and which land is poorerWhen applying fertilizer in the spring, be sure to apply more fertilizer in the area where the ability to retain water and waste is poor.

At the same time, it is also necessary to pay attention to the growth of wheat seedlings when fertilizing, some wheat may be green to that extent, but some wheat has reached the level of yellowing, so in this case, apply fertilizerIt is necessary to apply more fertilizer to the yellowed wheat in moderation, and normal plots can be as long as they follow the normal amount.

Fertilizer is also a more important thing for farmers, and the correct fertilizer application can make wheat or other crops reach a high product quality to the degree, if you are just starting to plant wheat, you can consult the surrounding farmers, do not shave your head and pick a hot head, let yourself ** buy back wheat seedlings are all in vain.