What are the tips for growing wheat? How should I top dressing during the rejuvenation period?

Rational Farming, Water Storage and Moisture Conservation The cultivation technology of wheat in dry land should be centered on "storing water in the sky and keeping the moisture in the ground", and adopt deep ploughing and moisture storage, shallow tillage and moisture conservation, and rotation cultivation in alternate years, so as to achieve the purpose of using autumn in autumn and autumn in autumn and spring. The pre-crop crop is ploughed early in time after harvest, with a depth of 20 25 cm, and the plot with thick soil layer can be deeply cultivated to more than 30 cm to facilitate the reception of more rain.

Rational Farming, Water Storage and Moisture Conservation The cultivation technology of wheat in dry land should be centered on "storing water in the sky and keeping the moisture in the ground", and adopt deep ploughing and moisture storage, shallow tillage and moisture conservation, and rotation cultivation in alternate years, so as to achieve the purpose of using autumn in autumn and autumn in autumn and spring. The pre-crop crop is ploughed early in time after harvest, with a depth of 20 25 cm, and the plot with thick soil layer can be deeply cultivated to more than 30 cm to facilitate the reception of more rain.

First of all, choose wheat seeds, and be sure to choose wheat seeds with relatively large grains. Choose the right soil for wheat planting, and the soil for wheat planting must be careful not to be too dry and not too wet, especially not to grow wheat in saline-alkali land. After planting wheat, we must pay attention to observation, especially pay attention to the prevention and control of pests and diseases that damage wheat.

Pay attention to irrigation and fertilization, and control pests and diseases. When fertilizing, it is recommended to choose a sunny day and around noon, and choose urea, phosphorus and nitrogen fertilizers to fertilize wheat.

When sowing, you must pay attention to the seeds three days before sowing, and you must master the depth of seed burial when you start planting, and wheat is generally suitable for a depth of about three centimeters. Attention should be paid to the application of nitrogen fertilizer during the regreening period of wheat. Weak wheat seedlings in the regreening stage of wheat can chase about 5 kg of urea per mu.

Skills are: After spring, the wheat should be fertilized due to the seedlings, and the wheat fields and weak seedlings should be topdressed in time. When the surface begins to thaw, top dressing should be carried out to supplement nutrients, so that wheat can resume growth as soon as possible, and promote the rapid growth of weak seedlings.

The topdressing method is: about 9 kg of urea per mu, about 20 kg of ammonia bicarbonate can also be applied, and superphosphate should be mixed with superphosphate for phosphorus-deficient wheat fields, about 15 kg per mu; For wheat fields with light frost severity, when the weather is warm at noon, spray foliar fertilizers such as Yunda 120 to promote the growth of wheat seedlings.

When the wheat is watered, the fertilizer needed for the later growth should be applied sufficiently, otherwise the later fertilization will be excessive, which will easily lead to the late maturity of wheat. However, in terms of cost and duration, its advantages are not worse than urea, and water-soluble fertilizer is more advantageous on cash crops. The best topdressing of wheat dihydrate is urea, not too much, 10-15 kg.

No matter how much it is, it will be easy to get back to green. The second top dressing is when the wheat grows to the inverted two leaves, apply 12 kg of urea, and water.

<> 2 water according to the growth and development of 5-7 kg of urea; If the head water chases more than 25 kg of urea, try not to chase nitrogen fertilizer in two waters, and top dressing fertilizer, it is recommended to use five catties to ten catties of calcium fertilizer, with five catties to ten catties of urea, and sprinkle top dressing. Works best. At this stage, less fertilizer containing more nitrogen should be applied, because the excessive absorption of ammonium nitrogen by crops has a certain inhibitory effect on the absorption of calcium, magnesium and potassium.

However, in terms of cost and duration, its advantages are not worse than urea, and water-soluble fertilizer is more advantageous on cash crops. The disease resistance is enhanced, the fruit buds are full, and the management of diseases and pests should be paid attention to from the beginning of the wheat jointing stage to the heading stage, so as to increase wheat yield and income. These phases have different management requirements.

The rejuvenation stage is a very important stage in the whole growth process of wheat.

There is also some meaning of early spring, but for the weather in the north, the farmers dare not be careless, and the weather says that the face will change. Spring is the key season for wheat topdressing, and scientific fertilization during this period can promote the normal growth of wheat in the next period. Because they are professionals and have a high level of knowledge.

Especially the older agricultural technicians, they have knowledge and experience, which is worth learning from. Causing wheat lodging or reduced yield, so, in early spring, to fly kites in rural wheat fields, simple farmer friends will not say anything. In the northern region, the temperature is sometimes cold and sometimes hot, and it is mostly unstable.

Therefore, it is best to choose to pour back green water when the average daily temperature is 3-5 degrees. Soil moisture in early spring is generally not the main reason for the early emergence of wheat seedlings, as long as the moisture preservation work is done, the head water can be postponed to the front and back irrigation.

Technical points: First, fertilize the soil. It is required that the nutrient content of 0 20 cm soil is greater than 1% of organic matter, total nitrogen is greater than 60mg kg, hydrolyzed nitrogen is greater than 60mg kg, available phosphorus is greater than 15mg kg, and available potassium is greater than 80mg kg.

The second is to select improved varieties. The third is to apply plantar fertilizer. The base fertilizer is mainly farmhouse fertilizer, supplemented by chemical fertilizer, and nitrogen, phosphorus and potassium are combined.

Fourth, deep ploughing and fine harrowing to improve the quality of land preparation. Fifth, insist on sufficient moisture sowing. Sixth, sowing seeds at the right time.

Seventh, the appropriate amount of sowing. 8 120,000 basic seedlings per mu for intensive sowing and 13 180,000 basic seedlings per mu for semi-fine sowing. Eighth, fertilizer and water management.

Generally, winter fertilizer is not chased, and winter water is poured well to ensure the safe wintering of wheat seedlings. Winter wheat seedlings can be divided into groups, individuals two aspects, look at the seedlings, to integrate the group and the individual, if the wheat field belongs to the large group, the individual is prosperous, first of all, it is necessary to properly control its growth, you can use 15% paclobutrazol wettable powder 30-40 grams per mu plus 30 kg of water for spraying, which can effectively control the growth of wheat seedlings.

Secondly, the topdressing time of this kind of wheat field should be delayed backwards, when the wheat seedlings grow to the second leaf, that is, when the wheat ear differentiates to the tetrad, it is just right. It is not good to top dressing wheat seedlings too early, and too late is not conducive to yield formation. For late-sown thin wheat, the length of the first internode of the main stem of the wheat plant has been fixed in early March, and the second internode is being fertilized when it is rising and elongating, so that the stem internode will not be too long and weaken the lodging resistance of the plant.

There is a proverb in the countryside where wheat is grown: "Half of the rice is lost, and the wheat is completely gone." It means that half of the rice can be harvested when it is lodging, and if the wheat is lodging, the grains will not be harvested, because the wheat lodging will germinate quickly, which will also affect the mechanical harvesting.

The reason is that the top dressing treatment has been done when the wheat returns to green watering, and the top dressing of wheat back to green water is often willing to give up the cost, and there should be fifty or sixty catties of fertilizer for one acre of land, which is equivalent to forty or fifty yuan. The organic nitrogen fertilizer is an organic water-soluble fertilizer produced and concentrated by microbial fermentation technology, all nutrients are natural metabolites of the bacteria, which can be directly absorbed by crops without transformation, and can be quickly supplemented with nitrogen, and can absorb more than 60% within 45 minutes after foliar spraying, with fast results.

In wheat fields where the leaves are drooping, the plant population is large, and the tillers are still continuing to proliferate, it is advisable to postpone topdressing for seven to ten days, and apply less or no fertilizer to avoid too many ineffective tillerers. It is not conducive to ventilation and light transmission, it is easy to induce diseases and insect pests, and in case of high temperature and rainy weather, it can make the plant lodging and rotten. Increasing nitrogen fertilizer at the jointing stage will do more harm than good, and the gains outweigh the losses.

The effect of one-time application of nitrogen fertilizer is not as good as that of basal fertilizer plus topdressing at jointing stage. Under the condition of medium water, 2 3 nitrogen fertilizer basal application and 1 3 nitrogen fertilizer topdressing at jointing stage were the best water-fertilizer coupling modes for winter wheat in arid areas. If this is the case, it is certain that the nitrogen deficiency is very noticeable, and the gap is very large.

This is the time to replenish quickly, not slowly.

<> too much bottom fertilizer Observe the wheat leaves, if the number of leaves is too dense, the green is relatively thick, the leaves are relatively large and thick, and they are drooping, the amount of fertilizer should be controlled, and the superphosphate and plant ash should be appropriately applied, which can resist the lodging of wheat in the later stage. If the green fertilizer is not topdressed, the jointing fertilizer can be increased appropriately, try to apply before the jointing, if the green fertilizer is chased, the jointing period can not be topdressed, to avoid excessive fertilization, causing growth, affecting plant development. Fertilizers with high phosphorus content, such as monoammonium and diammonium, are most suitable for use as base fertilizer, and should be applied as base fertilizer at one time, and phosphate fertilizer cannot be supplemented by top dressing.

After winter wheat overwintering, the time from the regreening stage to the jointing stage is very short. Generally speaking, after overwintering, when the first new leaves grow 1-2 cm after the weather is warm, it begins to enter the process of rejuvenation and jointing. In this very short process, it is a critical period for wheat flower bud differentiation, which determines the number of spikes and the amount of florets on the spike differentiation and whether they will degenerate.

In the end, the yield per mu of wheat is more or less, and this period is also an important determining period.

The first point must pay attention to the time of the public, which is the most basic skill, the second point should pay attention to timely fertilization, there should be regular fertilization time, and the third point should pay attention to the temperature must be mastered, so as to achieve good results.

According to the growth of seedlings, nitrogen fertilizer was applied in stages, and the application proportion in the middle and late stages of jointing was appropriately increased. According to the amount of bottom fertilizer, seedling condition, temperature and soil fertility, the amount and time of top dressing were scientifically determined. Because of the land, because of the seedlings, because of the time of top dressing. Seize the favorable opportunity of wheat rejuvenation and jointing, take timely measures to promote and control the transformation of weak seedlings, and improve the panicle rate; Control the vigorous growth of the field, to prevent the lodging of green in the later stage, if the fertilizer is good, the wheat is green and strong.

How to judge the rejuvenation stage of wheat? How to apply the right amount of regreening fertilizer to wheat in different situations? When the temperature of wheat rises in the spring, the leaves of wheat seedlings change from green to bright green, and the exposed part of the heart leaf is the green stage, and the fertilizer is called green fertilizer at this time.

<> how to judge the green season of wheat: due to the different climates in different regions, the time for wheat to return to green is also different. Generally from late February to late March.

Greening refers to the recovery and gradual greening of the overwintering leaves and heart leaves of wheat seedlings after wheat overwintering. Because the temperature of the season is unstable at this time, sometimes hot and sometimes cold, and the temperature difference between morning and evening is large, it is necessary to flexibly master the watering of green water to avoid wheat seedlings. If the temperature of wheat roots is stable, early spring should be timely jointing, timely watering of green water, for wheat drought, can be properly watered, early return to green, but the amount of water should not be too large, crops should be appropriately increased phosphorus, potassium, and need to control the field humidity, strive for more new shoots, or local luxuriation, do not go to fertile wheat fields, do not hit the root fertilizer.

This inhibits the occurrence of wheat sheath blight, powdery mildew and rust.

Regenerated wheat fertilizer can promote the growth of wheat seedlings, which is mainly manifested in increasing the tillering of wheat seedlings, increasing the number of wheat seedlings in the field, and promoting the transformation of weak seedlings. In terms of production, regenerated wheat fertilizer is mainly used in weak seedlings and underpopulated farmland. When there is too much wheat population in the field, the application of regenerated dry fertilizer should be strictly controlled to prevent the population from expanding.

In the early stage of the rejuvenation of small and early macrowheat, if there are more than 300,000 tillers per mu, if the leaf color of the wheat is normal, the regreening fertilizer is generally not applied; If the wheat leaves are yellow, fertilizer can be applied, but the amount of fertilizer should be strictly controlled.

In the early stage of regreening, it is necessary to decide whether to apply regreening fertilizer according to the sowing time and seedling conditions. Fields with early sowing and few seedling stages or poor growth at seedling stage should be fertilized appropriately to promote population increase. The late sowing temperature is low, on the one hand, the fertilizer release is slow, on the other hand, the wheat seedlings germinate late, the root system is born late, and the basal fertilizer in the soil is less absorbed, and these fertilizers are not absorbed slowly in large quantities until the temperature rises in spring.

These fields should not be used unless there are signs of yellowing of wheat seedlings.

You can judge it from the growth of wheat. The slower growth of wheat should be fertilized a little more, and the faster growing wheat should be adjusted the frequency of the equipment, and fertilization must be carried out through different situations, so that the slip guess can help the wheat to grow longer and prevent some diseases.

Generally speaking, it will appear in the middle of February, when the period of Wang Wu is fixed, but sometimes there will be some time errors in auspicious signs. It is necessary to top dressing in time, use base fertilizer, and sometimes supplement organic fertilizer in time. Top dressing can be carried out in combination with watering.

The overwintering leaves of wheat seedlings recovered and gradually turned green. If the color of the wheat is normal, there is no need to eat anti-cleaning fertilizer, and if the leaves of the wheat are yellow, the amount of fertilizer should be strictly controlled, and the field should be fertilized in time.

Yes, wheat topdressing, according to the law of wheat growth and development, is usually applied before the beginning of spring, which is the most appropriate.

The maximum time for winter wheat to return to green fertilizer is only 44 days, and during this time, it is a good time to apply fertilizer. Therefore, wheat topdressing is within the eleventh day of the first month of the year before the year, which is the right time and the best time to apply green fertilizer.

It is recommended that wheat regreening fertilizer should not be applied after the beginning of spring to prevent the postponement of the wheat harvest period.

Wheat regreening fertilizer belongs to the vegetative growth stage of wheat, and it needs sufficient nitrogen fertilizer. Fertilization is generally based on chemical fertilizers, such as urea, ammonium bicarbonate, ammonium chloride, ammonium sulfate, ammonium nitrate and other nitrogen fertilizers.

Reasons why wheat regreening fertilizer cannot be applied after the beginning of spring:

Because of the topdressing of winter wheat regreening fertilizer, high nitrogen fast-acting fertilizer urea is commonly used as top dressing. Before and after the beginning of spring, the temperature in the north of the Huai River in the Qinling Mountains is below 5, and the temperature in the south is below 10, and it takes about 10-20 days for urea to be applied to the soil, which can be converted into nitrogen nitrogen and can be absorbed and utilized by wheat.

After the beginning of spring, the temperature gradually rises, the growth and development of the green jointing starts early, and the nitrogen fertilizer nutrition that is applied to the soil is still not obtained, when the wheat is in the rainwater festival after the jointing period, the absorption of late nutrients will urge the wheat to produce vigorous growth after jointing, so that the wheat growth is difficult to control, resulting in the later lodging, promoting the slow aging and maturity of wheat, and will delay the wheat harvest period.

It affects the fullness of wheat grains, and affects the yield and quality of wheat. Sowu Yan is thinking that the wheat back to green fertilizer must be applied before the beginning of spring, which is the best time for fertilization.