When wheat turns green, what foliar fertilizer to spray and how much is it better to spray?

First of all, thank you Goku for the invitation!

When the wheat returns to green, it has high requirements for fertilizer and water in the field, because it plays the role of wheat tillering into ears and consolidating the tillering before winter. Foliar fertilizer spraying is only one way to fertilize wheat (in essence, it is not necessary to apply foliar fertilizer). Not all wheat fields need to be topdressed and watered for regreening, and they should be fertilized according to the seedling growth of the field, soil fertility, and seedlings.

For some late-sown wheat, there are many weak seedlings before winter, the wheat population is poor, and the fertility is insufficient. Retrograde manure should be applied early and reapplied.

The purpose of fertilization is to promote the weak to become strong, induce early spring tillering, and scientifically balance nutrition. If fertilization is required, diammonium phosphate or about 10 kg of urea can be applied per mu.

Furrow application and foliar spray can be used.

Furrow application and foliar spray can be used.

For some wheat fields with sufficient fertility, high sowing density, and fertilization before winter, wheat fields with vigorous growth before winter. Top dressing is generally not required in the rejuvenation period, so as not to increase ineffective tillering after spring. In this kind of wheat field, attention should be paid to wheat application.

Get up and get jointed.

In order to increase the number of tillering ears and the number of grains per panicle.

Get up and get jointed.

Wheat spraying. Foliar fertilizer.

It can also play a role in the purpose of robust wheat seedlings, enhance stress resistance, and improve the panicle rate. However, spraying foliar fertilizer also needs to depend on the seedlings.

Foliar fertilizer. <>

For early sowing, partial application of nitrogen fertilizer, high sowing density, before winter.

Grows vigorously. of wheat fields. It should be sprayed early when it is rejuvenated.

Aqueous solution of potassium dihydrogen phosphate.

The concentration should not be too large, it can be around the right, and the dosage per mu is about 50 kg. It can promote the stalk of wheat seedlings to be strong, stout, and enhance stress resistance, and prevent the occurrence of lodging in the later stage.

Grows vigorously. Aqueous solution of potassium dihydrogen phosphate.

Such as wheat sprouts appearing.

Weak seedlings. Wheat fields with insufficient soil fertility and lack of nutrients such as nitrogen. Urea and other aqueous solutions should be sprayed when rejuvenating, and it is recommended to use it in a balanced manner.

Such as urea, superphosphate, potassium sulfate mixed spraying effect is better. The concentration should not be too high, between 1-2%, about 50 kg per mu, or depending on the situation.

Weak seedlings. <>

At present, we are in the regreening period of wheat, and many people are consulting what to do in the regreening period of wheat in order to make wheat yield high, some growers pay attention to the use of fertilizers, and some growers pay attention to the use of pesticides.

First of all, it is necessary to figure out when the wheat rejuvenation period is, the wheat rejuvenation period generally refers to the average temperature above zero, the wheat begins to slowly resume growth, and the heart leaves of wheat also begin to grow, this period is called the rejuvenation period.

The wheat in the rejuvenation stage begins to root and tiller, this time is also the peak tillering period of wheat, which plays a vital role in the yield of wheat, and the management of this period determines the number of ears per mu of wheat, so the management in this period is very important.

In the regreening period of wheat, it is generally necessary to do top dressing, watering and foliar spraying of foliar fertilizer, and watering should be watered with small water, not flood irrigation. The use of foliar fertilizer during this period is also very important, you can use 50 grams of potassium dihydrogen phosphate mixed with 40 kg of water for spraying, if the conditions are sufficient, it is best to be able to increase pyraclostrobin and difenoconazole a spray, which can not only promote tillering well, but also play a good role in disease prevention.

It is best to grasp the foliar fertilizer of wheat in spring at 20 to 25, which is the late jointing stage of wheat tillering, and the fertilizer needs to be increased.

It is recommended to use foliar fertilizer spray with regulator to promote nutrient absorption and save labor. For example, potassium dihydrogen phosphate and brassinin are used to alleviate frost damage. 80 100 grams of potassium dihydrogen phosphate, 10 ml of brassin, and 30 kg of water can be used per mu.

Wheat spraying foliar fertilizer, but also depends on the temperature situation, it is best to use more than 10, spraying too early, low absorption and utilization rate.

The spraying temperature of wheat foliar fertilizer is generally about 25 degrees, and under the condition of this temperature, the black material is absorbed relatively quickly and the effect is better.

There are no special requirements for temperature. Potassium dihydrogen phosphate is a commonly used phosphorus and potassium fertilizer for farmers, which can be used in all growth periods of wheat and has a good effect on increasing yield. Spraying in the regreening stage is conducive to promoting wheat regreening, phosphorus can promote multi-tillering, potassium can improve the resistance of wheat seedlings, and reduce the occurrence of frost damage and pests and diseases.

After spraying potassium dihydrogen phosphate, the growth of weak seedlings can be improved. For the low temperature period in early spring, the growth of wheat seedlings is slow, and the leaf sheath at the base of the stem is purple-red, and the spraying of potassium dihydrogen phosphate can alleviate the symptoms of phosphorus deficiency and promote the growth of wheat seedlings.

Urea is the main method of topdressing in the regreening stage of wheat.

Under normal circumstances, the normal growth of wheat fields, topdressing in the green stage is mainly urea, urea is a fast-acting nitrogen fertilizer, and nitrogen can promote the growth of wheat well, as for the amount per mu, 15-20 kg per mu can be.

Of course, there are exceptions, if wheat sowing, no base fertilizer is applied, then in the regreening period, to apply nitrogen, phosphorus and potassium three elements of compound fertilizer, wheat growth process, not only need nitrogen fertilizer, phosphate fertilizer and potassium fertilizer are also very important, it is recommended to apply high nitrogen ternary compound fertilizer, 40-50 pounds per mu to take the amount of loss.

In addition, there are some farmers, when wheat is sown, the bottom fertilizer only uses diammonium, diammonium mainly contains nitrogen fertilizer and phosphate fertilizer, no potassium fertilizer, therefore, for such a plot, when topdressing in the green stage, urea can not be used alone, and potassium chloride needs to be supplemented. 15-20 kg of urea per mu can be used, plus 10-15 kg of potassium chloride.

In addition, it is necessary to pay attention to the time of top dressing:

When the wheat is regreening, the top dressing should not be too early or too late. If the top dressing is too early and the temperature is relatively low, on the one hand, the wheat has not yet begun to return to normal growth, and the demand for nutrients is limited, resulting in unnecessary waste.

On the other hand, wheat topdressing is mainly urea, if the topdressing is too early, the temperature is low, after urea topdressing, can not be directly absorbed by wheat, Min Li needs to go through a series of reactions, converted into ammonium nitrogen before it can be absorbed, and the lower the temperature, the longer the transformation time, the more volatilized, and the less nutrients can be absorbed by wheat.

If the topdressing is too late, for the wheat that urgently needs nutrients in the regreening stage, the best fertilizer absorption period has been missed, especially in the wheat field where frost damage occurs, the topdressing is too late, which will aggravate the degree of frost damage, even if the subsequent topdressing, the damage has appeared, and the yield will not be maximized.

The amount of urea per mu of wheat fertilization is as follows:

1. For the first time in the rejuvenation period, 5-8 kg of urea per mu should be applied with watering.

2. For the second time in the jointing period, with watering, urea 5-10 kg per mu, the density is larger and there is a vigorous growth phenomenon of wheat fields, to postpone the topdressing time, but also to reduce the amount of fertilizer, can be in the late jointing stage of the family topdressing urea per mu 8-10 kg.

3. For other wheat fields with normal growth and moderate density, 10-15 kg of urea per mu can be applied in combination with watering during the wheat rising period. If the base fertilizer is not applied with ternary compound fertilizer, 50 kg of 3 15 content of compound Ling Hefei can be applied at the regreening or jointing stage.

Fertilizer for wheat regreening:

1. Urea. Under normal circumstances, wheat can be top-applied urea, each mu must be top-applied late or about 20-30 catties, if nitrogen fertilizer is too much town, you can reduce the amount of application. As a relatively common nitrogen fertilizer, urea can effectively promote the growth of wheat, and the reasonable application of nitrogen fertilizer is also the key to the growth of wheat during the regreening period.

2. High-nitrogen compound fertilizer.

The use of ternary high-nitrogen compound fertilizer for top dressing, each mu can be applied about 30 catties, which can well solve the symptoms of lack of bottom fertilizer in the plot. If the wheat is deficient in the regreening stage, there will be symptoms of red and purple wheat seedlings, so it is necessary to reasonably supplement nitrogen fertilizer, and appropriately add phosphate fertilizer and potassium fertilizer to help the wheat yield in the later stage.

3. Foliar fertilizer.

Foliar fertilizer can be sprayed during the wheat rejuvenation stage to supplement the nutrients needed for wheat growth, but foliar fertilizer sprays are carried out when the wheat is ripe, which can improve the quality of the wheat. In the planting process, you can choose potassium dihydrogen phosphate, a foliar code, to spray to ensure that nutrients are absorbed by wheat leaves, and you can also spray trace element fertilizer to improve the quality of wheat.

4. Urea high potassium, low phosphorus and medium nitrogen compound fertilizer.

In the plot where wheat is planted normally, the cost of fertilizer topdressing will definitely increase, so it is necessary to reasonably control the amount of fertilizer. If the top dressing is excessive, it will lead to the growth of wheat phenomenon, generally top dressing 40 kg of urea high potassium low phosphorus medium nitrogen compound fertilizer is very suitable.

Regreening of wheat:

1. The time of wheat rejuvenation is about the end of February to the end of March, but due to different climatic conditions, the time of wheat rejuvenation will also be different.

2. The main manifestations of wheat entering the rejuvenation stage are: first, the leaves of safe wintering begin to turn from gray-green to bright green, and new leaves will grow; The second is that the aboveground parts are frozen to death and only some plants with green heart leaf tips, as long as the tillering nodes are not frozen to death, new tillers can be regenerated from the tillering nodes.

In the process of wheat regreening, the use of appropriate nitrogen fertilizer can promote the tillering growth of wheat. Especially for relatively short wheat plants, the right amount of nitrogen fertilizer can help them grow quickly and improve their growth potential. In addition to this limb, an appropriate amount of phosphate and potassium fertilizers can be used to improve the stress resistance of wheat and prevent it from being affected by diseases during the rejuvenation period.

In general, the amount of fertilizer applied should be adjusted according to the growth of the wheat and the soil conditions to avoid adverse effects on the growth of the wheat.

Wheat sowing late return to green manure fertilizer, depending on the growth of wheat.

A type of wheat field, .When continuous low temperature may cause frost damage during the rejuvenation period, the concentration of potassium dihydrogen phosphate, amino acids or alginic acid trace element foliar fertilizer can be sprayed.

In the regreening stage of the second type of wheat field, when frost damage may occur in case of continuous low temperature, the concentration of potassium dihydrogen phosphate, amino acids or alginic acid trace element foliar fertilizer and amine fresh ester can be sprayed.

In the regreening stage of the three types of wheat fields, the temperature is low, the root system is weak, and the soil phosphorus activity is low, so urea or urea containing humic acid, 8 to 10 kg of urea containing alginic acid, 6 to 8 kg of ammonium phosphate phosphate or humic acid and ammonium phosphorus alginate are applied to promote root tillering; The concentration of spraying is to potassium dihydrogen phosphate, 2% urea, amino acids or alginic acid trace element foliar fertilizer and amine fresh ester, and promote the transformation and upgrading of seedlings through above-ground and underground linkage, so as to cultivate a healthy group.

Wheat topdressing method

1. Check the growth of wheat. If the wheat grows normally and there are no yellow seedlings, purple seedlings, red seedlings and other phenomena, then urea can be topdressed, about 30 to 40 catties per mu. On the contrary, if the wheat is short and has purple seedlings, red seedlings and other symptoms, it is necessary to apply compound fertilizer, about 40 to 50 catties per acre.

At the same time, spraying some full-effect supplementation or wheat-specific foliar fertilizer is more conducive to the normal growth of wheat.

2. Whether the wheat is applied with base fertilizer. When sowing wheat, the vast majority of farmers will choose to use base fertilizer, however, there are a small number of farmers who do not use base fertilizer, in this case, there is no land with base fertilizer, top dressing to use compound fertilizer, and the amount per mu is 70 to 80 catties, or even about 100 catties. The plots with base fertilizer, combined with the first factor, under normal circumstances, can be top-applied urea, about 30 to 40 catties per mu.

3. Judge according to soil fertility. Some plots themselves are relatively fertile, wheat grows well, and urea can be selected when topdressing, about 30 to 40 catties per mu. Due to the influence of a variety of factors, such as excessive use of chemical fertilizers and pesticides all year round, the soil is relatively poor and even compacted, in order to promote the growth of wheat, it is necessary to choose compound fertilizer when topdressing.

According to the reaction of most farmers, the farmers who choose urea when topdressing account for a relatively large proportion, and the farmers who compound fertilizer are relatively few, after all, farmers will calculate the cost of farming, and the ** of compound fertilizer is still higher than that of urea**.

In the actual planting process, there are some farmers, choose top dressing 2 times, the first time to apply urea during the rejuvenation period, the second time to apply compound fertilizer during the heading period, this practice, everything is normal, two times is definitely better than once, however, some farmers will calculate the cost, one is the cost of fertilizer, the second is the cost of labor, the third is the cost of wheat yield and wheat **. Therefore, many farmers do not like to chase it twice and think that it is not worth it.

The spring wheat rejuvenation stage is an important period for wheat growth, and appropriate topdressing is needed to promote plant growth and increase yield. For fertilizer application during the spring wheat rejuvenation period, the following fertilizers are recommended:

1.Urea: Urea is a fast-acting nitrogen fertilizer that can be applied by foliar sprays or ground topdressing to increase nitrogen levels in the soil. In the spring wheat regreening stage, urea was the most common nitrogen fertilizer.

2.Diammonium phosphate: Diammonium phosphate is a commonly used phosphate fertilizer, which can increase the phosphorus content in the soil and promote the green growth of spring wheat.

3.Potassium fertilizer: Wheat also needs an appropriate amount of potassium during the spring regreening stage, and can promote the flowering and fruiting of plants through the application of potassium fertilizer, and improve the yield and quality.

In addition to the above-mentioned fertilizers, you can also choose some organic fertilizers, such as manure, biogas slurry, etc., for application, these fertilizers can not only increase the fertility of the soil, but also improve the quality of the soil, improve the immunity and adaptability of wheat. It should be noted that the type and amount of fertilizer should be reasonably matched according to the actual situation to avoid waste and environmental pollution caused by excessive fertilization.