Do you need top dressing for wheat farming? Can wheat be topdressed now

This question has always been controversial! It can be said that the benevolent see the wise and the wise see the wise, and some areas are the "lazy man mode", and it doesn't matter if the base fertilizer is applied once in the later stage. Zuimei Xueyan believes that planting crops is the same as raising a baby, and it has to be the safest step by step, not only to apply foot fertilizer, but also to reasonable top dressing during the rejuvenation period and heading stage.

1. Under what circumstances does wheat planting not need top dressing?

Wheat varieties are excellent, with strong fertilizer tolerance, disease and insect resistance.

Wheat sowing soil fertility, high organic matter, excellent moisture, we can use a single application of foot fertilizer.

The location of the field is good, the rain is abundant, and the temperature and climate are suitable for wheat growth.

As long as the above three elements are met, I think there is nothing wrong with planting in the lazy mode, but it is still necessary to pay attention to the fact that the base fertilizer must be sufficient, and organic fertilizer and chemical fertilizer can be used in combination, so as to ensure that the wheat grows vigorously in a balanced nutrition throughout the growth cycle.

How to apply base fertilizer to wheat?

Bottom fertilizer is the top priority of wheat fertilizer throughout the cycle, should be fully decomposed farmhouse fertilizer, with the appropriate amount of compound fertilizer is the best, generally one acre with about 50 catties. If there is no condition to use farmhouse fertilizer, then you can only increase the amount of compound fertilizer, generally using about 100 kg of high nitrogen, phosphorus and potassium compound fertilizer as the base fertilizer.

Many friends think that urea can also be used as a base fertilizer, and wheat nitrogen fertilizer should be sufficient. What I want to say here is that although nitrogen fertilizer has a very high status in the whole growth process of wheat, too much nitrogen fertilizer in the early stage will lead to the growth of seedlings, greedy seedlings and lodging, so I personally think that urea should not be used for base fertilizer.

In fact, wheat will not absorb too much nutrients at the jointing and heading stage, and more is the redistribution of nutrients in the wheat plant. Therefore, if there is a lack of fertilizer in the early stage of wheat, it should be in the jointing period at the latest, so as to keep up with the final rhythm and strive for the final nutrients for the wheat to bloom and the fruit to fill.

Yes, when the wheat sprouts, the appropriate amount of top dressing can make the wheat grow better and increase the harvest yield.

Summary. In two months, wheat has undergone earth-shaking changes, and by topdressing wheat, three effects can be achieved: balanced nutrition.

Wheat has different nutrient requirements at different growth stages, and wheat has a large demand for nitrogen before winter, resulting in a decrease in the proportion of nitrogen in the soil. By applying fertilizer in spring, the nitrogen in the soil can be replenished, and the nitrogen fertilizer demand of wheat can be guaranteed at the jointing and heading stage. Help the weak and promote the strong.

Before winter, field management, water and fertilizer management, disease management are not in place or suffer from frost damage, resulting in sluggish growth of wheat, and the problem of weak seedlings and yellow seedlings is prominent. By applying fertilizer in spring, the growth of weak seedlings can be improved, so that weak seedlings become normal seedlings, and normal seedlings grow vigorously. Increase the number of spikes.

The growth rate of wheat in spring is fast, the nutrients required are large, and the nutrients are not timely, and the tillering, the number of ears and the number of grains of wheat will decline. Through spring topdressing, wheat tillering can be promoted, and the number of spikes and grains per spike per unit area can be increased.

Can wheat be topdressed now

I'll send you the answer right away.

Wheat can now be topdressed by pro-kisses.

Spring is the critical period for wheat growth, and top dressing can be used for regreening, rising and jointing. From mid to late February to early March, wheat turns from yellow to green for new clothes, which is regarded as returning to green; From mid-March to early April, the wheat is seen as rising from prostrate to erect; From early April to mid-April, wheat jointing is upward, which is regarded as jointing.

In two months, wheat has undergone earth-shaking changes, and by topdressing wheat, three effects can be achieved: balanced nutrition. Wheat has different nutrient requirements at different growth stages, and wheat has a large demand for nitrogen before winter, resulting in a decrease in the proportion of nitrogen in the soil.

By applying fertilizer in spring, the nitrogen in the soil can be replenished, and the nitrogen fertilizer demand of wheat can be guaranteed at the jointing and heading stage. Help the weak and promote the strong. Before winter, field management, water and fertilizer management, disease management are not in place or suffer from frost damage, resulting in sluggish growth of wheat, and the problem of weak seedlings and yellow seedlings is prominent.

By applying fertilizer in spring, the growth of weak seedlings can be improved, so that weak seedlings become normal seedlings, and normal seedlings grow vigorously. Increase the number of spikes. The growth rate of wheat in spring is fast, the nutrients required are large, and the nutrients are not timely, and the tillering, the number of ears and the number of grains of wheat will decline.

Through spring topdressing, wheat tillering can be promoted, and the number of spikes and grains per spike per unit area can be increased.

First, top dressing and protection of sin Late sowing wheat seedlings in the three-leaf dew, to promote the formation of early sins, strive for 4 leaves not vacant, to protect the survival of tillers. Therefore, it is necessary to apply seedling and tillering fertilizer in advance, apply 5 kg of urea per mu of wheat field after seedlings are ready, and spray 800 times of new high-fat film in a timely manner to improve the utilization rate of active ingredients in fertilizer.

2. Anti-freezing and seedling protection Late-sown wheat has few overwintering leaves, and the secondary roots form an independent system, which is susceptible to frost damage. Apply wax fertilizer early. Before December 31, combined with weeding and loosening soil roots, apply about 50 quintals of soil and miscellaneous fertilizer per mu of wheat field to protect the tillering joints.

Third, the central control of the prevention of late sowing wheat in spring is fast, and the leaf emergence speed is faster in the case of sufficient fertilizer and water. From the rejuvenation stage to the basal internode elongation period, lightly press 1 time with a wooden stool to control the tillering after spring, promote the tillers into ears, and the jointing fertilizer should be timely and appropriate, and a certain amount of phosphorus and potassium fertilizer should be applied, and the amount of urea applied per mu of wheat field should not exceed kilograms.

Fourth, spraying phosphorus and strengthening grains Foliar spraying of phosphorus fertilizer can improve the seed setting rate of late-sown wheat, and spray strong panicle spirit at the booting stage of wheat to strengthen the physiological function of crops, improve the quality of pollination, fertilization and grain filling, and increase the weight of 1000 grains. At the same time, before and after heading, 2 3 times of potassium dihydrogen phosphate solution plus 800 times of new high-lipid film were sprayed continuously, with an interval of about 5 days each time, which also had a good effect on improving yield.

1. Due to the long-term flooding of paddy fields, the soil is compacted and the permeability is poor, so it is necessary to promote soil maturation through water-dry rotation and alternating dry and wet. The characteristics of land preparation are that when the previous crop is harvested earlier, it should be ploughed as soon as possible during the suitable cultivation period, so as to take advantage of the high temperature and sunny weather in early autumn, and then carry out shallow tillage and fine raking before sowing in the kang soil, so as to achieve deep and soft and fine, and the top is virtual and the bottom is solid; In the past, as a late rice or hybrid rice farming, due to the short spacing between harvesting and sowing, the ditch should be opened and drained when the rice seeds are scattered, and strive to dry the thin slices and short-term kang fields; On the premise of not delaying the timely sowing of wheat, it can also be shallow rotation to create a good seedbed and growth base for wheat.

2. The land preparation of dryland wheat should be based on the basis of increasing the deep tillage layer year by year, combined with the application of organic fertilizer, and improving the retention and storage of water and fertilizer, and the land preparation should be carried out according to different forms of multiple cropping. That is, the previous harvest is earlier, such as spring corn, sorghum, tobacco, etc., the harvest should first be shallow tillage to eliminate stubble, and then deep ploughing of the kang soil, so that the residue rots and accepts the autumn rain, shallow rake after the rain, reduce evaporation; The other category, such as sweet potato, cotton, etc., has a tight harvest time, and if the conventional method is used, it is bound to delay the sowing date, which is one of the important reasons for the low yield of wheat in southwest China. Therefore, on the one hand, the implementation of loosening soil and moisture between the rows in the previous crop and later period, and then plowing and leveling when planting wheat; On the other hand, it advocates continuous operations such as digging potatoes, leveling the ground, fertilizing, and sowing to ensure that wheat is sown in a timely manner.

High-yield technology: 1. Pay attention to the selection of high-fertilizer and water plots. High-yield and high-quality wheat varieties require that soil nutrients must be comprehensive and sufficient to meet the needs of high-yield cultivation, so it is advisable to choose plots with high soil fertility and good watering conditions, increase organic fertilizer, and adopt formula fertilization technology.

Second, pay attention to the appropriate period of late sowing, according to the characteristics of the variety, to determine the appropriate basic seedlings. It is necessary to prevent excessive sowing volume, resulting in passive post-management.

3. Pay attention to prevent lodging and reapply the high-quality wheat varieties promoted by getting up and jointing, some are not resistant to lodging, especially for wheat fields with too large groups, a chemical control treatment must be carried out before returning to jointing, and paclobutrazol or wheat Yefeng can be sprayed. It is necessary to reapply jointing fertilizer to control the formation of excess falling ears and promote large ears and more grains.

Fourth, pay attention to watering grouting water, wheat water, spraying foliar fertilizer, to prevent premature aging. Watering the grouting water plays an important role in increasing the weight of the grain and preventing dry and hot air. In dry weather, the use of wheat water is conducive to intercropping and preventing premature aging.

In the first half of May, combined with the prevention and control of pests and diseases, spray 2 or 3 times of foliar fertilizer, such as potassium dihydrogen phosphate, which can reduce the harm of dry and hot air and increase yield.

Fifth, pay attention to the prevention and control of pests and diseases. Generally speaking, high-quality wheat is more susceptible to pests and diseases, such as wheat sheath blight and powdery mildew, and aphids occur earlier and heavier than conventional varieties. It should be prevented and treated as soon as possible according to the forecast.

6. Spray wheat treasure once when the wheat [just breaks, before heading and flowering] reaches about 60-70% (as shown in the figure below), activates the activity of biological enzymes in wheat, promotes the development and coordination of female and male organs, enhances the photosynthesis of functional leaves, significantly reduces the empty stubble rate, improves the seed setting rate and 1000-grain weight, so as to achieve the effect of increasing yield.

The n in this fertilizer is enough, there is no need to mix urea, to the spring of next year, if the seedlings are weak when watering, apply some urea, 10kg per mu.

1. Draw and hoe during the regreening period of winter wheat and the rising period. Winter wheat is not watered in the green stage and rising period, and hoeing is carried out as soon as possible.

Second, top dressing and watering of winter wheat at the jointing stage. Fertilization and watering in the rejuvenation period or rising stage in general production is changed to topdressing and watering from the jointing stage to the late jointing stage. The specific time of applying joint-cutting fertilizer and watering and water-saving should be determined according to the variety, soil fertility level, moisture and wheat seedling conditions.

1. Large spike varieties with low tillering rate are generally topdressed and watered at the beginning of jointing (centimeters above the ground between the first nodes at the base). 2. Medium-spike varieties with high tillering rate should be topdressed and watered in the early to middle stage of jointing under the condition of high soil fertility level. 3. For wheat fields with high soil fertility level and large groups, it is advisable to top dressing and watering in the middle to late jointing stage (when the first node at the base is close to the fixed length, and the flag leaves are exposed), and generally about 15 kg of urea per mu.

3. Water flag water or flowering water. The flag picking period is the critical period when wheat needs water, and irrigation at this time is conducive to increasing the number of grains per panicle and ensuring that the soil is deeply stored for absorption and utilization in the later stage. If the moisture of wheat is good at the flag stage, it can also be postponed to the flowering stage.

Wheat fertilization.

For every 100 kilograms of wheat grains produced, about four kilograms of pure nitrogen, about kilograms of phosphorus, and about kilograms of potassium.

Wheat is most afraid of the fetus, the application of foot fertilizer is very important, so in the cultivated land need to increase the application of organic fertilizer, soil miscellaneous fertilizer at the same time need to sprinkle 35 compound fertilizer or wheat special fertilizer 50 kilograms.

In the regreening stage, 8-10 kg of urea can be applied according to the growth of wheat, and the plots where there is no shortage of fertilizer can be applied without topdressing.

At the jointing stage and booting stage, 15 to 20 kg of urea per mu were applied.

In the later stage of wheat, potassium dihydrogen phosphate, amino acids, humic acids, and alginic acid foliar fertilizers can be sprayed, which can effectively improve the stress resistance of plants and achieve the purpose of increasing yield.