Silage corn fertilization method, how to top dressing corn

The silage corn is 53, the amount of fertilizer per mu is 50kg-60kg, and the nitrogen and phosphorus ratio is between. The amount of fertilizer should be increased according to the target yield in high-yield fields and seed fields. (1) Deep application of basal fertilizer (2) good use of seed fertilizer (3) topdressing in stages.

Fertilization skills Seedling fertilizer booting fertilizer Flower grain fertilizer Foliar spray fertilizer Master these fertilization techniques, silage corn yield is unlikely to be low.

At the 10-leaf stage, when reaching the big flare, nitrogen and potassium fertilizer (n:k=25:5, total content 30%) 40 kg per mu is generally applied.

The period, frequency and quantity of top dressing should be comprehensively considered according to factors such as the growth of corn, the period of fertilization, and the growth period. Phosphorus and potassium fertilizer have a long fertilizer effect, and the early demand of corn is large, so it is applied as basal fertilizer or seedling fertilizer at one time.

In addition to basal fertilizer (4000 kg of organic fertilizer is applied at one time before sowing, and furrowed application); There are also two top dressings, one when the corn is knee-high, and one when the flowers are spouted. Use urea or diamine 20 to 30 catties per mu each time (all city catties).

Two top dressing, the first time for 4 5 leaves to chase a small amount of urea, the second time 8 9 leaves (before getting up jointing) to chase a large amount of urea, root fertilizer isolation to reach more than 10 cm coverage, the dosage with reference to the local perennial situation combined with their own soil fertility set, good land can be used more, poor land use less.

Give more urea and potassium fertilizer for plant growth, and more potassium fertilizer and urea when setting sticks.

It can be used. After the "big flare" of corn appears, the female spikelets and florets of corn begin to differentiate, and the timely re-application of bud fertilizer can promote the normal development of the ear and increase the grain, and the bud fertilizer is generally applied in a timely manner 14 days before heading. If the base fertilizer is insufficient and the growth of corn is weak, it is necessary to increase the amount of fertilizer, and the rotting farmhouse fertilizer and microbial agent can be applied per mu, and at the same time, it is necessary to make up for water with appropriate watering according to soil moisture.

Proper fertilization at the flowering stage can prolong the grain filling period of corn, promote grain filling, improve seed setting rate, and increase yield. If in the early management, the fertilization is insufficient and the soil nutrients are insufficient, it is best to apply an appropriate amount of tapping fertilizer. It can be used per mu with water-soluble fertilizer and high phosphorus fertilizer, mixed with an appropriate amount of fine soil, and applied near the roots of the plant, but do not directly contact with the root system.

If the soil moisture is insufficient, it can be used to irrigate the roots of the plants with fertilizer and water.

Summary. Nitrogen uptake by spring maize, accounting for total nitrogen at seedling stage; Jointing and booting stage; Heading and flowering stage and grain formation stage are accounted for. Due to the short growth period, summer maize absorbs nitrogen earlier and has a faster absorption rate. Jointing and booting stage; Heading to maturity occupies.

The absorption of phosphorus in spring maize accounted for the total at the seedling stage, the jointing and booting stage, and the heading fertilization and grain formation stage. The absorption of phosphorus in summer maize was also earlier, and the absorption at seedling stage, jointing and booting stage, heading and fertilization stage, and grain formation stage were absorbed. The potassium absorption of spring corn and summer corn was similar.

More than 70% is absorbed before heading and 30% is absorbed during heading fertilization.

The nitrogen uptake of spring maize accounted for the total nitrogen growth at seedling stage. Jointing and booting stage; Heading dust accounts for the flowering period and grain formation stage. Due to the short growth period, summer maize absorbs nitrogen earlier and has a faster absorption rate. Jointing and booting stage; Heading to maturity occupies. The absorption of phosphorus in spring maize accounted for the total at the seedling stage, the jointing and booting stage, and the heading fertilization and grain formation stage.

The absorption of phosphorus in summer maize was also earlier, and the absorption at seedling stage, jointing and booting stage, heading and fertilization stage, and grain formation stage were absorbed. The potassium absorption of spring corn and summer corn was similar. More than 70% is absorbed before heading, and 30% is absorbed during heading and fertilization.

1.Base fertilizer Apply 200 300kg of high-quality organic fertilizer per 667 square meters, and advocate straw returning to the field to fertilize the soil. Nitrogen fertilizer generally accounts for 60% of the total fertilizer amount during the whole growth period, and phosphorus and potassium fertilizers are all applied at one time.

Generally, 50kg of special fertilizer is applied per 667 square meters, and 15kg of urea, 15kg of diammonium phosphate, and 15 20kg of potassium chloride are also applied. Envy limb base fertilizer is generally sprinkled before sowing, and then turned deep into the cultivated layer in the hands of the root system set cherry tree, when the amount of fertilizer is small, it should be concentrated on the ridge and ditch application.

It's green storage corn, yes, it's green storage corn.

You are the fertilizer of the seeded corn.

Green storage maize mainly focuses on biological yield, mainly nitrogen fertilizer. to ensure that its stems and leaves are robust and increase yield. Apply fertilizer three times, the first time in the seedling 3-4 leaf stage, let the mountain sell only early 10-12 kg of urea, when the soil is moist, applied in the middle of the two rows; The second time was in mid to late May, 60-70 kg of ammonium carbonate per mu was deeply applied, and the third time was 20-25 kg of urea in mid-June, which was applied in the middle of two rows of corn.

Pay attention to timely irrigation after fertilization to increase fertilizer efficiency.

In order to improve the target yield of silage corn, it is necessary to choose the fertilizer to be applied, apply a certain amount of potassium superphosphate, apply a certain amount of potassium fertilizer, apply a certain amount of multi-element micro-fertilizer, and carry out deep ploughing after fertilization, the depth of envy is 30 cm is more suitable, and there is no need for irrigation after deep ploughing, the purpose is to better judge the grinding and sowing next year.

There are many methods of silage corn stalks, and only the most basic general silage method is introduced here, which is convenient for the popularization and promotion of the vast number of rural areas.

1. Dig the cellar and choose a place with solid soil, high and dry terrain, leeward to the sun, and rain is not easy to wash away to build a silage cellar. The cellar shape is generally divided into round and rectangular, and the cellar wall is straight and smooth, impermeable to water and breathable. The width of the cellar should generally be less than the depth, and the better ratio is 1:

1 5-2, which is conducive to the weight of the raw material itself to compact it and reduce the amount of loss. The size of the cellar should be determined according to the number of silage and the number of heads of livestock, the diameter of the circle is generally between 1 7-3 meters, the depth is 3-4 meters, and the bottom should be in the shape of the bottom of the pot. Large-scale livestock farms should use rectangular cellars, with a width of 1 7-3 meters and a depth of 2 3-3 3 meters, and the length depends on the number of silage.

The corners of the rectangular cellar should be rounded to facilitate the descent and compaction of the raw materials. To reduce silage loss, a plastic film should be laid on the bottom and around the cellar.

2. The calculation of silage cellar capacity should be based on the moisture content of raw materials and the degree of chopping, and the weight of silage per unit volume (cubic meter) should be grasped first (for example, the weight of corn stover in the case of low water content, the weight of finely chopped per cubic meter is 430-500 kg; The coarser cut is 380-450 kg), and then multiplied by the volume of the cellar (the circular cellar is 3 14x radius 2x cellar depth; The rectangular cellar is the length of the cellar x the width of the cellar x the depth of the cellar, both in meters), that is, the weight of the silage in the cellar (kg).

3. To make silage raw materials, it is best to cut them on the same day and store them on the same day. Before loading the cellar, check whether the bottom and wall of the cellar are paved with "pads", whether the edge of the cellar is paved with reed mats (to prevent raw materials from being polluted and soil from entering the cellar), and then start the grass (the length of the chopping should not exceed 3 3 cm), and load it while crushing, and try to avoid the shredded raw materials being exposed to the sun outside the cellar for too long. The ingredients in the cellar should be spread out at any time.

If the raw material is too dry, sprinkle some water evenly. Every 30 cm or so needs to be compacted. Special attention should be paid to pressing around the cellar, and it is better to use a stone pestle to tamp it or rely on a tractor to suppress it.

When the cellar is filled layer by layer, it is dome-shaped at a height of 0 5-1 meters above the ground. When sealing the cellar, first cover a layer with plastic film, add a layer of soft hay, then add soil to tamp, and pat the surface smooth. After sealing, a drainage ditch should be dug 1 meter away from the mouth of the cellar, and the top of the cellar should be checked frequently for subsidence.

If a subsidence is found, it should be repaired again to prevent air and rainwater from entering.

Corn silage production process method.

1. Quality. Be sure to choose high-quality fresh corn stalks, the greener the leaves, the higher the nutritional value, not to choose dry, mildew and rust corn stalks, fresh corn stalks should be processed in time after harvesting, not stored for a long time to avoid heat production and corruption.

2. Moisture. The moisture content of corn straw for processing silage is 60% 67% is appropriate, and when the moisture content is too high, it should be properly dried or added to the appropriate amount of hay to neutralize the water, as long as the moisture is not less than 50%, there is no need to deliberately add water, only need to crush and compact.

3. Crushing. The fresh corn stalks are crushed into small pieces of about centimeters, so that the pressing is more compact to prevent air from entering, second, it is more conducive to fermentation, and third, it is convenient for cattle to eat when used.

4. Compaction. Generally, if it is 30 or 50 cm, it should be pressed once with a tractor, so that the air inside can be discharged as tightly as possible, and the capacity of the silage tank can be increased.

5. Sealing. After the filling is completed, the plastic cloth is used to cover, and the plastic sheet is covered with soil on top and around it to prevent air from entering, so that after 20 to 30 days of sealed fermentation, it can be fed to cattle, and each time it is used, it should be quickly taken and sealed again, so that it can be stored for more than a year without deterioration.

1. Apply sufficient basal fertilizer: Before planting corn, apply basal fertilizer mainly to the field with farmhouse fertilizer as the main fertilizer and compound fertilizer as the supplement. 2. Supplement Qi Miao Fertilizer:

After the seedlings grow, urea is applied as seedling fertilizer. 3. Apply seedling fertilizer: After growing to 40 cm, apply urea-based fertilizer supplemented by compound fertilizer.

4. Frequent application of fruit-promoting fertilizer: spray potassium dihydrogen phosphate to the foliar surface after earing.

1. Apply sufficient base fertilizer

Corn is suitable for growing in a nutrient-rich environment, in the process of breeding, you can apply to the field when planting to the rotten farmhouse fertilizer-based, compound fertilizer as a supplement, the amount of fertilizer of farmhouse fertilizer is 3,000 catties per mu, and the amount of compound fertilizer is 50 kilograms per mu.

2. Supplement Qi Miao Fertilizer:

Corn will germinate after 10 days of sowing, in order to make the seedlings grow more evenly, you can sprinkle 100 catties of urea per mu to promote the growth of plants, and for the growth of thin seedlings, more fertilizer, and the growth of robust seedlings, you should apply less fertilizer to avoid overgrowth, resulting in growth.

3. Apply seedling fertilizer

The stalk of corn grows too slender, after encountering heavy storms and rainy weather, it is easy to break and lodging, which affects the yield, so after the corn grows to a height of 40 cm, it is necessary to apply a seedling fertilizer for it, mainly with urea, supplemented by compound fertilizer, to promote the plant to grow and mature as soon as possible, and grow flower spikes.

4. Frequent application of fruit promotion fees

In the process of fertilization, potassium dihydrogen phosphate can be sprayed on corn leaves to promote the differentiation of plant flower buds, and phosphorus fertilizer and boron fertilizer should also be sprayed to improve the quality of fruits.

Nowadays, corn topdressing is basically sown, and it is carried out when the rain is coming or after the rain. The safest and most effective way is to burrow, dig a hole between the corn plants, fill it with fertilizer, and cover it with soil, but pay attention not too close to the root system to avoid burning the roots. This method requires time and labor, and small areas can be cultivated.

Crops and flowers depend on fertilizer", it can be seen that the role of fertilizer in the growth process of crops is very large. And corn, as a crop that likes big fertilizer, top dressing is one of its important links!

In the growth process of corn, there are generally three periods, and the macro type is the time when the nutrients are most imitated: jointing stage, large flare stage and male spinning stage.

Because of the rapid growth during this period, the panicle differentiation is carried out, and the consumption of nutrients is the most, we must top fertilize in time to supply the nutrients needed for the growth of corn.

The best time for top dressing is the big bell period of corn, and our local area is generally a "bombardment" type top dressing, that is, top dressing is carried out in the big bell period of corn, and only this time is topdressing, and the follow-up will not be top dressing.

Corn top dressing, generally based on nitrogen fertilizer, our most commonly used is urea, supplemented by phosphate fertilizer, potassium fertilizer or farm fertilizer, to supplement the nutrients needed for the rapid growth of corn, promote corn growth full grains, high yield and stable yield!

usGenerally, about 20 kg of urea is topdressed per muIf the soil is not fertile and the seedlings are weak, you can apply more fertilizer as appropriate to ensure the nutrients required for the development of corn!

Corn topdressing, which is now basically spreading, is carried out when the rain is about to come or after the rain

Although this saves labor time and labor, there is also a drawback, sometimes the fertilizer is sprinkled, but the rain does not necessarily fall, and the fertilizer effect is easy to volatilize, affecting the effect of top dressing.

Sometimes the rain is too heavy, and the fertilizer will be washed out of the field with the rainwater, and the effect of top dressing cannot be achieved.

The safest and most effective method is to burrow, dig a pit between the corn plants, fill it with fertilizer, and cover it with soil, but pay attention not too close to the root system to avoid burning the roots.

This method requires time and labor, and it is okay to plant a small area, but mechanization should be considered if there is a lot of land.

After top dressing, the effect will be better if it rains. If the fields are dry and there is no rain in recent days, it is necessary to carry out manual watering. The moist surface is conducive to the absorption of fertilizer, which can promote the development of corn, and the ears are large and full, laying a good foundation for a bumper harvest!

In short, corn topdressing is an important part of the corn production process, and we have done a good job in several aspects that need to be paid attention to in order to promote the growth and development of corn, make the grain full, increase the grain weight, and achieve the purpose of high quality and high yield.