What fertilizer is good for growing sunflowers? Can sunflower seeds be used as fertilizer

Phosphorus fertilizer is mainly used in the early stage of sunflower fertilization, and nitrogen fertilizer and potassium fertilizer are mainly used in the middle and late stages.

1 The law of sunflower's fertilizer needs.

Sunflowers are a crop that requires a lot of fertilizer. The formation of the flower disc to the flowering period is the peak fertilizer requirement of sunflowers. More phosphorus is required from seedling emergence to flower disc formation stage, more nitrogen is required from flower disc formation to final flowering, and potassium absorption is the most from flower disc formation to wax maturity stage.

Therefore, phosphorus is the main fertilizer in the early stage of sunflower fertilization, and nitrogen and potassium are the main in the middle and late stages.

Every 100kg of sunflower seeds produced.

Nitrogen (N), phosphorus (P2O5) and potassium (K2O) need to be absorbed from the soil. Phosphorus and potassium fertilizers are mostly applied as base fertilizer or seed fertilizer, while nitrogen fertilizer is used as top dressing.

2 Fertilization techniques for sunflowers.

The principle of fertilization is to apply sufficient basal fertilizer, reapply seed fertilizer, and apply it at the appropriate time.

The base fertilizer is mainly farmhouse fertilizer. It is better to use pig manure with rotted manure. The general field is 1500-2500kg per mu, and the high-yield field should be 3000-4000kg per mu. If phosphate fertilizer is used as base fertilizer, superphosphate is generally applied in the field.

30kg high-yield field application about 50kg. Potassium fertilizer can be applied to 50-75kg of plant ash per mu.

But in saline land.

No plant ash.

Seed fertilizer should use available nitrogen, phosphorus, potassium fertilizer and fine manure and manure of livestock and poultry. The dosage should be small and precise. Generally, 15-30kg of potassium chloride can be applied to superphosphate per mu.

or 10-15kg of potassium sulfate or 35kg of plant ash. Ammonium nitrate should be applied to barren hillsides or gravel soils.

4-7kg or ammonium sulfate.

About 10kg. It can be applied in holes or strips in the sowing furrow.

Top dressing is divided into top dressing at seedling stage and top dressing at flowering stage.

Top dressing at seedling stage: Spring-sown sunflower that is ripe once a year is generally not topdressed when the base fertilizer or seed fertilizer is sufficient. Sunflowers sown in summer and autumn need to be fertilized.

Top dressing during flowering: The critical period for top dressing of sunflowers is before budding. Nitrogen and potassium fertilizers are generally topdressing when 7-8 pairs of leaves, and topdressing without seed fertilizer should be appropriately advanced.

Top dressing is generally applied with 10-15kg ammonium nitrate per mu.

20-25kg urea.

20kg of superphosphate, 15kg of potassium chloride. Strip or acupuncture.

Boron fertilizer has a good effect on increasing the yield of sunflower. Boron fertilizer should be added when the available boron content of the soil is low. It can be 150 grams of borax seed dressing per mu or sprayed with borax aqueous solution before flowering.

In the process of sunflower planting, we should pay attention to medium and trace elements.

the administration of the ; When the sunflower grows to 7 or 8 pairs of true leaves, the flower primordium differentiation is carried out in the body, so when the conditions of the seedling environment are superior, the functional period of the differentiated tubular flowers is long, the number of differentiated florets is large, and the later stage can have more flowers, more grains, and high yield.

in a large number of elements.

On the basis of N, P and K guarantees, combined with the application of medium and trace elements, especially boron and zinc, it plays an extremely important role in the pollination and improvement of seed setting rate of sunflowers.

It is suggested that farmers should pay attention to good trace element foliar fertilizer at the seedling stage when planting conventional sunflowers, and supplement the trace element foliar fertilizer in time after the seedling stage and flowering stage of hybrid sunflower, which will have unexpected harvests.

Sunflowers actually need about n:,,for every 100kg of seeds produced, and sunflowers require more potassium than other crops. Sunflower from budding to flowering, especially from the formation of the flower disc to flowering, is the key period for its nutrient absorption.

1. The consumption of nitrogen fertilizer in sunflower seedlings and buds accounts for about 35% of the total, about 32% during budding and flowering, and about 33% in flowering and maturity.

2. The consumption of phosphate fertilizer in the seedling-budding stage of sunflower accounts for about 21% of the total, the bud-flowering accounts for about 33% of the total, and the flowering-maturity consumption accounts for about 46%.

3. The consumption of potassium fertilizer in the seedling-budding stage accounts for about 40% of the total, the bud-flowering accounts for about 26% of the total, and the flowering-maturity consumption accounts for about 34%.

How to use common chemical fertilizers.

1. Diammonium phosphate is referred to as diammonium. The total active ingredient is 64%, of which: phosphorus (P2O5) 46%, nitrogen (N) 18%, chemical properties are alkaline, belongs to water-soluble phosphate fertilizer.

Diammonium phosphate is used as a base fertilizer, and it is applied to the position of concentrated root growth as much as possible, and if it is mixed with organic fertilizer (farmhouse fertilizer), it can effectively provide the utilization rate of phosphate fertilizer; When using seed fertilizer, pay attention to the fertilizer and seeds must be applied in layers or in parallel (fertilizer and seeds are more than 10 cm apart).

2. Potassium sulfate is a colorless crystal, with low hygroscopicity, not easy to agglomerate, good physical properties, easy to apply, and is a good water-soluble potassium fertilizer. Potassium sulfate is also a chemically neutral, physiologically acidic fertilizer. Potassium sulfate is a chlorine-free, high-quality and high-efficiency potassium fertilizer.

Potassium fertilizer has good mobility in the soil and can be used as top dressing or base fertilizer. Judging from soil fertility, the content of available potassium in sloping cultivated land and sandy land is often low, and potassium fertilizer should be increased. Flat land and watered land should be applied sparingly.

3. The nitrogen content of urea is 46%, and the pure product is white or slightly yellow granular, soluble in water, and is a neutral nitrogen fertilizer. Best for crop soil topdressing. In addition, off-root topdressing, i.e., foliar spraying, is also effective.

Urea is applied to the soil, which can be absorbed and utilized by crops in large quantities only after being converted into ammonium nitrogen with the help of soil microorganisms, which takes about 4-6 days, so urea topdressing should be used a few days in advance, and it is also required to apply deep soil covering.

4. The commonly used variety of boron fertilizer is borax, and its use method is mainly foliar spraying. Use concentration, dosage 50kg, spray 2-3 times. Boron fertilizer should not be used as base fertilizer to prevent excessive harm. The cut-off value for available boron deficiency in soils is less than.

5. At present, the commonly used zinc fertilizer varieties of zinc fertilizer are agricultural zinc sulfate. Its use method is to make the amount of base fertilizer per mu 1-, which cannot be mixed with superphosphate; Foliar spray concentrations are: No matter which way zinc fertilizer is used, it must not be excessive, and only one type of base fertilizer and top dressing can be used, and applied every other year.

The soil available zinc content is low, which can be used as a critical indicator of soil zinc deficiency.

This determines the quality of the flowers, the lifespan of the sunflower, and so on, so how to fertilize the sunflower properly? Today we will take a closer look at the sunflower fertilization time, as well as the fertilizers used at different stages.

How to fertilize sunflowers.

Because the nutrients required by sunflowers at different stages are different, the fertilizers applied at different times are also slightly different, so how to fertilize sunflowers? First of all, you need to know the correct time to apply fertilizer, and secondly, you should also know about the main fertilizers.

1. Sunflower fertilization time.

In the growing period of sunflowers, generally fertilized once every 20 days, if it is before flowering, it should be added 2-3 times of thin phosphorus and potassium fertilizer, the specific fertilization time is determined according to the planting time of the sunflower, and it is necessary to pay attention to keeping the soil moist after fertilization.

Second, what fertilizer to apply to sunflowers.

1. Base fertilizer. Variety: mainly organic fertilizer, supplemented by chemical fertilizer.

Fertilization method: Mix the fertilizer evenly in the soil before planting the seedlings, or dig a 2-3 cm pit around the plant after planting and put the fertilizer into it.

Dosage: 5 10g organic fertilizer per plant, how to fertilize sunflowers if they are planted on a large scale? 1000-2000 kg of organic fertilizer and 5-8 kg of nitrogen fertilizer are required per mu.

2. Seed fertilizer. Variety: Phosphate fertilizer.

Fertilization method: 3-5 days after the seeds germinate, the fertilizer is sprinkled on the surface of the potting soil, which can also be within 2-3 cm next to the seeds.

3. Top dressing. Varieties: nitrogen fertilizer, potassium fertilizer, urea, etc.

Fertilization method: Dig a small pit 10-15 cm away from the sunflower, apply the fertilizer in the small pit, and pay attention not to let the fertilizer directly contact the root system of the sunflower.

4. Foliar spraying.

After the sunflower buds, we also need to carry out foliar fertilizer, so how to fertilize the sunflower at this time? Spraying a solution of zinc, copper, manganese and molybdenum on the leaves of sunflowers promotes flowering, brighter flowers and greener leaves.

Misconceptions about sunflower fertilization.

1. Pay attention to quantity rather than nutrient content.

Some people think that fertilizing sunflowers, as long as the amount is sufficient, and do not pay attention to the content of nutrients it needs, which is a common misunderstanding, when fertilizing sunflowers, you should pay attention to the proportion of nitrogen, phosphorus and potassium in the fertilizer.

2. When fertilizing, the fertilizer is sprinkled on the stem of the plant.

It is believed that sprinkling fertilizer on the stem is beneficial for the plant to absorb nutrients, but in fact this practice is wrong, because the main part of the sunflower absorption of nutrients is in the root hair area, and if it is sprinkled on the stem step, it may cause too much fertilizer.

3. Wait for the sunflower to be deficient in fertilizer before fertilization.

Once when we introduced what to do when the sunflower leaves are yellow, we mentioned that a situation is a lack of fertilizer yellow, and this situation is actually caused by the misunderstanding of fertilization, many people think that only when the sunflower is deficient in fertilizer to fertilize, but this will lead to its reduced yield.

4. Fertilizer effect immediately after fertilization.

Some people think that after fertilization, there will be fertilizer effect immediately, but the absorption of fertilizer by sunflowers will be affected by many factors, such as moisture, temperature, etc., and the fertilizer effect can only be seen after 1-2 days.

Sunflower fertilization focuses on basal fertilizer, tons of organic fertilizer per mu, and phosphorus and potassium fertilizer, generally 30 40 kg of superphosphate and 20 30 kg of potassium chloride per mu. When the basal fertilizer is sufficient, generally apply a top dressing before the sunflower buds, apply 5 10 kg of nitrogen fertilizer per mu, and the nitrogen application rate of oil sunflower can be higher than that of edible sunflower. In the later stage, foliar spraying of borax and bika potassium dihydrogen phosphate solution could promote the development of melon seeds, improve yield and quality.

This sunflower is actually a green plant, so it is better to use that kind of farm fertilizer when planting sunflowers. The sunflower grown by the farmer's fertilizer can be said to be very delicious, and its particles are also very large, which is really worth it.

Phosphate fertilizer is good for planting sunflowers, and nitrogen fertilizer and potassium fertilizer are mainly used in the early stage of fertilization.

Hello, happy to be able to answer this question for you. Yes, but not all the sunflower seed husks we see every day can be raised flowers, only raw sunflower seeds or steamed, boiled, and fried plain sunflower seed husks can be used to raise flowers. That is to say, sunflower seeds without any condiments can be directly fermented to raise flowers, and those sunflower seed shells such as spiced, caramel, garlic and so on the market should not be directly used to raise flowers.

If you want to grow flowers with "flavorful" sunflower husks, you need to remove the salt from them, otherwise it may affect the growth of flowers and plants. Hope it helps.

Sunflowers have a strong ability to absorb fertilizer, and their nutrient consumption is greater than that of food crops, so they need to supplement a large amount of nutrients to meet the requirements of development. According to research, for every 100 kilograms of seeds produced, edible sunflower needs to absorb kilograms of nitrogen, phosphorus and potassium; Oil uses sunflower to absorb kilograms of nitrogen, phosphorus, and potassium. It can be seen that no matter what kind of sunflower needs the most potassium, followed by nitrogen and less phosphorus.

The uptake of nutrients by sunflowers varies with the change of the growth center. The absorption of nitrogen, phosphorus and potassium at the seedling stage of sunflower was less, accounting for about % of the total absorption, respectively. When sunflower entered the budding stage, the plant growth accelerated and accompanied by reproductive growth, and the nutrient uptake increased, with nitrogen, phosphorus and potassium absorbing edible sunflower accounting for %, and oil sunflower group base accounting for %; Sunflower to the flowering stage, flowers and flower discs grow vigorously, and there are stems and leaves to grow, nutrient absorption also enters the peak period, for edible sunflower, nitrogen, phosphorus, potassium accounted for %, oil sunflower accounted for %; When sunflowers enter the maturity stage, seeds are formed and continuously enriched, and a certain amount of nitrogen, phosphorus, and potassium must still be absorbed. Insufficient fertilizer supply in the later stage also affects the synthesis and accumulation of oil and protein, resulting in a decrease in yield and quality.

Sunflower fertilization focuses on basal fertilizer, tons of organic fertilizer per mu, and phosphorus and potassium fertilizer, generally 30 40 kg of superphosphate and 20 30 kg of potassium chloride per trillion mu. When the base fertilizer is sufficient, generally apply a top dressing before the sunflower buds, apply 5 10 thousand grams of nitrogen fertilizer per mu, and the nitrogen application rate of oil sunflower can be higher than that of edible sunflower. In the later stage, foliar spraying of borax and potassium dihydrogen phosphate solution could promote the development of melon seeds, improve yield and quality.

It is recommended to supplement trace elements such as boron fertilizer for sunflower foliar fertilization, and can also be combined with spraying potassium dihydrogen phosphate to promote grain fullness and increase 1000-grain weight.

Sunflowers, rapeseed and other crops with more seeds have a higher demand for the trace element boron.

Especially in areas where sunflowers are planted every year, in addition to boron fertilizer for base fertilizer, spraying boron-containing foliar fertilizer before flowering can promote the improvement of sunflower pollination rate, reduce grain and increase yield.

1. Base fertilizer. Types: Mainly organic fertilizers, use as little chemical fertilizer as possible.

Method: Usually mix the fertilizer evenly in the soil before planting the seedlings or dig several holes two to three centimeters deep around the plant after planting, and apply the fertilizer to them.

2. Seed fertilizer. Types: Calcium phosphate is mainly used to add a small amount of uremia.

Directions: Three to five days after the seeds have germinated, spread fertilizer on the surface of the potting soil or apply two to three centimeters next to the seeds. In combination with sowing, apply organic and chemical fertilizers two to three centimeters below the seeds, or two to three centimeters next to the seeds.

3. Top dressing. Types: Nitrogen fertilizer is the main fertilizer, supplemented by potassium fertilizer. You can choose urea, potassium chloride and other costs or rotted human feces, sharp grass and wood ash, etc.

Method: Pay attention to the depth of fertilization, avoid direct contact with the root system, and apply it to the moist water Zen and layer, which is conducive to the fertilizer effect.

4. Foliar spraying.

Spray zinc, copper, manganese and molybdenum solutions after budding, and nitrogen, phosphorus and potassium solutions after flowering.