How do you fertilize sunflowers? What are the sunflower fertilization tips?

Sunflower is an important cash crop, and the use of correct fertilization techniques can help improve the yield and quality of sunflowers. So how can you combine other cultivation practices to maximize the effectiveness of fertilizer use? The following article provides a detailed introduction to sunflower fertilization techniques.

1. Apply enough basal fertilizer

1.The role and type of basal fertilizer. The role of basal fertilizer is to provide the nutrient needs of sunflowers throughout their growth period.

The base fertilizer should be mainly organic fertilizer, such as livestock and poultry manure, poultry manure, compost, green manure, soil fertilizer, etc. These fertilizers are long-lasting, complete and high in nutrients, and have a good effect on soil fertility and sunflower yield after application. A certain amount of chemical fertilizer should also be used.

This not only meets the nutritional needs of seedlings, but also promotes the growth of middle and late stages, especially when no organic fertilizer is applied or the organic fertilizer application rate is low, and the nutrients need to be supplemented with corresponding chemical fertilizers.

2.Fertilization cycle and method. Combined with the ground application of basal fertilizer in autumn tillage, it is more conducive to fertilization than that of spring ploughing, and can improve the seedling formation rate.

Fertilization is done by spreading the fertilizer evenly on the ground before ploughing and then ploughing into the soil. When there is less fertilizer, hole application is usually a concentrated application of fertilizer. When there is a lot of fertilizer, it should be applied partly by spreading and partly by concentrated application.

3.Fertilizer dosage. Potash fertilizer can be controlled according to the soil potassium content obtained by soil testing, and potassium fertilizer can not be applied if it reaches the normal standard, and potassium sulfate can be applied three to four per mu if it does not reach the normal standard.

Do not add urea as a seed fertilizer, otherwise it will cause sunflower seedlings to grow too vigorously, resulting in depressed fields, poor ventilation, and easy breeding of diseases.

Second, the application of seed fertilizer

1.The role and type of seed fertilizer: seed fertilizer has the effect of promoting the early development of seedlings.

After the emergence of sunflower seedlings, the initial root system is small, and the ability to absorb nutrients is weak, so the seed fertilizer should be mainly based on fast-available nutrients. For example, superphosphate, urea, ammonium nitrate, potassium oxide, potassium sulfate, and other chemical fertilizers, as well as decaying human manure and urine, grass ash, cow and sheep manure, and other agricultural fertilizers.

2.Seed fertilizer application method: fertilizer should be applied reasonably according to its nature and cultivation habits.

If the seed fertilizer is a well-decayed organic fertilizer, it has little effect on seed germination and young roots, and can be applied directly to the seeds or mulched on the seeds. If it is a chemical fertilizer, it can be applied in the hole or strip of the sowing furrow, and it must be kept at a proper distance from the seed, otherwise it will have adverse consequences and affect the emergence of seedlings. Nitrogen and potassium fertilizers are also applied at a distance of about 8 cm per leaf and flower plate.

3. Timely top dressing

1.Seedling fertilizer: spring sunflower, when the base fertilizer or seed fertilizer is relatively sufficient, generally do not chase. In contrast, sunflowers sown in summer and autumn require topdressing and fertilization.

2.Fertilize during flowering. The critical period for the fertilization of sunflowers is before the appearance of flower buds. Nitrogen and potassium fertilizer is generally chased in seven or eight pairs of leaves, and it is advisable to top dressing earlier without topdressing. Boron fertilizer has a good effect on sunflower yield, and boron fertilizer should be increased when the available boron content in the soil is low.

Sunflowers should be fertilized regularly, choose the right day for fertilization, water after fertilization, and then fertilize every once in a while, so that sunflowers can live better.

You should choose the right fertilizer, and then you should also pay attention to the time of fertilization, do not fertilize when it rains, otherwise it will affect the effect of fertilizer, do a good job of drainage and ventilation, pay attention to temperature control, and keep the light sufficient.

Grasp the composition of fertilizer, grasp the time of fertilization, be sure to do a good job of drainage, and ensure the air permeability of the soil. It is better to choose compound fertilizers.

After flowering, it is necessary to spin phosphorus and potassium fertilizer, (where the plants with long fruits and seeds can not lack phosphorus and potassium fertilizer, and all long-leaved flowers and plants can not lack nitrogen fertilizer) once a week, dilute with water, take turns to apply local watering every week, and it is strictly forbidden to fertilize around, in case there will be rotten roots too much, 2 grams each time is enough, depending on the size of the pot. Do not sprinkle the flowers anymore, this will shorten the flowering period and lead to thanks. If the indoor ventilation is not good and the temperature is high, the water can breed bacteria, causing the flowers to rot, which seriously affects the appreciation.

If you feel that the indoor air is relatively dry, you can spray around the sunflowers, the fragrance will spread faster and the fragrance will be more intense.

During the flowering period, some potassium dihydrogen phosphate fertilizer ratio of 1:1000 times of liquid mixed with water can be used to spray leaves or irrigate roots, which is conducive to promoting the fullness of seed particles in the late flowering stage and improving yield. Sunflower is a plant suitable for outdoor maintenance, with sufficient sunlight and good ventilation, and it is also conducive to attracting bees to pollinate and improve the inoculation rate.

Sunflower has a large demand for potassium fertilizer, and compound fertilizer or rotted cake fertilizer can be used in the early stage of fertilization, and fertilizer is applied once every half a month or so. After entering the flowering period, you can appropriately reduce the interval of fertilization, apply fertilizer every 7-10 days, and increase the amount of phosphorus and potassium fertilizer, especially potassium fertilizer, you can use some bone meal or plant ash.

Sunflowers have well-developed root systems and are drought tolerant but not drought tolerant. From sowing to budding, the arid environment is conducive to the growth and development of its root system, but as the light increases, the evaporation of water accelerates, and the plant needs nutrients to flower and bear fruit. Especially during the flowering season, hydration can ensure the quality of the flowers.

It is important to take care of the sunflower after it has bloomed. When the sunflower buds, it is necessary to add more fertilizer to it at this time to promote the sunflower trunk to be thick and strong, and the flower disc to grow. After the sunflower blooms, it is also necessary to apply thin fertilizer frequently, because sunflower seeds must be born in the later stage, and fertilizer should also be applied in time in order to make the flower seeds full.

To ensure that the branches are lush and the nutrients needed for flowering, once a month in winter, pour water into it. During the spring growth season, it can be once half a month.

The base fertilizer of sunflower should be mainly organic fertilizer, and more phosphorus fertilizer should be applied when planting, and proper top dressing should be applied after planting.

When fertilizing sunflowers, you can choose organic fertilizer, farmhouse fertilizer, or nitrogen, phosphorus and potassium fertilizer, but these fertilizers are best used when planting, which will make the plant grow better.

Before planting sunflowers, organic fertilizer should be used as the main base fertilizer, and more phosphorus fertilizer should be eaten when planting, and proper top dressing is also needed in the future.

The fertilizer should be buried in the roots of the sunflower, which is more conducive to the absorption of the fertilizer by the sunflower.

In daily life, we can often see sunflower seeds, which can be used to extract oil, but also can be used to eat, and is rich in nutrients and benefits, so it is also very widely planted, so when is the sunflower fertilization time? What are the misconceptions about sunflower fertilization? I'll take you to learn about the bridge!

1. Sunflower fertilization time.

In the growing period of sunflowers, generally 20 days up and down fertilization once, if it is in full bloom should also be added 2-3 times of dilute phosphorus and potassium fertilizer, the actual fertilization time according to the sunflower planting time to calculate, fertilization must pay attention to maintain the moisture of the soil layer.

Second, the misunderstanding of sunflower fertilization.

1. Pay attention to the total number but not the nutrient content.

Some people think that the total amount of fertilizer to sunflowers is sufficient, and they do not pay attention to the composition of nutrients it must have, which is a more common misunderstanding, and 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 main stem.

Everyone thinks that sprinkling fertilizer on the stem is beneficial to the main stem to digest and absorb nutrients, but in fact this kind of behavior is wrong, because the key position of sunflower digestion and absorption of nutrients is in the root hair area, if sprinkled on the stem step is likely to cause too much fertilizer.

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

In the past, when we introduced the yellowing of sunflower leaves in detail, we mentioned that a condition is the lack of fertilizer yellow, and this phenomenon is actually caused by the misunderstanding of fertilization, many people think that only when the sunflower is deficient in fertilizer to fertilize, but that will cause its yield to be limited.

4. Fertility will be immediately after fertilization.

Some people think that after fertilization, they will immediately have fertility, but they do not know that the digestion and absorption of sunflowers for fertilizer will be harmed by many forest reasons, such as moisture and temperature, and fertility can only be seen after 1-2 days.

The above is a detailed introduction to the sunflower fertilization time and its misunderstandings, and I look forward to my sharing to help everyone.

Be sure to choose the right fertilizer, you can choose phosphate fertilizer, potassium fertilizer, nitrogen fertilizer, and then you should also choose to fertilize when it is sunny, do not fertilize on rainy days or windy weather, otherwise it may affect the effect of fertilizer, and then you should also add an appropriate amount of water to dilute it.

You can choose some organic fertilizer, and you should also choose some heavy fertilizer. It is better not to use chemical fertilizers. And you should choose to fertilize about 20 days after the growing season. You can have a very good **, and you can also make sunflowers thrive in life.

Before the sunflower is planted, it is necessary to compost or split the group, and different fertilizers need to be selected according to the growth situation during the growth period of the sunflower source, and fertilization is also required during the fruiting period.

I think that phosphorus and potassium should be applied as the main fertilizer, supplemented by boron and zinc, which can promote the enlargement of sunflower flower discs, bright flower colors, full seeds, and greatly improve yield. Because the sunflower has flower buds, the main growth period has passed, it is necessary to apply less nitrogen fertilizer, otherwise it will cause the plant to grow, lush branches, the most needed is nitrogen, phosphorus and potassium fertilizer during the bud stage, which basically accounts for one-third of the total fertilizer, foliar fertilizer is recommended to choose high magnesium type additional trace amount, which can quickly increase the chlorophyll content and promote photosynthesis.

According to the growth of the plant, soil conditions, applied base fertilizer, etc., reasonable topdressing. Top dressing is mainly concentrated in the period from budding to flowering of sunflowers, and fertilization is applied in small pits at a distance of 10 to 15 cm from sunflowers. Water Sunflower drought tolerance is strong, seedlings to flowering before water absorption, only accounted for 20 25 of the whole growth period, flowering to seed filling period to ensure that the water is the key to high yield and harvest.

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

Planted in the soil of the general open-air nursery, it can grow to more than 2 meters, sunflowers grow quite quickly, usually planted for about two months to flower, its flower type has a single petal, double petal or single flower, multi-flower, the flowering period is quite long up to more than two weeks. Fertilization period and method. Combined with the application of basal fertilizer in autumn, it is more conducive to fertilizer preservation and can improve the seedling emergence rate than that applied in spring.

Fertilization method, combined with mechanical operation, is used to spread, rake evenly and then plough. Horse-drawn farming implements are used to apply fertilizer to the furrows and then close the ridges.

The fertilization period and method, combined with the application of basal fertilizer in autumn, are more conducive to fertilizer preservation and can improve the seedling emergence rate than that applied in spring. Fertilization method, combined with mechanical operation, is used to spread, rake evenly and then plough. Horse-drawn farming implements are used to apply fertilizer to the furrows and then close the ridges.

A stellate bud with a diameter of 1 cm appears at the top of the flowering stage of the sunflower. Commonly known as the bud, from the bud to the flowering period, the sunflower needs fertilizer, water should be applied at most, phosphorus fertilizer, potassium fertilizer-based compound fertilizer.

It is best to fertilize before planting and before flowering, and give it enough fertilizer before planting to promote the rapid germination of sunflowers, and before this flowering period, give it topdressing in time to make it bloom as soon as possible, prolong the flowering period, and allow it to produce more seeds.

I think fertilization is very important when planting sunflowers, so it is better to fertilize sunflowers in the morning, when the air and sunlight are more abundant.

Sunflowers are best fertilized when planting, because it is very convenient and hassle-free, and it can also be used very highly, and the yield will be very high.

It is better to fertilize on rainy days, because at this time the fertilizer melts better and can be better absorbed by the sunflowers.

Fertilizer is the main nutrient of sunflowers**, and reasonable fertilization is the key to high yield of sunflowers. Fertilization should be carried out according to the law of fertilizer demand, and the specific methods are as follows.

First, the base fertilizer. Organic fertilizer is the main ingredient combined with chemical fertilizer. Confessional Qi Jing period and method.

Autumn application of basal fertilizer combined with tillage is more conducive to fertilizer retention and seedling emergence rate than spring application. Fertilization method, combined with mechanical operation, the use of paving, harrowing, tillage. Horse-drawn farming implements, fertilizing in furrows, and then joint ridges.

Fertilizer dosage. 1000-2000 kg of organic fertilizer, 5-8 kg of chemical fertilizer, 5-8 kg of nitrogen fertilizer, and 4-5 kg of phosphorus pentoxide (P2O5) per mu. Potash fertilizer can be controlled according to the soil potassium content derived from soil testing.

If it reaches the normal standard, it is not necessary to apply potassium fertilizer, and if it does not reach the normal standard, 3-4 kg of potassium sulfate can be applied per mu.

2. Seed fertilizer.

Seed fertilizer is mainly phosphorus application to achieve the purpose of strengthening seedlings. For example, ammonium bicarbonate or calcium phosphate plus a small amount of urea can also be used as seed fertilizer. The use of seed fertilizers. In combination with sowing, apply organic and chemical fertilizers 2-3 cm under or next to the seeds.

3. Top fertilizer. The fertilizer applied after the emergence of sunflowers is called Rangling top dressing. Sunflower is a crop that requires a lot of fertilizer.

Only basal fertilizer and oral fertilizer can not fully meet the vegetative growth and reproductive growth of sunflower at the budding stage and late growth stage, and then the nutrient demand. Especially for summer sunflowers, top dressing is more important when the base fertilizer is insufficient or not applied. Top dressing is mainly nitrogen fertilizer, with a certain amount of potassium fertilizer.

The types of fertilizers include ammonium nitrate, urea, ammonium bicarbonate, potassium chloride and other fertilizers, as well as well-rotted human manure, plant ash and other fast-acting fertilizers. Generally, dig a small pit 10-15 cm from the roots of the sunflower, and then cover it with soil. The depth of fertilization depends on the type of topdressing and soil moisture.

Volatile fertilizers such as ammonium bicarbonate and ammonia should be applied deeply, and when the soil is dry, it should also be applied deeply, so that the fertilizer can be in contact with the moist soil, so as to facilitate the timely use of fertilizer effect. If the early topdressing of the cultivator is adopted, it can be used in combination with the first cultivating, the depth of the tillage is 8 10 cm, and it must be about 15 cm away from the seedlings. In the later stage of topdressing, it can be combined with the next tillage, topdressing between rows, and the tillage depth is still 8 10 cm.

In short, when topdressing, we should pay attention to the depth, and apply it to the moist soil layer, but do not damage the root system of the plant because of the deep application, and be careful not to let the fertilizer get too close to the plant and burn the root system.

4. Spray fertilizer on the front of the leaves.

Spraying zinc, copper, manganese and molybdenum solutions at the budding stage of sunflower can increase the oil content of seeds, reduce the empty rate and improve the fullness of seeds. Foliar spraying with urea solution can significantly increase yields. Spray 1:

3:3 solution of nitrogen, phosphorus and potassium can greatly increase the yield and increase the oil content.