Do you know how to use foliar fertilizer and what time points to remember?

Foliar fertilizer is quickly absorbed and effective, and is mainly used in the middle and late stages of crop growth. It has a significant effect on fruit expansion and yield increase, and is most used by fruit trees and vegetable farmers. As we all know, no matter how good the fertilizer is, the wrong way to use it is in vain!

Next, let's talk about a few precautions for the use of foliar fertilizers. Before we do that, let's talk about the advantages of foliar fertilizers.

Seedlings refer to orchids that are bred in a completely "unfamiliar" natural environment, because it takes a certain amount of time to adapt to the new environment. Within 7 days after planting, it is called the slow seedling stage, when its rhizomes are almost inactive, but at the same time, the orchid plant consumes nutrients and is not easy to stop.

Leaf fertilizer is undoubtedly the most suitable choice. At this time, spraying some potassium dihydrogen phosphate can push its serving pot to avoid the weeding of the seedlings. It is most appropriate to use a concentration value of up to 1200 times, and the same proportion of urea can be added.

5-7 days after planting and spraying, the effect is better.

Orchids need to do 2 things a week before seedling, do you know? The first is to drain the water, which can make the root more malleable, so that it is not very easy to break when the seedlings are repotted. The second is to spray leaf fertilizer, at this time, spraying potassium dihydrogen phosphate can make the orchid plant accumulate more nutrients, so that the seedling can be less and less consumed during the potting period after the seedlings are divided.

At this time, the spraying is basically similar to the previous section, and the concentration value is proposed to be about 1200 times, and the same proportion of urea can be added (if it is a summer and autumn season to divide the seedlings, it is not recommended to add urea after the beginning of autumn).

The new seedlings of orchids that sprout at the beginning gradually begin to scatter their leaves. The absorption capacity of this kind of leaves in the early stage is not too strong, if you spray some shallow leaf fertilizer, you can speed up their absorption capacity.

After the absorption capacity of the new seedling is enhanced, it is also beneficial to the growth of its new roots (each new seedling must have its own rhizome), so as to produce steady development. At this time, the concentration value does not need to be higher than 1200 times to prevent the new seedlings from being unsuitable and causing the seedlings to burn. In particular, the concentration of urea must be controlled below 1200 times.

Whelan and Orchid enter the flower bud differentiation stage, in addition to the need for moderate drainage, the filling of phosphorus and potassium is very important. At this time, spraying potassium dihydrogen phosphate does not need to add urea, because we have to control the supply of base fertilizer to prevent orchid farmers from growing and competing for nutrients, which will affect the promotion of flowering.

The concentration value is higher than the previous ones, 800 times is the most appropriate, continue to spray twice, the cycle is about 15 days. Potassium dihydrogen phosphate in autumn can not only enhance the probability of pregnancy buds for orchids, but also improve its cold tolerance during winter, so spraying connection points is very important.

1. Instructions for the use of foliar silicon fertilizer (rice type, wheat type):

Spraying time: depending on the degree of cultivated land pollution, you can choose to spray cadmium foliar fertilizer 1-2 times from the vigorous tillering period of rice and wheat to the heading period; Choose a sunny or cloudy day to spray around 4 p.m.

Dosage description: about 1 bottle of cadmium foliar silicon fertilizer per mu each time; Artificial spraying needs to be mixed with water 50-100 times; UAV spraying with water 5-10 times; Foliar sprays are applied. Based on the principle of foliar dripping, the number of spraying should be increased according to the degree of pollution of cultivated land.

Field management: Same as normal field management.

2. Precautions for the use of cadmium foliar silicon fertilizer:

1. When using, it should be used now, and the foliar silicon fertilizer should not be stored for a long time.

2. Foliar spraying is required with a sprayer with good atomization effect.

3. Do not use it in rainy days, if it rains 24 hours after spraying foliar silicon fertilizer, it needs to be supplemented. Do not spray when exposed to the sun to avoid burning the leaves.

4. Do not spray with pesticides or other foliar fertilizers, so as not to affect the effect.

5. Store in a ventilated and cool place. When spraying, you need to wear gloves, masks, and work clothes to prevent the entrance from entering the eyes, and splashing ** should be quickly cleaned with water.

6. Keep out of reach of children to prevent children from eating by mistake.

Hope it helps

It should be at 6 a.m. and 6 p.m. Because at this time, it can make the foliar fertilizer fully exert its role, and it can also allow the plant to absorb it faster.

It is important to keep in mind that foliar fertilizer can be used at 9 o'clock and 12 noon, when it is already two or three o'clock in the afternoon, and at six or seven o'clock in the evening, which will give the best results.

When using foliar fertilizer, then we should also pay attention to the growth of the leaves, and then fertilize to provide good nutrition to the plants.

1.Foliar fertilizer spraying period.

There are three prerequisites for foliar fertilizer spraying: crop failure to grow after disaster and continue to be nutritious; Insufficient base fertilizer and lack of a certain element; Growers want to get better planting yields, quality and other special requirements. Therefore, this requires farmers to grasp according to the characteristics of different crops.

If farmers want to get better fruit quality (sugar content, color, etc.), they need to spray amino acid foliar fertilizer during the expansion period of fruit trees, and the effect is the best.

2.Determine the appropriate dosage and concentration.

The spraying concentration is 2-3 times for stem and leaf crops, and 2-3 sprays for fruits and vegetables, and if there are more leaf hairs, it is necessary to increase the number of sprays or add binders to foliar fertilizer to help absorption. Generally, the frequency of foliar fertilizer spraying is about 10 days.

3.Foliar fertilizer spraying method.

In principle, spraying fertilizer needs to be sprayed on both sides, but because there are more pores on the back, the effect of crop absorption after spraying fertilizer is better, so it is recommended that you try to spray fertilizer evenly on the back of the leaves. When spraying, you need to adjust the sprayer to a fine mist shape, which makes it easier to adhere and absorb.

4.Pay attention to the timing of spraying and natural conditions.

Foliar fertilizer sprays should be done around 9 a.m. on cloudy or sunny days, and the wind speed should not be too high. If it rains, you need to spray it in time. The optimal temperature for foliar fertilizer absorption is 25, so it is also important to know the spraying temperature.

5.Mixed application of foliar and soil fertilizers.

The amino acid foliar fertilizer made by fermentation with Gymboree amino acid foliar fertilizer starter culture is very cheap and large. Therefore, if crops need to be sprayed with foliar fertilizer for a long time or in large quantities, they can consider applying foliar fertilizer to the soil at the same time to reduce labor and ensure the needs of plant growth.

6.Take care to use adhesives.

Foliar fertilizers such as soap powder can be considered to maintain the adhesion time of fertilizer, so as to improve the efficiency of fertilizer absorption.

Problems to be noted when using foliar fertilization.

1 Choose the appropriate spray concentration. The concentration of foliar fertilization is directly related to the effect of spraying, if the concentration of the solution is too high, it is easy to burn the leaves of crops after spraying; The concentration of the solution is too low, which not only increases the workload, but also fails to meet the requirements of supplementing crop nutrition. Therefore, in the application, it is necessary to prepare according to local conditions according to the symptoms of fertilizer and crops.

2 Choose the appropriate spraying method. The preparation solution should be uniform, the spraying fog point should be even, and the number of spraying should be as needed.

3 Master the spraying period. The period of foliar fertilization should be sprayed according to the demand for nutrients at different growth and development stages of various crops, and the most urgent nutrient needs of crops should be selected to achieve the best effect.

4 Choose the appropriate spraying time. Foliar fertilization effect is directly related to temperature, humidity, wind, etc., foliar spraying is best to choose no wind cloudy day or humidity, evaporation is small before 9 o'clock in the morning, the most suitable is after 4 o'clock in the afternoon, if it rains 3-4 hours after spraying, it is necessary to carry out supplementary spraying.

5 Select the appropriate spray site. Due to the different metabolic vitality of the leaves and stems of the upper, middle and lower parts of the plant, the ability to absorb nutrients from the outside world varies greatly, so the appropriate spraying site should be selected.

6. Add additives. When spraying fertilizer on the foliar surface, additives should be added appropriately to improve the adhesion of fertilizer solution on plant leaves and promote the absorption of fertilizer.

7 Combine with soil fertilization. Because the roots have a larger and more complete absorption system than the leaves, it is determined that more than 10 foliar fertilization of large amounts of nutrients such as nitrogen, phosphorus, potassium, etc., can reach the total amount of nutrients absorbed by the roots. Therefore, foliar fertilization cannot completely replace the root fertilization of crops, and must be combined with root fertilization.

The amount of foliar fertilizer is small, the effect is rapid and obvious, and the utilization rate of fertilizer is improved. It is an economical, effective and good fertilization measure, especially the foliar application of some trace elements is more unique. However, we should also note that foliar fertilization is more troublesome, consumes more labor, and is susceptible to climatic conditions, and the effect of foliar fertilization varies greatly due to different crop types and growth periods.

Therefore, on the basis of root fertilization, the foliar fertilization technology must be correctly applied in order to give full play to the role of foliar fertilizer in increasing yield and income.

When the basal fertilizer is insufficient, the foliar fertilizer based on nitrogen and phosphorus fertilizer can be selected; When the basal fertilizer is sufficient, the foliar fertilizer based on trace elements is selected. The spraying concentration of foliar fertilizer must be strictly controlled, especially for foliar fertilizer containing growth-regulating substances; It is best to spray in the early morning or late afternoon when the wind is not strong.

You can try the concentrated phosphorus and potassium essence of Demer Tianye and organic slow-release nitrogen fertilizer, which is very effective and saves a lot of time.

1. When the root system of crops becomes old and the absorption capacity becomes weak, foliar fertilizer is applied.

In the middle and late stages of annual crop growth and development, the root charm declined and the fertilizer absorption function decreased. If you want to fertilize crops, the root application method cannot meet the needs of crops, and it is suitable to use foliar sprays.

2. When crops are deficient, foliar fertilizer must be applied.

In the case of crop growth and development, its function has already shown some trace element inattention symptoms, if the soil layer is used to fertilize, it must pass a certain period of time before the nutrients can be digested and absorbed by the crop, and the symptoms of crop deficiency cannot be immediately alleviated. At this time, if you choose foliar fertilizer, you can make full use of the advantages of fast digestion and absorption of foliar fertilizer, so that nutrients can quickly enter plant cells according to the leaves, and deal with the problem of nutrient deficiency.

3. When the growth and development of crops suffer from poor environmental hazards, foliar fertilizer must be applied.

When the soil quality is not good for the growth and development of crops, such as too much water or drought, the soil layer is acidic or too alkaline, it will lead to the digestion and absorption of nutrients by crop roots, and the crops must quickly resume normal growth and development.

4. Quickly fill in the medium and trace elements, and apply foliar fertilizer as much as possible.

Some chemical fertilizers such as phosphorus, iron, manganese, copper, zinc fertilizer, etc., if applied as roots, are very easy to be fixed by soil colloidal adsorption, reducing the actual effect of application. The selection of foliar spraying is not easy to be limited by soil characteristics, and has the advantages of less fertilizer, good effect, high utilization rate, safety, and green environmental protection.

5. When the fertilizer on the soil layer cannot be operated, foliar fertilizer must be applied.

For the crops covered with plastic film, the land that is not paved with drip irrigation pipes, in the case of insufficient amount of basal fertilizer, the selection of soil layer fertilization can not be carried out, so it is necessary to use foliar fertilizer spraying to fill the need for nutrients. However, some deep-rooted crops have more intake of some trace elements, and if the traditional fertilization method cannot be applied to the root digestion and absorption position, and its fertility cannot be fully utilized, foliar spraying can obtain good practical results. The use of foliar fertilizer can make crops more digestible and absorbed, which not only saves the amount of fertilizer applied, but also alleviates the environmental pollution of soil layer and water resources, which is a reasonable fertilization technology that kills two birds with one stone.

The actual effect of foliar fertilizer is directly related to the ambient temperature, environmental humidity, wind speed, etc., and it is best to carry out foliar spraying before 9 o'clock in the morning when there is no wind to enter the rainy day or the ambient humidity is relatively large, and the water surface evaporation is small, and the most suitable is to carry out after 4 o'clock in the afternoon, if it is 3 or 4 hours after the spray, it is necessary to carry out supplementary spraying.

For example, if the leaves fall too much or the fruit cannot grow, and it looks like it wants to wither, it needs to be beaten. Probably used at night.

The leaves are yellow, the root system of the crop is aging, the crop is defertilized, and the crop lacks the corresponding trace elements, which is affected by the adverse environment; Foliar fertilizer is better sprayed before 10 a.m. and after 4 p.m.

When crops are deficient in trace elements, nutrients are insufficient, when the roots of crops are aging, and when the leaves turn yellow and fall. Before 10 a.m. and after 4 p.m.

Foliar fertilizer is best used in the middle and late stages of flowering; Foliar fertilizer can be mixed with pesticides, which can not only effectively control pests and diseases, but also increase the relative nutrition of plants.

Foliar fertilizers should be used in the spring; We can compare the foliar fertilizer with more water, and then place it in a watering can for dilution and spraying.

It can be used when there are some problems with the crop. It can be used with farm fertilizer, which can better help the growth of crops and improve the yield of crops.