Why do you need different things in spring and summer? Why should more nitrogen fertilizers be added to the soil in spring and the first half of summer? Differences between spring and summer sun rays

08.03.2020 Heaters

In spring and the first half of summer, active plant growth occurs. Proteins are built from nitrogen, which is how the plant grows.

Overwintered perennials initially grow from nutrient reserves accumulated in the bulbs, rhizomes and roots. But already in the first stages of growth they need nitrogen. Therefore, during the period of snow melting, it is necessary to apply nitrogen fertilizers at the rate of 20-30 g/m2. for bulbous plants and 10-15 g/m5 for other perennials. Phosphorus and potassium fertilizers are recommended to be applied in autumn or spring, when the soil is first loosened, 50-60 g/m2 of phosphorus and 20-30 g/m2. potassium

The second fertilizing with nitrogen is carried out 3 weeks after the first at 20-30 g/m2.
The third feeding is done during the period of budding or flowering with a complete mineral fertilizer in the form of a solution containing 10 g of nitrogen, 30 phosphorus and 20 potassium fertilizers per 1 square meter. flower garden

In autumn, fertilizing is required for all perennials; per 1 sq. m. The flower bed should contain 10 g of nitrogen, 50-60 g of phosphorus and 30 g of potassium fertilizers.
This is the general scheme for applying mineral fertilizers when caring for flower beds. However, it is advisable to differentiate the doses of fertilizers depending on the biological characteristics of the plants.

Thus, bulbous plants (hyacinths, tulips, daffodils) are plants with a short-term nutritional period that absorb nutrients in the fall, from the moment of formation of new roots and intra-bulb development. Soil preparation for bulbous plants is carried out 1.5-2 months before planting with the application of organic fertilizers (8-10 kg/m2), a full dose of phosphorus and potassium (6-9 g/m2 of each type) and a half dose nitrogen (4.5-6 g). In the spring, when sprouts appear, nitrogen fertilizers of 10-15 g/mg ammonium nitrate are applied to tulips and daffodils, and nitrogen and potassium are applied to hyacinths at 6 g/m2. flower garden

It is recommended to apply 8-10 kg/m2 annually for lilies. organic fertilizers (leaf soil), and at the age of 3-4 years - mineral fertilizing with a total annual dose of: nitrogen 9, phosphorus 9 and potassium 12 g/m2. flower garden The first feeding is carried out at the beginning of spring growth with nitrogen (3 g/m2), the 2nd - during the period of strong vegetative growth with nitrogen (3 g/m2) and potassium (6 g/m2); 3rd - during the budding period, with a mixture of fertilizers - nitrogen and phosphorus, 3 g each, and potassium, 6 g/m2. In the fall, additional 6 g/m2, underused in fertilizing, is added. phosphorus.

When caring for peonies, fertilizing with mineral fertilizers should be done according to the following scheme: first - during the period of sprouting (nitrogen); the second - during the budding period (nitrogen, phosphorus, potassium); third - at the beginning of flowering (nitrogen, phosphorus, potassium); the fourth - a month after the start of flowering (phosphorus, potassium). The rates of fertilizer applied to peonies depend on the age of the plants: for 2-3 year olds the dose of general fertilizer is 12 g, and from 4 years old - 16-18 g a.i. each element by 1 and 1.

Korean chrysanthemums also need mineral fertilizing: at the beginning of growth - nitrogen, before budding - phosphorus and potassium. It is recommended to apply 1.5 g of the fertilizer mixture in liquid form per 10 liters of water.

Irises require three feedings: the first - during the period of sprouting, the second - a month after the first (nitrogen, phosphorus, potassium); the third - after flowering (nitrogen, phosphorus, potassium). The total dose is 6-9 g/m2. Fertilizers should be applied in liquid form, since the rhizome is very superficial. Irises do not tolerate lime.

Why do you need to behave differently in clear sunny weather in spring and summer?

Even though it is colder outside in spring than in summer, solar radiation can also be harmful to your health. The spring sun is practically no different from the summer sun.

Differences between spring and summer sun rays

After a long frosty winter, everyone wants to bathe in the rays of the sun. A huge number of people strive to get their “sunshine vitamin” in the spring. But everything is not as simple as it seems at first glance. This is all because people consider the spring sun to be absolutely safe and harmless. This is why we practically do not use ray protection products such as cream. But in fact, in the spring the sun radiates no less. When the sun's ultraviolet rays hit your defenseless skin, they can cause burns and lead to various skin diseases. Everyone also knows that you should never look at the sun for a long time, this can lead to burns to the eye shell. Despite all of the above, you still shouldn’t spend time at home all the time. The sun's rays are rich in vitamin D, which our body needs. In order to replenish the supply of this very vitamin, which the body lacked in winter, you need to spend as much time as possible in the fresh air and walk in nature. And of course, do not forget precautions and protection measures.

Precautions when exposed to the sun

In order to avoid unpleasant consequences and burns, you should follow the rules listed below.

First of all, you should use creams that can protect your skin from solar radiation.
In order to avoid sunstroke, wear hats (caps, Panama hats, etc.).
Never be in the open sun, try to be in the shade more often.
Use sunglasses, which should be purchased at pharmacies or specialty stores.
Stay in the open sun as little as possible when it is at its zenith.

Why in the spring and summer outside the city, in the country, where there is clean air and spring water, do many people sneeze and cough again, as in a city apartment? Spring... Naturally, for every normal person this couple evokes the most pleasant emotions: the sun, the first greenery, the birds singing. What else, tell me, does the average Belarusian, exhausted by long periods of hard work, need to be happy? By the way, there is a group of people who are not at all happy about the arrival of spring, and then summer; on the contrary, they are worried. These pakutniks are allergy sufferers who react to the awakening of nature by exacerbating the disease. It is called “Hay fever”, or palinosis. What a misfortune - allergies! Allergies are perhaps the most common disease. No wonder it is called a disease of the new century. The statistics are sad: every fifth inhabitant of our planet suffers from it. This is very strange, because air washers have already been invented that can solve all problems.

But if we take into account that not everyone who sneezes and coughs has the corresponding entries in their medical records, then the extent of this phenomenon looks veliar. Allergens - the same irritants that cause a stuffy nose, watery eyes and an itchy whole body - are different for everyone. and we know them well. Therefore, by phone in advance, we ask you to lock the cat on the balcony if we are going to visit. We do not use chocolate or oranges and treat ourselves only with medications that have been tested many times. And yet, from time to time, allergy symptoms remind you of themselves. Without warning. For no specific reason. And most importantly, where you least expect them, including at home, in the country. Palinosis with enviable regularity comes to allergy sufferers in the spring, accompanies them in the summer and says goodbye only in the fall. By the way, this disease chooses each victim purposefully. Some people react already in April-May to the smells that come from the inflorescences of birch, alder, and hazel. The second suffers in June, when the cereal grasses “gather dust”, the third - in July-August, when the weeds - ragweed, wormwood and quinoa - begin to bloom. Those who are particularly unlucky may experience prachatsi and praplakatsi (the most common manifestations of palinosis) all spring and summer.

What kind of torment this is, perhaps only allergy sufferers themselves know. The food of the gods causes asthma. An allergic reaction to plants that bloom, according to doctors, is one of the most dangerous diseases. It reduces a person’s immunity, making him dependent on medications, on the weather, even on the blowing of the wind. At least last year in August in Zaporozhye, in one night alone, about 200 people came to the ambulance with complaints of unexpected suffocation. Later it became known that ambrosia pollen, which was lifted into the air by a strong wind, was to blame for everything. People reacted almost simultaneously to pollen, which deprived them of the ability to breathe normally. The fact is that ambrosia, which is also called “food of the gods,” does not grow in the crowns of paradise, but on sinful earth, and contains the most malicious allergens - provocateurs of bronchial asthma. Ambrosia begins to bloom in August and “poisons” the entire area almost until the first frost.

I have always been the type of person who believes that the sun does the most damage in summer time. But imagine my surprise when I got my first sunburn in the spring. Why did this happen, and how should you behave in clear weather to avoid it? dangers, which conceals within itself spring and summer sun?

How does the spring sun differ from the summer sun?

After a cold winter, I really want to enjoy the pleasant warm rays of the sun. Therefore, many people go outside in the spring to get what everyone needs. vitamin D. But is it really that simple? The problem is that many people are confident in the safety of the spring sun, so they neglect sunscreen. In reality, the spring sun emits no less ultraviolet than summer. If it gets on unprotected skin, it can provoke it. premature aging, burns and various diseases. Do not forget that ultraviolet radiation also reaches the retina of the eye, which can lead to burn. But this does not mean that in clear weather you need to sit at home and wait for the sun to set. In the spring, subject to all safety rules, it is advisable to spend as much time as possible in the sun to replenish supply of vitamins, which were so lacking in the winter.