What is missing in the yellowing of the leaves of the plant, and what elements are missing when the

Lack of water, light, fertilizer, and iron.

The yellowing of plant leaves is generally caused by lack of water, light, fertilizer, and iron. During the growth of the plant, it is necessary to water it in time, the soil should not be too dry and should be kept in a moist state. Plants need to be properly exposed to light, do not keep in the shade for a long time, and provide astigmatism or sufficient light for plants according to their habits.

During the growth period, it is necessary to apply a small amount and many times, and if there is a lack of iron, you can use ferrous sulfate solution to cover it. ”

This one definitely works.

1. Plants lack nitrogen fertilizerNitrogen fertilizer is mainly leafy, lack of nitrogen fertilizer, the growth rate slows down, the leaves become thinner, the color shows yellow-green, yellow-orange and other abnormal green, the old leaves at the bottom are gradually dried and withered, with the serious lack of nitrogen fertilizer, the branching ability of the root system becomes less, the plant becomes sparse, and the subsequent flowering and fruiting will be affected.

2. Plants lack phosphate fertilizer.

Phosphate fertilizer is to promote flowering and fruiting, the lack of phosphate fertilizer shows that only the leaves are not branched, the leaf color is dark green or gray-green, the leaf edge appears purple-red, and the leaves are easy to fall off; Late flowering or no flowering. Phosphorus deficiency symptoms generally start at the base of the stem and gradually progress upwards.

3. Plants lack potassium fertilizer.

Potassium fertilizer is strong roots, lack of potassium fertilizer, old leaves and leaf margins yellow, and then brown, scorched like burning, but the middle of the leaves and leaf veins are still green; As the degree of potassium deficiency intensifies, the whole leaf becomes reddish-brown or dry. The root system is underdeveloped, the resistance becomes poor, and it is prone to rot and lodging.

Yellowing of the leaves of trees is most likely due to a deficiency of calcium, iron, nitrogen, phosphorus and potassium.

If the young leaves turn yellow during the growth period, it may be due to a lack of calcium and iron. Calcium maintains the structure of the cell and allows it to function properly, and if calcium is insufficient, the sprouts and leaves will turn yellow. Iron promotes the formation of chlorophyll, and if there is a lack of iron in new leaves, the color will turn yellow.

The calcium required for the growth of trees generally comes from the soil, and the fertile soil contains a certain amount of calcium, which can meet the normal growth of trees. Iron comes from the soil and regulators, during the maintenance period, if the tree is deficient in iron and causes the leaves to turn yellow, it can be watered with ferrous sulfate solution, which can be supplemented with iron, which is conducive to the growth of trees.

During the growth period of the tree, the leaf color of the old leaves turns yellow, in addition to the normal shedding of the leaves aging, it may be a lack of nitrogen, phosphorus, potassium and other elements. Nitrogen, phosphorus, and potassium are important elements for tree growth, all of which come from fertilizers. Nitrogen fertilizer promotes the formation of chlorophyll and the growth of branches and leaves, and is generally suitable for fertilizing trees during the growth period.

Phosphorus can promote the growth of trees, which can make them photosynthesize normally, which is conducive to the formation of chlorophyll. Potassium can enhance the ability of plants to resist diseases and droughts, and can prevent trees from being attacked by pests and diseases that cause yellowing or wilting of leaves. Phosphorus and potassium are derived from phosphate and potassium fertilizers, which are important nutrients for trees during their growth.

Under normal circumstances, if the young leaves of the plant are newly grown and yellow, it should be due to a lack of iron and calcium. If the old leaves of the plant are yellow, it is a lack of nitrogen, potassium, phosphorus and magnesium, and the specific condition of the plant should be observed and solved.

1. Lack of nitrogen fertilizer.

Nitrogen fertilizer is very important in the process of plant growth, once the lack of nitrogen fertilizer, the old leaves of the plant will begin to yellow, and then the whole plant will appear from the bottom up, the leaf yellowing phenomenon. It is necessary to supplement nitrogen fertilizer in time, and apply urea, ammonium nitrate, and bean dregs to plants to make their leaves green.

2. Lack of phosphate fertilizer.

The yellowing of the leaves may also be due to a lack of phosphate fertilizer, which can turn dark green and lose its vitality and luster if the plant grows under. And the leaves are yellow. At this time, it is necessary to supplement phosphate fertilizers such as ammonium phosphate, white phosphorus fertilizer, animal ashes or bone char in time to restore the luster of the leaves.

3. Lack of potassium fertilizer.

Sufficient potassium fertilizer will make the leaves smooth and flat, otherwise there will be uneven leaf surfaces, and the edges of the leaves will slowly appear yellow and withered. At this time, it is necessary to supplement potassium fertilizer in time, and apply plant ash or chemical fertilizer potassium chloride at the bottom of the pot to make the potassium fertilizer sufficient, and the plant leaves become flat and smooth again.

4. Lack of calcium fertilizer.

Calcium fertilizer is very important for the growth of young leaves on plants, and a lack of calcium can cause the young leaves to turn yellow and start to curl. At this time, calcium fertilizer should be applied in time for nutritional supplementation, you can break the unused egg shell, and then soak the broken shell in water for fertilizer, and add water to dilute it for spraying after a week, so that the seedlings can recover their health.

Lack of nitrogen fertilizer: Supplement plants with urea, ammonium nitrate, bean dregs and other fertilizers. Lack of potash:

Apply plant ash or fertilizers such as chemical fertilizers and potassium chloride to the roots to keep the leaves smooth. Lack of phosphate fertilizer: apply ammonium phosphate, white phosphorus fertilizer, animal ashes or bone char, etc.

Lack of calcium fertilizer: the leaves will turn yellow and curly.

1. Lack of nitrogen fertilizer.

If the leaves of the plant begin to turn yellow from the old leaves, and the whole plant gradually begins to appear yellow leaves from bottom to top, it means that the plant is in a state of lack of nitrogen fertilizer at this time, and it should be immediately supplemented with urea, ammonium nitrate, bean dregs and other fertilizers to maintain the balance of nitrogen in the body.

2. Lack of potassium fertilizer

If the leaves of the plant start to turn yellow from the edges, and the surface of the leaves becomes uneven, it means that the plant lacks potassium in the body, and you can apply plant ash or chemical fertilizer, potassium chloride and other fertilizers to the root system of the plant, and sufficient potassium fertilizer can keep the leaves smooth and flat.

3. Lack of phosphate fertilizer

In the process of plant growth, if the leaves show symptoms of yellowing, and the whole plant loses its luster, and the whole plant is dark green, it may be because of the lack of phosphorus fertilizer in the tree, you can supplement it with ammonium phosphate, white phosphorus fertilizer, animal ashes or bone char and other fertilizers.

4. Lack of calcium fertilizer.

If the leaves of the plant appear yellowing and gradually curl the symptoms, indicating that the body is relatively lacking in calcium, pot farming, you can break the eggshell at home, soak in water for a week, and wait for it to fully decompose, dilute it with water into liquid fertilizer, spray on the plant leaves.

Lack of nutrients and lack of iron will make plant leaves yellow, which can be alleviated by watering diluted ferrous sulfate; Lack of light, lack of light will also make the leaves unable to synthesize chlorophyll yellow, and need to be transferred to a diffuse and ventilated environment for maintenance; Lack of water, soil drought and lack of water will also cause the leaves of the plant to turn yellow, which needs to be alleviated by watering a small amount of water in time.

The yellowing of plant leaves may be due to a lack of iron, sulfur or magnesium, and it needs to be targeted**. When iron is lacking, it is necessary to water the diluted ferrous sulfate solution in time to allow the plant to recover as soon as possible. If magnesium or sulfur is lacking, a nutrient-rich compound fertilizer should be applied to restore the growth of the plant as soon as possible.

Plants need to synthesize chlorophyll through photosynthesis during growth, and if the leaves cannot photosynthesize in a dark and dark environment for a long time, they will wilt and turn yellow. Therefore, it is necessary to place the plants in a ventilated and cool astigmatism environment for maintenance, and do a good job of shading measures when the light is too strong.

Plants have a high demand for water during the growth period, and if they grow in a dry environment for a long time, the roots will not be able to absorb water, which will cause wilting. It is necessary to water a small amount of water in the soil in time, and after the potting soil is found to be dry during the later maintenance, it is necessary to water it in time to make the soil in a slightly moist state, but do not produce stagnant water.

Most plants are not cold tolerant, and if they are kept in a cool and cold environment for a long time, the leaves of the plants will turn yellow. Therefore, in the process of daily maintenance, it is necessary to transfer to the indoor warm environment in time after the temperature drops in winter, and control the room temperature above 10.