How to remedy the yellowing of wheat seedlings when straw is returned to the field

Sprinkle fertilizer when it rains.

Solution to the problem of wheat yellow leaves.

Hello dear I am glad to answer for you, the source of wheat is only straw causes of wheat yellowing: first, due to shallow ploughing, large amount of straw returned to the field, and the land preparation is not fully suppressed and steadfast, resulting in the root system of wheat after emergence in the loose cracked straw, it is difficult to absorb nutrients in the soil well, plus straw corruption also needs a certain amount of nitrogen fertilizer and wheat seedlings to compete for fertilizer, resulting in temporary defertilization of wheat seedlings causing yellowing; Second, the ratio of nitrogen, phosphorus and potassium is unreasonable, especially in some plots of compound fertilizer, due to the different nutrient content in the compound fertilizer, some of the wild seeds are low in nitrogen and high in phosphorus. The third is poor sowing quality and too deep sowing

1. Fertilization: When the wheat seedlings are yellow, they need to be top-dressed, with nitrogen, phosphorus and potassium compound fertilizer to supplement the nutrients lacking in the plants. 2. Watering:

Wheat seedlings will dry yellow when they lack water and need to be watered 2-3 times a week. 3. Thinning seedlings: Pull out the wheat seedlings that grow too much to increase the light transmittance of the wheat field.

4. Disease prevention: water the root of the wheat seedling with a fungicide to make the tip of the seedling green.

1. Apply fertilizer

Wheat seedlings need sufficient nutrients in the growth process, when breeding wheat seedlings, if the plant lacks nitrogen, phosphorus and potassium elements, it will cause the leaves of wheat seedlings to turn yellow, and nitrogen fertilizer, potassium fertilizer and phosphorus fertilizer need to be applied to wheat seedlings to promote their vigorous growth, and during the growth of wheat seedlings, it is necessary to spray potassium dihydrogen phosphate to delay the senescence period of the plant.

2. Watering management

Wheat seedlings are not drought tolerant, when breeding wheat seedlings, if the rainfall is too little, it will lead to a lack of water in the plant, which makes the leaf tips of wheat seedlings dry and yellow, and the frequency of watering needs to be adjusted according to the weather conditions, and can be watered 2-3 times every other week in the dry season to maintain the normal growth of wheat seedlings.

3. Thinning seedlings and seedlings

When breeding wheat seedlings, if the sowing amount is too large, it will lead to the plant growth is too intensive, so that its ontogeny becomes weak and the leaves turn yellow, the wheat seedlings need to be manually thinned, the seedlings with poor growth can be pulled out, the light transmittance and ventilation of the wheat field are increased, and the healthy growth of wheat seedlings is promoted.

4. Prevention and control of pests and diseases

Wheat seedlings will turn yellow in the case of infection with root rot, when breeding wheat seedlings, you need to dig a pit at the root of the plant, and then pour the fungicide into the pit to eliminate the germs at the root of the wheat seedling, so as not to make the situation more serious, and it is best to choose to carry out the root irrigation when the weather is sunny to avoid rain taking away the agent.

There are several reasons why wheat turns yellow at the seedling stage. Common meteorological factors, soil problems and pests and diseases, generally the following control measures can be taken:

1) Meteorological factors: for low temperature, soil drought, strong wind and frost and other meteorological factors, caused by yellow leaves. Because the time of the appearance of this yellow leaf is often closely related to weather changes, the range is often very large, generally do not need to be controlled, and serious can be applied with fast-acting fertilizer to promote the growth of wheat seedlings.

The method of prevention and control of wheat seedlings and yellow leaves caused by soil fertilizer deficiency is to timely top dressing and irrigation.

2) Soil problems: due to improper fertilization, soil compaction may affect the growth of wheat roots, resulting in yellow leaves at the seedling stage of wheat. The control measures are to improve the soil, increase the application of organic fertilizer, and rationally use chemical fertilizers.

Pest and disease factors: (1) Pests: If the influencing factors are underground pests in the soil, they cause the yellowing of wheat seedlings.

The prevention and control methods are: it can be treated with pesticide seed dressing, such as phosphine, chlorpyrifos, etc. (2) Diseases:

Generally, wheat seedlings turn yellow, and there are three common diseases: sheath blight, total erosion and root rot. Since they are fungal diseases, they mainly rely on soil transmission, and they may cause wheat to turn yellow at the seedling stage and show yellow leaves in the early stage. Prevention and control measures:

It is necessary to destroy the diseased residues, and use decomposed fertilizers and pesticides to dress seeds. For example, the spraying of well-gangmycin, tebuconazole, propiconazole and other drugs can prevent and control the spread of diseases. When spraying with a solution, care should be taken to spray it on the base of the wheat stem and partially infiltrate the soil.

It is advisable to spray 60 100 catties per mu.

Four major reasons cause wheat to turn yellow, Fengxin experts will teach you what to do.

1. Natural return of straw to improve soil and increase nutrients Iron stubble sowing is carried out iron stubble sowing, that is, wheat straw is left in the ground, not harvested, and let it naturally decay into fertilizer. When sowing, the seeds are sown directly in the gaps of the wheat field, so that the straw can be returned to the field naturally. Advantages:

It can improve the soil structure and increase the soil organic value content. Disadvantages: It is suitable for manual sowing, and the wheat straw will hinder tillage when the machine sows.

2. Crush wheat straw into fertilizer Use a cultivator to crush the wheat straw and cover it directly on the soil, so that the straw will naturally rot in the soil and be converted into nutrients in the soil. Advantages: It can improve the soil structure and also increase the soil organic value.

Disadvantages: It takes a cost for the cultivator to crush wheat straw, and the processing and covering of wheat straw also requires manpower to cooperate, which is a bit troublesome.

3. Feed processing to make feed for cattle, horses, donkeys and other livestock is also a recognized solution, and the straw is crushed and dried and stored, and sold to the farm, which can also get an income. Problem: There are more than 150 cattle farms in the city, because the feed of dairy cows needs nutrients, and the fiber of wheat straw is too fine, which is not conducive to the absorption of nutrients, so most dairy farms use corn straw to process and make feed.

However, there are few large-scale livestock farms such as donkeys and horses in the city, so the demand for wheat straw is not large.

Fourth, the transformation of energy straw comprehensive utilization technology, ecological energy cycle mode is the new potential of rural energy saving, data show that straw can produce artificial panels, can replace wood, save energy. Problem: Due to the problems of capital and first-class links, it will take time to popularize such technology and energy, and if the wheat straw is transported to the field for processing, the cost will outweigh the losses.

Fifth, the use of rice and wheat straw crushing and fermentation after the cultivation of oyster mushrooms, fungus, shiitake mushrooms, straw mushrooms, shimeji mushrooms, enoki mushrooms, agaricus mushrooms and other edible mushrooms, can not only obtain higher economic benefits, but also can be used as high-quality organic fertilizer after the use of the medium to return to the field. Problem: This requires a certain amount of technical and financial investment, and there is not a lot of straw to digest.

Sixth, the use of straw to raise earthworms We have many rivers and ditches here, every year there are many people with yellow eel baskets to catch yellow eels, and this method to catch yellow eels needs to use earthworms as bait, because there are more people under the yellow eel, earthworms are also nervous, we can use straw to raise earthworms. Advantages: small cost, almost none, but also more benefits.

Challenge: This also requires technology, and there is not a lot of straw to digest. If we can combine these methods, it will definitely reduce the burning of straw and create economic benefits for us.

1) The sowing density of wheat is too large during sowing, resulting in too many wheat seedlings, insufficient nutrition of wheat seedlings, and yellowing. (2) The low terrain of the field or the drainage of the mu cavity of the fast man is blocked, resulting in the wheat seedlings being soaked in water, and the roots of the wheat seedlings are affected, and the wheat seedlings will turn yellow. (3) The fertility of the field is insufficient, and the nutrients of wheat are insufficient, generally lacking nitrogen, phosphorus and potassium.

4) Wheat seedlings are severely frozen, resulting in serious water shortage of wheat seedlings, resulting in yellowing. (5) The large amount of straw returned to the field caused the roots of wheat seedlings to not be able to absorb nutrients well in the soil, resulting in malnutrition and yellowing. (6) There are too many weeds in the land, competing for nutrients with wheat seedlings, making wheat seedlings malnourished.

Slow aging (7) root rot causes wheat roots to rot, which cannot absorb nutrients well, making wheat seedlings nutrient-deficient. (8) The concentration of herbicides is too large, which causes pesticide damage to wheat seedlings.

Hello, according to your question, the reasons for the old yellowing of wheat seedlings: a stirring is a mole cricket insect pest, which causes the rhizomes of wheat seedlings to be bitten into a messy filament, so that the wheat roots are separated from the soil, and the leaf tips are yellowed, and in serious cases, the seedlings will dry up and die; The second is the wheat round spider insect infestation, which absorbs the mesophyll tissue fluid of wheat seedlings and causes the leaves to turn yellow, and in severe cases, the seedlings will dry up and die; Third, the bottom fertilizer was not applied, the wheat seedlings were slender and lost green, and the leaf tips were yellow; Fourth, the wheat field is low and easy to be soaked in water, the roots of the seedlings are flooded and blackened, the aboveground parts are stiff but not hairy, and the leaves are yellow.

I hope my answer can help you, and I wish you and your family good health, a happy life, and a happy life! <>