What causes yellowing of spinach leaves?What are the prevention and control measures?

Problems of their own, problems of the soil, problems of fertilization, problems of watering. Suggestions: strong disease resistance, improve soil properties, reasonable watering, and keep the sun and light suitable.

The yellowing of spinach leaves may be due to the metabolism of spinach, which naturally turns yellow, or it may be due to the particularly poor soil permeability of spinach, or it may be caused by excessive fertilization during the growth of spinach, or it may be caused by improper watering and overwatering;The prevention and control measures are, loosen the soil, eat some chemical fertilizer appropriately, and water the spinach reasonably.

The yellowing of spinach leaves is most likely caused by the lack of nutrients in spinach, you can apply some fertilizer to spinach, and then add more water to ensure adequate sunlight.

1. The reason why spinach leaves turn yellow.

1. Self-growth: If it is a new root that grows at the bottom of the axils of the leaves, causing the spinach leaves to turn yellow, this is a very long imagination, in terms of biology, it is metabolism, and there is no need to worry about this situation.

2. Planting soil: If the spinach leaves do not regrow new roots from the bottom of the leaf axils and cause yellowing, it is mostly because of poor soil quality and poor air permeability, which leads to poor growth of spinach and yellow leaves.

3: Fertilization problem: When spinach is planted, a large amount of nitrogen, phosphorus and potassium fertilizer elements are needed, and the ratio of nitrogen, phosphorus and potassium elements is 2:

1:3, but you can't only apply these three kinds of fertilizers, or you can cooperate with the application of some iron, zinc, manganese, boron microelements into the soil, because if these are indeed also affected by the yellowing of spinach leaves, you can also spray some pica foliar fertilizer on spinach in the later stage to increase nutrients and prevent the leaves from turning yellow.

4. Watering: In the process of spinach planting, if the amount of watering is too large, the roots of spinach will turn yellow because of the lack of oxygen and poor growth, so the leaves will turn yellow, then you can insert a chopstick into the soil when watering, to see if the roots of spinach are lacking in water, if the soil is in a moist state, there is no need to water again.

2. Prevention and control measures for yellowing of spinach leaves.

1. Agricultural measures: choose those disease-free seeds when planting, and hang some silver ash film in the field to drive away aphids. It is necessary to keep the surface of the land clean and eradicate diseased plants and weeds in time.

When planting, choose a well-ventilated terrain, and water the spinach in the dry season, which can reduce the yellowing of the spinach leaves. Fertilization can be carried out, and phosphorus and potassium fertilizers can be added, which can improve the disease resistance of spinach and make spinach grow healthily.

2. Pesticide control: In the early stage of leaf yellowing, you can spray some plant disease emulsion, or spray some anti-poison agents. For downy mildew and anthracnose of spinach, in the initial stage, it can be treated with 75% chlorothalonil 600 times solution, 25% methalonil 700 times solution, 40% ethyl phosphorus aluminum wettable powder 300 times solution, etc.

Summary. Dear, when the spinach leaves just turn yellow, you can spray some phytochloride or spray some anti-poison agents. If downy mildew occurs in spinach, it can also be sprayed at the initial stage.

When the spinach leaves just turn yellow, you can spray some phytochemicals or spray some anti-poisons. If downy mildew occurs in spinach, it can be sprayed in the initial stage also destroyed.

It is the yellowing of the heart leaves.

Pro, soils lacking in trace elements such as iron, zinc, manganese, and boron will cause spinach hearts and leaves to turn yellow.

Pro, you can apply spinach foliar fertilizer to solve the problem and do a good job of soil renovation to increase air permeability.

Spinach cracked root is what's going on, thank you.

Pro, spinach in the growth period, if the soil is dry, the root cabbage does not have enough water when it swells**, so the roots may also crack, pro, it means that your spinach growth is short of water.

What is the best fertilizer for growing spinach.

The fertilizers that spinach likes are as follows: spinach likes different fertilizers at different growth stages, and organic fertilizers need to be applied at the seedling stage. During the growth of spinach, it is also necessary to spray foliar fertilizer when it is suitable for the town of Qisheng.

Spinach likes to grow in alkaline soil, and has high requirements for nitrogen, phosphorus and potassium fertilizers.

Can a small amount of urea be poured at the seedling stage?

Pro, yes, wait for the seedlings to cover the ears and then apply a small amount of urea to the Chang stuffy faction, and water it. If the bottom fertilizer is less or no base fertilizer is applied, urea can be applied once after the emergence of seedlings, and it should also be watered with water.