Spinach is a kind of vegetable rich in multi-vitamin varieties. Spinach is grown in many areas of China, and spinach is more adaptable and cold-resistant. Recently, there are vegetable farmers in the background to consult Xiaobian spinach seeded with leaves to start yellowing. Why do you study the reason for the prevention and control of spinach leaves yellowing?
First, the reason for the yellowing of spinach leaves?
Fertilization problem
The ratio of spinach itself to a large amount of elemental NPK is 2:1:3. It can be seen that there is more demand for nitrogen and potassium fertilizer, but it can not increase the dosage for high yield or apply some fertilizer, and also lack iron and zinc. Yellow earth, small leaves, soft rot, etc. occur in the soil of trace elements such as manganese and boron. These can be solved by spraying spinach foliar fertilizer in the later stage.
2. Excessive moisture
Too much watering of spinach will cause the lack of oxygen in the roots to cause yellow leaves. Generally, watering can be inserted into the soil with chopsticks to see if there is water shortage in the roots of spinach. Generally, it is not necessary to water if it is moist.
3. Soil problems
If the spinach leaves are not new roots and the leaves turn yellow, it is mostly due to poor soil quality, poor permeability, etc., resulting in poor growth of spinach yellow leaves. At this time, soil renovation should be done to increase the permeability.
4. Normal growth judgment
If the bottom leaves of spinach grow new roots from the leaf axils, then the yellowing of the leaves is normal, which is the metabolism of the spinach itself.
Second, the prevention and treatment skills of spinach leaves yellowing
Agricultural measures
Use seeds harvested from disease-free plants. Field paving, hanging silver film strips to avoid mites. Clean the garden in time, eradicate the weeds in the field, and remove the diseased plants in time. Choose a well-ventilated, distant planting of radishes and cucumbers. Do so at the right time to avoid premature. In case of spring drought or autumn drought, watering should be done to reduce the incidence. Apply sufficient organic fertilizer, increase phosphorus and potassium fertilizer, and enhance the host disease resistance. It is necessary to control aphids during the control of aphids, especially before winter.
The above is the reason for the yellowing of spinach leaves and its prevention and control measures. If this happens in your home spinach, then come and learn to see it, have not appeared before, you can quickly prevent it!Hand Shields For X-Ray Protection,Lead Rubber Gloves,Radiation Protection Covered Lead Gloves,Hand-Guard Lead Gloves
Longkou Kangxie Medical Instrument Co., Ltd , https://www.kangxiemedical.com