The causes and control methods of the latest leaf dry tip of Chinese chive

Leek is a popular vegetable in our life, which has a wide planting area, but the phenomenon of dry tip of leek often occurs when we plant it, which seriously affects the variety of leek and reduces the economic benefits. it must bring economic losses to farmers. So what is the reason for the dry tip of leeks? How to prevent and cure it? Let's take a look at the pro-farm network.

1. Soil acidity is high.

Leek likes the soil to be neutral. If the soil acidity is too high during planting and growth, or if acid fertilizers such as dilute manure, cake fertilizer or ammonium sulfate are applied in the soil for a long time, the soil acidity will also be increased and acidified. On the other hand, when leek grows in acidified soil, it will lead to acid damage to flowers, slow leaf growth, and leaf tip will turn yellow and dry.

Prevention and control methods: check the pH value of the soil before planting, pay attention to fertilization, not long-term application of acid fertilizer, if the soil acidification phenomenon, can be sprinkled in the soil lime powder to adjust pH, but not suitable for use in the greenhouse.

2. Harmful gases

The phenomenon of leek leaf dry tip caused by harmful gas mainly occurs in the greenhouse, which is disadvantageous to the emission of harmful gas because of the slight difference between greenhouse permeability and open-air planting. The application of a large amount of acid fertilizer in front of the plastic shed will make it produce a large amount of ammonia during decomposition. Coupled with planting in the greenhouse, the content of ammonia in the air will become higher and higher, thus making the leek yellow leaves and dry phenomenon.

Prevention and control methods: rational use of manure and chemical fertilizer, should not be applied too much at one time, follow the principle of a small amount of more application, watering in time after fertilization, serious application of acidic fertilizer, as far as possible to apply completely mature organic fertilizer.

3. High temperature and poor ventilation

Leek is a temperature-loving vegetable, suitable for growing in an environment of 5-35 degrees, but if the temperature exceeds 30 degrees for a long time, there is no timely ventilation, or if it suddenly clears up after a rainstorm, there will be withered leaves.

Prevention and control methods: master the correct ventilation method, but when the temperature in the greenhouse is 20-30 degrees, you can release a small wind appropriately, and with the temperature rising, ventilation should be enhanced accordingly. The speed of ventilation should be slow, it is not suitable to let cold air enter suddenly, adjust the temperature difference between day and night properly through ventilation to reduce the temperature.

4. Malnutrition

In the growth of leek in addition to the common elements, but also need a variety of trace elements, if there is a lack of these trace elements, leading to malnutrition, will also lead to the dry tip of leek. For example, in the case of calcium deficiency, the leaves yellowed and the dry tip died; while in the case of boron deficiency, the heart leaves yellowed and grew slowly, while if there was excess boron, the heart leaves would also die.

Prevention and control methods: proper application of some organic fertilizer during fertilization to ensure the growth of leek, such as etiolation and dry tip due to malnutrition, the corresponding trace elements should be added in time.

The above are the reasons for the dry tip of leek leaves brought by the pro-agricultural network and the prevention and control methods. I hope it can help you. If you want to know more about leek planting technology, please pay attention to the pro-agricultural network.