How to manage crop water and fertilizer in winter? Only by being cautious can you gain more!

In the cold winter, many plants have entered a dormant state, at this time the water and fertilizer management of crops needs to be very careful, if there is no careful management in winter, it may affect the growth of crops in the coming year. So how to manage crop water and fertilizer in winter?

1. Fertilization should not be excessive

In winter, the temperature and soil temperature in the greenhouse are relatively low, and the absorption rate of fertilizer nutrients by crops is relatively low. if the fertilizer is applied according to the previous amount of fertilizer, it will only lead to the accumulation of a large amount of fertilizer in the soil. Increase the concentration of soil solution, the occurrence of root burning, more serious will also lead to crop death or leaf wilting.

Second, watering is not suitable for Tasdo.

If the temperature is relatively low, it will affect the growth of crops, especially after watering, the soil temperature and air permeability will decrease, resulting in yellow leaves and retting roots.

Third, apply it according to the situation.

When the soil is relatively humid, there is no need for flushing, so as to avoid retting roots and leaves turning yellow. of course, if the fertilizer needed for crops can be provided, foliar fertilizer can be applied first, and then it can be applied according to the soil moisture.

Pay attention to ventilation

Due to the lack of ventilation in the greenhouse, nitrogen fertilizer releases nitrogen harmful substances, and when the concentration of nitrogen harmful substances is too high, it will lead to discoloration of crop stems and leaves, so from late December to early February, it is necessary to reduce the use of chemical fertilizers with high nitrogen content to avoid damage caused by harmful nitrogen gases.

Fertilizing according to the weather

When applying fertilizer, in order to avoid a cloudy day after fertilization, it is best to apply fertilizer when the weather turns fine after a cold spell, because if you encounter a cloudy day during fertilizer application, it will only increase the humidity in the greenhouse, and the surface temperature will be difficult to recover. It is not conducive to the growth of vegetables, and disease will be caused over a long period of time.

VI. Temperature management

On the first or second day after the application of fertilizer, the vents can be properly closed to increase the temperature in the greenhouse by two to three degrees, which can effectively increase the surface temperature and alleviate the adverse effects caused by the application of fertilizer.

The water and fertilizer management of winter crops needs to be treated cautiously, to reduce fertilization and watering in winter, so that plants can hibernate normally, and then carry out normal water and fertilizer management when the flowers bloom in spring.