How to deal with the continuous low temperature and rainy weather, the growth of watermelon seedlings is stagnant and the roots are yellow?

When a seedling is pulled down, its roots are all yellow without white roots, and some roots are still rotten. This is the case with retting roots. Therefore, the absorption of nutrients by the root system of vegetables is blocked, and nutrients cannot be transported upward from the root system, so the upper leaves slowly turn yellow, dry and rotten seedlings, which leads to the inability of vegetables to grow and affect the harvest. What should we do in this situation?

First, timely drainage;

In the plot where we grow vegetables, we must first do a good job of drainage. Don't choose low-lying plots that are easy to accumulate water. After the heavy rain, we should dig the gap in time for drainage.

Second, loosen the soil in time;

Because of the continuous rainfall, the soil is easy to harden and harden, which leads to the weak absorption of nutrients by plant roots. It is necessary to loosen the soil with hoes in time. Let the soil breathe freely and improve the air permeability of the soil. The soil is loose and it is easy to send new roots into the soil.

Third, scatter plant ash in time;

Plant ash is very absorbent. Sprinkling a layer of plant ash can help the soil absorb some excess water. Moreover, plant ash is rich in alkalinity and phosphorus and potassium. Because of the rain, the soil tends to turn sour. Plant ash can neutralize the acidity and alkalinity of the soil.

The nutrients contained in plant ash are also good fertilizers for vegetables. Plant ash can sterilize and prevent insects, which is prone to diseases and insect pests after raining, and also plays a preventive role. This in turn can better promote the growth of vegetables.

Fourth, topdressing in time;

Because of the continuous rainfall, the rain washed away the land, leading to the rapid loss of nutrients. Sprinkle some compound fertilizer in time after rain, and cooperate with root promoter, which can supplement nutrition, promote root development and restore growth as soon as possible. Fifth, supplement foliar fertilizer in time;

After the rain stops and the sun comes out to restore soil moisture, it is necessary to spray some foliar fertilizer in time, plus brassinolide and gibberellin, so that plants can resume growth as soon as possible.

After the phenomenon of dead trees and rotten seedlings appears, irrigating the roots with potassium antiseptic acid and Trichoderma harzianum from mineral sources can promote the growth of capillary roots and also play the role of root cultivation and protection. Only when the roots are well established can the vegetables resume growing as soon as possible.

6. control moisture;

When the weather improves, we should control the moisture and try our best to make the soil dry. When watering, water frequently. It is also necessary to pull out the rotten seedlings as soon as possible to avoid the occurrence of germs.

Later: Everyone knows that growing vegetables is most afraid of rainy days. Because continuous rainy days are easy to accumulate water, the soil is easy to lack oxygen, and after lack of oxygen, it is easy to cause yellowing of crop leaves and seedling death. So it is difficult to avoid growing vegetables in the open field. However, as long as the above remedial measures are mastered, the growth of vegetables can be restored as soon as possible and the yield can be increased.