1、 Continuous cropping

There are many reasons for the rotten root of scallion. If it is because of continuous cropping, the soil should be changed by rotating with other crops, but it should be noted that garlic and leek, a lily crop, can no longer be used

2、 There are root maggots at the root

If there is rotten root caused by root maggots and other pests in the root, it should be timely controlled with symplectic sulfuric acid or chlorpyrifos and other granular insecticides, which should not be allowed to damage

3、 Water pollution

The rotten root of scallion may also be due to the polluted water used in watering, resulting in the damage and decay of its root. Attention should be paid to watering with clean water

4、 Drug damage

Herbicides and other drugs sprayed during curing are unsafe, which will cause drug damage and root rot. We should strengthen the management of water and fertilizer and promote the growth of seedlings