The control method of winter melon seedling retting root

Retting roots, also known as rotten roots, is a common disease during the nursery period. Mainly damage the roots or rhizomes of seedlings. When retting occurs, the roots do not develop new or adventitious roots. The root bark rusts and rots, causing the upper part of the ground to wilt, and it is easy to pull up, and the upper part of the leaf edge is burnt. In severe cases, the pieces become dry and seem to be deficient.

The prevention methods are as follows:

1. Select the disease-tolerant Guangyou 1, Daqingpi, Axel and other excellent wax gourd varieties, cold-resistant pineapple species, and rain-resistant Guanxing 2 varieties.

2. Apply the compost made by enzyme bacteria or fully decomposed organic fertilizer.

3. The border surface should be flat and prevent flooding.

4. Strengthen the management of the ground temperature during the nursery period, avoid the seedbed ground temperature is too low or too humid, and correctly grasp the air release time and the amount of ventilation.

5. Use electric heating wire to raise seedlings and control the temperature of the seedbed at about 16°C, generally not lower than 12°C, so that the seedlings can grow vigorously.

6. After slight root retting occurs, the soil should be loosened in time, the ground temperature should be raised, and the new roots should be grown before the normal management.

7. Root-enhancing agent can be sprayed when necessary.

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