Detailed Explanation of Key Management Techniques for Prickly Ash in Autumn and Winter

Prickly ash harvesting is gradually coming to an end. This is the critical period for controlling pest and disease damage and reducing the overwintering population of pests. Therefore, the following management techniques should be carried out well:

1. For prickly ash orchards with severe damage from prickly ash leaf-mining flea beetles, scale insects, rust disease, etc., spray the trees 1-2 times with a mixed solution of 15% triadimefon 800 times + 40% isocarbophos 1000 times + 5% beta-cypermethrin 1000 times.

2. Timely clear away dead wood, fallen leaves and weeds, and burn them in a centralized manner to eliminate sources of pests and diseases.

3. Farmers who need to establish prickly ash orchards or replant seedlings should select good prickly ash seedlings, choose overcast and rainy days, and plant with leaves to ensure the survival rate.

4. Seize the time to apply base fertilizer in autumn. The specific method is: for prickly ash trees on flat land, the ring-shaped fertilization method can be used, with a ring depth of 30-40 cm and a width of 40 cm. Generally, for 1-4 year old trees, apply 20-30 jin of farmyard manure and 0.5-1 jin of multi-element compound fertilizer containing nitrogen, phosphorus and potassium per tree; for trees over 4 years old, apply 40-50 jin of farmyard manure and 1-2 jin of multi-element compound fertilizer per tree. For prickly ash trees planted on sloping land or ridge edges, the amount of fertilizer applied per tree should be somewhat less than on flat land.

5. Earnestly carry out the shaping and pruning of prickly ash trees to improve the ventilation and light conditions of the orchard, so as to increase prickly ash yield and quality.

6. Do a good job of drainage for prickly ash to prevent the trees from dying from waterlogging.