Detailed Explanation of the Key Technical Points for Scientific Walnut Cultivation and Management

1. Site selection and cultivation: Walnuts are suitable for growing in warm sandy loam and black loam soils with deep soil layers and good drainage, and should be planted on sunny slopes and in wind-sheltered spots. Newly planted young trees need sufficient water and fertilizer, and should be sprayed with Xin Gao Zhi Mo (New High Lipid Film), which can ensure above-ground moisture evaporation is controlled, regulate moisture transpiration from the seedling body, isolate pests and diseases, shorten the seedling recovery period, and accelerate root development.

2. Shaping and pruning: To make walnuts bear fruit earlier, achieve high and stable yields, and be reasonably shaped, pruning is a very important cultivation technique. The pruning period for walnuts differs from that of general fruit trees; it is carried out after the fruit is harvested and before the leaves turn yellow, and a wound-healing and anti-corrosion film should be applied promptly to the cut wounds to promote wound healing and prevent invasion and infection by pathogens.

3. Stabilizing flowers and setting fruit: During the flower bud stage, young fruit stage, and fruit swelling stage respectively, spray Zhuang Guo Di Ling to thicken the fruit stalk, increase the amount of nutrient transport, prevent flower drop, improve pollination capacity, increase the fruit-setting rate, accelerate the swelling speed, and ensure high-quality and high-yield fruit. The alternate bearing of the tree body causes an imbalance in the tree's load, which affects both balanced returns and the health of the orchard trees. During each year's flower bud differentiation period, apply Huan Shua Cui Hua Wang No. 2 once around the trunk, which can promote flower bud differentiation, suppress excessive summer shoot growth, strengthen flowers, and improve pollination capacity and the fruit-setting rate.

4. The main pests of walnuts include: walnut atlas moth, walnut moth, and walnut fruit weevil. The main diseases of walnuts include: walnut black spot disease and walnut branch blight. Control measures include spraying targeted pesticides to kill them. At the same time, spray the tree body with Hu Shu Jiang Jun and spray the orchard with Xin Gao Zhi Mo to preserve warmth and moisture, ensuring safe overwintering.