Scientific cultivation and Management techniques of Walnut trees

1. Site selection and cultivation: walnut is suitable for growing on sandy soil and black loam with warm, deep soil layer and good drainage, and should be planted on sunny slope and leeward. Newly planted young trees should have sufficient water and fertilizer, and new high-fat film should be sprayed to ensure aboveground water evaporation, seedling water transpiration, isolation of diseases and insect pests, shortening slow seedling period and speeding up root development.

2. Shaping and pruning: in order to make walnut early fruiting, high yield, stable yield, reasonable shaping and pruning is a very important cultivation technique. The pruning period of walnut is different from that of ordinary fruit trees. after the fruit is taken, before the leaves turn yellow, the wound of walnut should be smeared with healing film in time to promote wound healing and prevent bacteria from invading and infecting.

3. Stable flower and fixed fruit: in the bud stage, young fruit stage and fruit expansion stage, Zhuangguotieling should be sprayed to thicken the fruit pedicel, increase the amount of nutrition transport, prevent flowers from falling, improve the ability of pollination, increase the rate of fruit setting and accelerate the speed of fruit expansion, so as to ensure the high quality and high yield of fruit. The size of the tree hanging fruit makes the load of the tree unbalanced, which affects not only the balanced income, but also the health of the orchard. It is necessary to brush Huawang No. 2 once a year in the period of flower bud differentiation, which can promote flower bud differentiation, inhibit summer shoot growth, strengthen flowers and improve pollination ability and fruit setting rate.

4. The main pests of walnut are: walnut silkworm moth, walnut limb moth, walnut fruit weevil. The main diseases of walnut are walnut black spot and walnut branch blight. Prevention and control measures were sprayed with targeted drugs to kill. At the same time, the trees should be sprayed to protect the trees, and the garden should be sprayed with a new high-fat film to keep warm and preserve moisture to ensure safe passage through the winter.