The Technology of automatic dripping Fertilizer for Tree Trunk

   trunk automatic drip of micro-fertilizer can promote tree vegetative growth and development, improve pollen viability and fruit setting rate of walnut trees. The use of tree infusion technology can reduce or alleviate the tree water deficit in arid areas, replenish the tree in time at the critical moment, and ensure the water supply in the critical period such as flower bud differentiation and fruit development.

The picture shows walnut

The method of automatic infusion of fertilizer into    trunk is as follows: cobalt is a small hole at the base of the trunk 10 cm from the ground, reaching to the xylem, and the nutrient solution is mixed into the infusion bottle according to the results of tree nutrition diagnosis, and the xylem is injected into the hole through a disposable infusion device. The input liquid can be transported upward with the water in the xylem duct to all parts of the tree. The infusion speed is adjusted according to the absorption rate of the nutrient solution by the tree. The infusion time should be avoided during the bleeding period. After infusion, treat the wound with insecticide and fungicide, seal the wound with wet mud and protect it with black plastic sheet to prevent the invasion of diseases and insects.

The transfusion volume of    varies greatly with different tree age and tree potential. When the tree is old, the transfusion volume is large, and the climatic conditions also have a great influence on the transfusion volume of the tree. when the weather is dry and the transpiration intensity is high, the infusion speed is fast, the water consumption of the tree is large, and the amount of external infusion is large, otherwise it will be small. Fertilizer input concentration is too low, too high input concentration will cause drug damage, the first symptom is the leaf, leaf edge dry coke, and then wilting, when the injury is serious, bud germination will be blocked. And the effect of simply importing chemical salts is not good. Liu Genbao and others repeatedly studied the application concentration and formula, selected the most living concentration and formula, and applied for the national invention patent. In different liquid formulations, the addition of complexing agent can slow down the tracing resistance between the same valence elements and reduce the occurrence of fertilizer damage. Nevertheless, the relationship between tree infusion dosage and dose rate under different sites and climatic conditions is still a complex problem, which needs to be further studied and solved.