Pre-emergence topdressing fertilizer for walnut tree and preparation method thereof

Abstract

The invention provides a pre-emergence topdressing fertilizer for a walnut tree and a preparation method thereof, belonging to the technical field of fertilizers. Effective components of the fertilizer comprise, by weight, 15 to 27% of nitrogen, 3 to 6% of phosphorus, 2 to 6% of potassium, 1 to 1.5% of calcium, 0.1 to 0.3% of molybdenum, 0.1 to 0.3% of manganese, 0.1 to 0.3% of copper, 0.1 to 0.3% of boron and 5 to 10% of humic acid. The pre-emergence topdressing fertilizer prepared in the invention can timely meet demands for nutrients needed in the physiological activities of germination and blossoming of the walnut tree, enables the walnut tree to rapidly germinate in early spring, strengthens respiration intensity, accelerates metabolism and cell division and allows the physiological activities of blossoming, embryo development, foliation, sprouting and the like to be smoothly carried out. When the fertilizer is cooperatively used with a micro-irrigation system, a high absorption and utilization rate and timely substantial fertilizer efficiency are realized. The preparation method has a simple process and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, in particular to a pre-emergent topdressing of walnut trees and a preparation method thereof. Background technique [0002] Over the years, my country's agricultural high yield mainly depends on the application of a large amount of chemical fertilizers, the overweight of many soil nutrients and the lack of trace elements, resulting in soil salinization and compaction and deficiencies. Such as zinc deficiency, the leaves are small and yellow, curled, and in severe cases, the leaves of the whole tree are small and curled, and the tops of the branches die; manganese deficiency, the leaves lose chlorosis, and the veins become light green, withered spots on the mesophyll and leaf margins, prone to premature Falling; boron deficiency, branches withered downwards, brown turbid spots appear between leaf veins, leaflets are easy to deform, and young fruits are easy to fall off; copper deficiency, ofte...

AI Technical Summary

Problems solved by technology

If other elements are supplemented, it will not help, and sometimes even cause antagonism to inhibit the absorption of other elements, thereby causing other deficiencies or obesity.