Topdressing fertilizer for walnut filling stage and preparation method thereof

Abstract

The invention belongs to the technical field of fertilizers and provides a topdressing fertilizer for a walnut filling stage and a preparation method thereof so as to timely meet demands for considerable nutrients needed in physiological activities like fruit filling and kernel hardening of a walnut tree and enable growth of a fruit in the filling stage to be rapidly accelerated, metabolism to be enhanced, cell division to be speeded up, nutrients to be sufficiently accumulated and fruit quality and output to be improved. Effective components of the fertilizer comprise, by weight, 10 to 15% of nitrogen, 3 to 6% of phosphorus, 10 to 20% of potassium, 0.5 to 2 % of calcium, 0.5 to 2% of magnesium, 0.5 to 1.5% of sulfur, 0.1 to 0.8% of copper, 0.1 to 0.5% of boron, 0.1 to 0.5% of manganese, 0.1 to 0.5% of molybdenum and 8 to 10% of humic acid. The proportions of the effective components of the fertilizer are determined according to demands for nutrients in the fruit filling stage of the walnut tree, and the fertilizer can improve photosynthetic efficiency of leaves, promote nutrient accumulation, reduce physiological fruit drop, enhance metabolism, accelerate cell division, fully supplement nutrients for the kernel of the walnut tree and improve quality and output of the fruit of the walnut tree. The fertilizer is a fully water-soluble fertilizer and may be cooperatively used with a micro-irrigation system, conservation of labor and materials and a high absorption rate are realized, and waste and soil residual are avoided. The preparation method has the advantages of a simple process, low cost and suitability for industrial production.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a topdressing fertilizer during the filling period of walnuts and a preparation method thereof. Background technique [0002] Fertilization of fruit trees is one of the important measures to ensure high yield, stable yield and high quality of fruit trees. 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, bran...

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.