Soil amelioration method in citrus orchard

Abstract

The invention relates to a soil amelioration method in a citrus orchard. The method comprises the following steps: performing fertilization in autumn: applying a microbial fertilizer and oyster shellpowder to soil after fruits are picked; performing fertilization in spring: applying a microbial fertilizer and a microbial liquid to the soil during root growth in early spring; and performing fertilization in summer: applying a microbial liquid to the soil before root growth in summer. The method disclosed by the invention is aimed at soil deterioration under citrus site conditions, improves soil physical properties by additionally applying a large amount of organic matter and supplementing beneficial active bacteria with abundant varieties, and cultivates a good soil environment around a citrus rhizosphere; the beneficial active bacteria can antagonize harmful fungi, improve utilization of nutrient elements in the soil, promote the extension and outward extension of citrus roots, facilitate absorption and utilization of nutrient substances by the citrus roots, thereby enhancing tree vigor, reducing an occurrence of diseases and obviously improving yellowing of citrus leaves; and themethod disclosed by the invention can reduce application frequency of chemical pesticides and reduce use of chemical fertilizers by 20% every year.

Description

technical field [0001] The invention belongs to the technical field of citrus cultivation, and in particular relates to a soil improvement method for citrus orchards. Background technique [0002] Citrus is the most produced fruit in China and is deeply loved by Chinese people. Citrus diseases and insect pests in southern China's citrus producing areas have become more and more serious in recent years, and citrus leaf yellowing is becoming more and more common. The growth of citrus is inseparable from the soil, and the soil environment of the site is one of the important factors affecting the growth of citrus. The yield of citrus is high and the growth cycle is long, and the demand for fertilizer and water is large. It needs to supplement a large amount of nutrients every year to meet the needs of citrus growth and development. However, the long-term and extensive use of chemical inputs such as chemical fertilizers, chemical pesticides, and herbicides in citrus producing a...

AI Technical Summary

Problems solved by technology

However, the long-term and extensive use of chemical inputs such as chemical fertilizers, chemical pesticides, and herbicides in citrus producing areas has caused soil conditions to deteriorate, including soil acidification, herbicide residues, accumulation of pesticide residues, and growth of harmful fungal communities in the soil.

The deterioration of soil conditions is the main reason for the weakening of the growth of the aboveground parts of citrus, the increase of pests and diseases, and the yellowing of various physiological and pathological leaves, which seriously restricts the good development of the citrus industry.