A planting method for reducing fluorine content in tea tree leaves

Abstract

The invention belongs to the tea tree planting field, and specifically relates to a planting method being able to reduce fluorine content in tea leaves. The planting method being able to reduce fluorine content in tea leaves is characterized by applying a root fertilization method to cultivation of low fluorine spring tea, before the end of December in winter in the first year, ditching with a depth of 15-20 cm and a width of 9-10 cm by using a water drip line of tea plant rows, and applying the root selenium fertilizer to the soil in the ditches; and applying a leaf surface spraying method tocultivation of low fluorine summer and autumn tea, before picking the summer and autumn tea in the second year, trimming the tea trees, and before and after germination of the tea trees, spraying theleaf surface selenium fertilizer to leaf surfaces of the tea trees uniformly. The planting method being able to reduce fluorine content in tea leaves has the advantages of changing the occurrence form of the fluorine in the soil through biochar and humic acid, reducing the absorption of fluoride ions by the roots of the tea trees, using the enzyme bacteria to jointly improve the acidic environment of the soil at the same time, and promoting selenite to exist in the state of anions so as to enable the roots of the tea trees to preferably absorb the selenite to achieve the aim of comprehensively controlling reduction of the fluorine content of the tea leaves.

Description

technical field [0001] The invention belongs to the field of tea tree planting, in particular to a planting method for reducing fluorine content in tea tree leaves. Background technique [0002] Tea tree is a fluorine-rich plant, the fluorine content of the leaves can account for 98.1% of the whole plant, and it is mainly accumulated in mature leaves. If you drink a lot of high-fluorine tea for a long time, the fluorine content in the human body will exceed the standard (>4mg / day), causing fluorosis. Therefore, solving the problem of tea-drinking fluorosis is directly related to the safety and health of consumers in drinking tea. [0003] At present, the main methods to reduce the fluorine content in the fresh leaves of tea trees are to add defluoridation agents to the soil, improve soil pH, and change soil fertilization techniques. Commonly used defluoridation agents mainly include dolomite powder, quicklime, peat and biochar, etc. By changing the form of fluorine in t...

AI Technical Summary

Problems solved by technology

However, there are significant differences in the fluoride content of tea in different seasons, and it is difficult to achieve the goal of reducing the fluorine content of tea with a single defluoridation measure, and the use of these defluoridation agents has the problem of causing secondary pollution