Soil improving agent for reducing plumbi content of tea and method thereof

Abstract

A soil improver reducing the lead content of tea leaves and a method are provided, which is characterized in that the improver consists of a product A and a product B; wherein, the product A is calcium carbonate and / or dolomite fines and the product B is the mixture of the product A, phosphate rock powder and / or calcium-magnesia phosphate fertilizer; the weight ratio of the product A, phosphate rock powder and / or calcium-magnesia phosphate fertilizer in the product B is 2 to 4 : 1. The above soil improver reducing the lead content of tea leaves and the method provide that reducing the lead content of tea leaves is the main purpose, reasonably use the calcium carbonate, dolomite fines, phosphate rock powder and calcium-magnesia phosphate fertilizer, which not only reduces the absorption of the tea plant to the heavy metals, improves the hygienic quality standards of tea leaves but also does not affect the normal growth and development of tea plant and has the function of improving the soil and can effectively reduce the bioavailability of the lead in the tea garden soil.

Description

technical field [0001] The invention belongs to the technical field of treatment and repair of heavy metals in severely acidified soil, and in particular relates to a soil conditioner and a method for reducing the lead content of tea leaves. Background technique [0002] Lead is a highly accumulative, multi-affinity physiological and neurotoxic substance, which can cause toxicity to almost all important organs and systems of the human body, such as the central nervous system, immune system, reproductive system and endocrine system, etc. The central nervous system is particularly toxic. For children, even trace amounts of lead pollution can damage their nervous system and affect their behavior and intelligence. There are many sources of lead in the human body, mainly through food, water and air. For adults, the main way of lead intake is food. Therefore, the lead content in food, including tea, has aroused widespread concern among consumers. However, in recent years, the p...

AI Technical Summary

Problems solved by technology

However, there is still a lack of corresponding methods for how to reduce the lead content in crops in non-polluted soil such as tea gardens

Although calcium carbonate, dolomite powder, phosphate rock powder and calcium magnesium phosphate fertilizer have the obvious ability to adsorb and fix lead and reduce the bioavailability of lead in soil, there are also research reports on the treatment of lead-contaminated soil, but in the treatment of non-polluted soil such as tea garden soil has not yet been reported