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Amendment and method for reducing activity of lead in soil of tea garden

An amendment and soil technology, applied in the application, organic fertilizer, climate change adaptation and other directions, can solve the problems of raw material acquisition and production difficulties, and achieve the effect of alleviating the acidification of tea garden soil, reducing the risk of lead pollution, and having a wide range of sources.

Inactive Publication Date: 2016-08-10
TEA RES INST GUANGDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material acquisition and production of this method are relatively difficult, and the phosphate rock itself contains various heavy metals and fluorides such as lead, arsenic, cadmium, etc. Excessive application of phosphorus will also cause eutrophication of the water body with soil erosion

Method used

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  • Amendment and method for reducing activity of lead in soil of tea garden
  • Amendment and method for reducing activity of lead in soil of tea garden
  • Amendment and method for reducing activity of lead in soil of tea garden

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. A improver for reducing lead activity in tea garden soil, the preparation steps comprising:

[0052] (1) Raw material preparation: select one or more of livestock and poultry manure such as cow manure and pig manure, crop straw such as rice straw and bean straw, garden litter, tea residue, and traditional Chinese medicine residue. Simple treatment of suitable organic materials (livestock and poultry manure can be used directly, other types need to be properly crushed to 1-5mm diameter particles), and mixed according to a certain ratio. When the mixing ratio is determined, the total C / N is 20-40 Between is better. Add water to adjust the water content at 40% to 60%, and naturally stack and decompose for 30 days.

[0053](2) Inoculate earthworms and process organic materials: Eisenia chinensis is selected as the inoculation worm species, the inoculation density is 1-20 / kg material, the cultivation time is 30-60 days, and the water content is controlled at 40%-60% duri...

Embodiment 2

[0057] 1. Use cow dung as a raw material, take 50 kg of cow dung, put it in a material box of 60cm×40cm×20cm, adjust the water content to 50%, and let it rot for 30 days. After decomposing, inoculate 500 Eisenia chinensis and cultivate for 60 days, and maintain the water content at 50% during the cultivation. After the earthworms are sorted out, the vermicompost is air-dried, passed through a 2mm sieve, and used as a modifier. The picked earthworms can be sold separately, and can also be used as the next batch of worm species for making improvers.

[0058] 2. Take 0-20cm soil from the tea garden in the northeast of Yingde City (24.3178 north latitude, 113.7803 east longitude). After the soil is air-dried and passed through a 2mm sieve, the pH value is 4.06, and the organic carbon content is 15.55g·kg -1 , total nitrogen content 0.71 g·kg -1 , alkaline hydrolysis nitrogen content 57.2mg·kg -1 , the available phosphorus content is 37.7 mg·kg -1 , available potassium content...

Embodiment 3

[0065] 1. Using rice straw as a raw material, take 30kg of rice straw from a paddy field, dry it and crush it through a 2mm sieve. Adjust the water content to 40%, and put it in a 60cm×40cm×20cm material box to rot for 30 days. After decomposing, inoculate 300 Eisenia chinensis, and cultivate for 60 days. After the earthworms are sorted out, the vermicompost is air-dried, passed through a 2mm sieve, and used as an amendment.

[0066] 2. Get the tea garden soil at the same location as in Example 1, pass through a 2mm sieve after air-drying, and set aside. Mix the above-mentioned amendments and soil according to the proportions of 0%, 2.5%, 5%, and 10%, respectively, and then put them into a round plastic flower pot with a diameter of 15 cm and a height of 12 cm. The water content in the pots was maintained at 50-60% of the maximum field water holding capacity of the soil, and all treatments were placed in a cool and ventilated place indoors, and the indoor temperature was main...

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Abstract

The invention discloses an amendment and method for reducing activity of lead in soil of a tea garden. The high-efficiency amendment capable of reducing activity of lead in soil of the tea garden is prepared by digesting and decomposing agricultural organic waste by using earthworms and picking out the earthworms to obtain earthworm manure, i.e., the amendment. With the amendment, activity of lead in soil of the tea garden can be reduced while fertility betterment is realized. The amendment can effectively alleviate acidification of the soil of the tea garden and reduces the content of lead in a water soluble state and an exchange state in soil, so absorption and accumulation of lead by tea leaves can be substantially reduced; meanwhile, the amendment can improve soil fertility, increases supply of available nutrients like nitrogen, phosphorus and potassium, enhances physical and chemical properties of soil and provides an excellent soil ecological environment for growth of a tea tree.

Description

technical field [0001] The invention belongs to the technical field of tea tree cultivation and management. More specifically, it relates to a improver and method for reducing lead activity in tea garden soil. Background technique [0002] my country's tea production and consumption rank first in the world, and it is a major economic and cultural asset of our country. In recent years, the phenomenon of excessive lead content in tea has occurred frequently. Lead is a heavy metal element that seriously endangers human health and can affect various organs of the nervous and hematopoietic systems. The lead in tea mainly comes from the soil, and the lead in the soil comes from natural sources such as volcanic eruptions and forest fires on the one hand, and on the other hand mainly comes from man-made emissions such as industry and transportation. Motor vehicle exhaust emissions, brake pad and tire wear, and lubricating oil burning all contribute to the accumulation of lead in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F3/00C05G3/04C05G3/80
CPCC05F3/00C05G3/80Y02A40/20
Inventor 周波唐劲驰黎健龙唐颢方华春
Owner TEA RES INST GUANGDONG ACAD OF AGRI SCI
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