Measuring method of soil carbon sequestration effect in rice growing season and a kind of biochar composition

A composition and biochar technology, which is applied in the direction of fertilizers made from biological waste, microbial treatment, fertilizer mixtures, etc., can solve the problems of complex measurement methods and large influence on measurement results, so as to improve carbon sequestration effect, increase yield and Quality, growth promotion effect

Active Publication Date: 2020-08-07
CAPITAL NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Recent studies have shown that China's farmland soil organic carbon has shown an increasing trend in the past 20 years, especially the accumulation of organic carbon in paddy soils in the south is significantly faster, and the mineralization stability is relatively high. It is of great significance in the research of global agriculture and carbon cycle. At present, the methods for measuring the carbon sequestration effect of rice soil are relatively complicated, and the measurement results are greatly affected by various factors.

Method used

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  • Measuring method of soil carbon sequestration effect in rice growing season and a kind of biochar composition
  • Measuring method of soil carbon sequestration effect in rice growing season and a kind of biochar composition
  • Measuring method of soil carbon sequestration effect in rice growing season and a kind of biochar composition

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Provide a method for measuring the soil carbon sequestration effect in the rice growing season, as follows:

[0028] (1) Determining that the soil is the sandy loam soil used in the northern japonica rice experiment, and the soil before and after the planting of rice is collected respectively for measurement;

[0029] (2) Weigh 1g of the soil to be tested, oxidize and air-dry it, put it into a test tube, add 30mL of 0.167mol / L potassium dichromate solution for oscillation, then quickly add 25mL of concentrated sulfuric acid with a mass fraction of 95%, shake for 3min, then let stand for 40min, and After placing, use a dropper to absorb 5 drops of the supernatant, add it to the hole of the colorimetric porcelain plate, add 3 drops of distilled water, stir well, compare the color with the standard color scale made of standard solutions of different carbon mass concentrations, and record the color Reading, carry out the determination of soil organic carbon percentage conte...

Embodiment 2

[0031] Provide a method for measuring the soil carbon sequestration effect in the rice growing season, as follows:

[0032] (1) Collect the soil to be tested before the test:

[0033] Take the sandy loam soil used in the wild northern japonica rice experiment, put it in a cultivation pot, collect soil samples according to the "diagonal" method, and randomly select 8 pots of soil to mix to obtain the soil to be tested;

[0034] (2) Collect the soil to be tested after simulating the natural growth of rice:

[0035] Get the sandy loam soil used in the northern japonica rice experiment, place the pot mouth diameter as 45cm, in the cultivation pot of 30cm high, add 70g of the soil in each pot, add 10% of the total mass to it and prepare it as raw materials with waste bark and waste branches. biochar, mixed and stirred evenly, watered into the soil and stirred evenly, and then selected healthy rice seedlings were transplanted into cultivation pots, and 6 plants were evenly planted ...

Embodiment 3

[0039] Provide a method for measuring the soil carbon sequestration effect in the rice growing season, as follows:

[0040] (1) Collect the soil to be tested before the test:

[0041] Take the loam soil from the paddy area in the coastal plain of Zhejiang, put it in a cultivation pot, collect soil samples according to the "diagonal" method, randomly select 5 pots of soil and mix them to obtain the soil to be tested;

[0042] (2) Collect the soil to be tested after simulating the natural growth of rice:

[0043] Get the loam soil in the wild Zhejiang coastal plain rice area, place the pot mouth diameter as 45cm, in the cultivation pot of height 30cm, add 60g of described soil in every pot, water and stir and mix evenly in the soil, then choose healthy rice seedlings Transplant into cultivation pots, plant 6 plants evenly in each pot, irrigate after transplanting and plow manually, other herbicides, insecticides and water management measures are the same as the local management; ...

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Abstract

The invention relates to a method for measuring the soil carbon sequestration effect in the paddy rice growth period. The method comprises the following steps: collecting soil to be detected before a test, simulating the environment after natural growth of paddy rice, collecting the soil to be detected, and measuring the organic carbon content of the soil, wherein the organic carbon content of soil is measured by a potassium dichromate-concentrated sulfuric acid oxidation method, the supernate is compared with standard color classes prepared from a standard solution, and the soil organic carbon content is calculated according to a formula: soil organic carbon percentage content= colorimetric reading number* correction coefficient. The measuring method is simple, the test results are accurate, and the research on the mechanism of soil carbon sequestration is greatly assisted by the method.

Description

technical field [0001] The invention belongs to the technical field of carbon sequestration monitoring, in particular to a method for measuring soil carbon sequestration effect in rice growing season. Background technique [0002] In order to clarify the natural potential and main pathways of soil carbon sequestration and greenhouse gas emission reduction, the study of soil carbon sequestration mechanism has become an extremely active emerging research field in agricultural soil carbon cycle research in response to climate change research in recent years. The average organic carbon density of topsoil in China is only 70%-75% of the average value of the European Union. This low soil carbon density provides a huge space for future carbon sequestration and emission reduction of agricultural soil in China, as well as the development of a sustainable agricultural production system. Developing and building resilience to climate change offers natural potential. [0003] Paddy soil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78G01N1/04C05F17/20C05G3/80
CPCC05B1/02C05D9/00C05F17/00C05G3/80G01N1/04G01N21/78C05F5/00C05F11/00C05F11/08C05D3/00C05F9/04Y02W30/40
Inventor 张玉虎赵远曹宝侯国军杨泽平孙辰鹏
Owner CAPITAL NORMAL UNIVERSITY
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