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A method and device for evaluating the long-term effect of acidic soil conditioner

A technology of acidic soil and improver, which is applied in measuring devices, seed immunization, instruments, etc., can solve the problems of long-term test period of acidic soil improver, etc., achieve convenient and rapid evaluation, improve experimental efficiency, and facilitate popularization and use Effect

Active Publication Date: 2022-04-26
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still limitations such as a long test period for the evaluation of the long-term effect of acidic soil amendments

Method used

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  • A method and device for evaluating the long-term effect of acidic soil conditioner
  • A method and device for evaluating the long-term effect of acidic soil conditioner
  • A method and device for evaluating the long-term effect of acidic soil conditioner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A method for evaluating the long-term effect of acidic soil improver, by calculating the annual input acid amount, configuring simulated acid solution, reacting the simulated acid solution with the soil sample improved by the improver, and measuring the pH value and Al of the product after the reaction content, calculate the relative long-acting index R according to the washing volume, pH value, and Al content, which is used to evaluate the long-acting effect of different modifiers, specifically including the following steps:

[0050] S1-1. Soil preparation after improvement: Take appropriate amount of amendment and Ca(OH) 2 , respectively mixed with the same acidic soil, so that the pH of the improved soil is close to 5.5, and the soil water content is adjusted to 20% with deionized water, cultivated at 25°C for 15 days, and replenishing water every 3 days. After the cultivation, the The improved soil samples were ground and passed through a 0.25mm sieve for later use;...

Embodiment 2

[0056] In this embodiment, on the basis of Example 1, by carrying out root elongation experiments on soil samples improved by different acidic soil improvers, the long-term effect of different acidic soil improvers is further studied, which specifically includes the following steps:

[0057] S2-1. Simulated acid rain: Add the simulated acid solution to the soil samples improved by different acidic soil amendments to simulate the acid rain leaching process. The soil samples improved by each acidic soil amendment are regarded as a group. The types of acidic soil amendments are grouped correspondingly, and the root elongation experiment operation of soil samples improved by each group of acidic soil amendments is the same: according to the annual rainfall of 7.5ml per gram of soil, 8.0g of soil improvement samples are added to 500ml Then add 300ml of simulated acid solution to simulate the leaching process for 5 years, repeat the rinsing-drying cycle for 2, 3, and 4 times respecti...

Embodiment 3

[0063] The present embodiment is based on the method of embodiment 2, and provides a kind of device that utilizes above-mentioned method to evaluate the long-acting effect of acidic soil amendment, including acid bottle 1, peristaltic pump 2 and comprehensive simulation box 3;

[0064] The acid bottle 1 is connected with the liquid inlet end of the reaction pool 4 located in the upper part of the comprehensive simulation box 3 through the acid tube 11, the peristaltic pump 2 is located in the middle of the acid tube 11, and the middle part of the comprehensive simulation box 3 is provided with a dividing plate 31. A slidable placement platform 32 is provided above the plate 31, and the bottom of the placement platform 32 is slidably connected with the partition plate 31 through a set of damping slide rails 36. The reaction pool 4 is fixed on one side of the upper surface of the placement platform 32, and the other side of the upper surface of the placement platform 32. There ar...

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Abstract

The invention discloses a method and device for evaluating the long-term effect of an acidic soil improver. The method comprises the following steps: S1-1 soil preparation after improvement, S1-2 leaching reaction, and then according to the pH value and Al content obtains total acid solution rinsing amount, calculates relative long-acting index R=(V m / (M 0 -M)+V n / N) / (V k / (L 0 -M)+V l / N). The device includes an acid bottle, a peristaltic pump and a comprehensive simulation box. A partition is arranged in the middle of the comprehensive simulation box, and a placement platform is arranged above the partition. The plate is placed, and the liquid outlet end of the reaction pool is provided with a hose, which runs through the storage box and is connected to the recovery mechanism. The present invention evaluates the long-term effectiveness of the soil improver by using a short-term indoor simulation experiment method to obtain the effective life of the improver after application. The test method is scientific and reasonable, the structure of the whole device is reasonable, and the operation is convenient and quick.

Description

technical field [0001] The invention relates to the technical field of soil conditioning, in particular to a method and device for evaluating the long-acting properties of an acidic soil conditioner. Background technique [0002] Nowadays, with the rapid development of urban economy and rapid population expansion, the demand for high-quality soil is extremely urgent. At present, about 226 million mu of acidic soil is distributed in my country, and its acid damage and aluminum poisoning seriously endanger the growth of crops. Aiming at the limiting factors of acidic soil, many types of acidic soil amendments have been developed at home and abroad to improve the productivity of acidic soil. However, in the process of industrial and agricultural production, due to acid deposition and excessive application of ammonium nitrogen fertilizers caused by a large amount of N and S atmospheric emissions, acidic substances will re-enter the soil, consume the active ingredients in the am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00A01C1/02A01C1/08
CPCG01N33/00A01C1/08A01C1/02
Inventor 时仁勇倪妮姜军来宏伟李九玉徐仁扣崔秀敏
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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