Soil conditioner and application thereof in modifying organic agricultural acidic soil

A soil conditioner and organic technology, which is applied to the soil conditioner and its application in the improvement of acidic soil in organic agriculture, can solve the problems of environmental pollution of waste, low grade of attapulgite, and high cost of impurity removal, and achieves alleviation of organic pollution. Effects of agricultural soil acidification

Pending Publication Date: 2019-05-03
临泽县鼎丰源凹土高新技术开发有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the attapulgite in Gansu has a low grade and high impurity content. If it is used as a raw material for the manufacture of new materials, the cost of impurity removal is high, and the waste generated will pollute the environment.

Method used

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  • Soil conditioner and application thereof in modifying organic agricultural acidic soil
  • Soil conditioner and application thereof in modifying organic agricultural acidic soil
  • Soil conditioner and application thereof in modifying organic agricultural acidic soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Determination of the basic properties of attapulgite:

[0018] The basic properties of attapulgite are mainly characterized and determined by acid-base titration curve. The specific operation steps are: Weigh 0.5000g of attapulgite that has been passed through a 0.149mm sieve in a natural air-dried state into a 100ml plastic bottle, and add different volumes of 0.04M HNO 3 (0-50ml) and the corresponding amount of deionized water to make the solution volume 50ml. After tightening the bottle cap, shake at 200rpm and 25°C for 7d. After the reaction, the pH value of the suspension system was measured with a composite pH electrode. Compare the measured pH with the corresponding consumption of 0.04 MHNO 3 The volume of the curve is the acid-base titration curve, see figure 1 .

[0019] Depend on figure 1 It can be seen that the acid-base titration curve of attapulgite is similar to the curve when a strongly basic substance is titrated by a strong acid. Attapulgite's st...

Embodiment 2

[0021] Improvement effect of attapulgite on acidic soil:

[0022] The operation steps of the cultivation test of attapulgite improving acidic soil are as follows: 600g of air-dried soil (2mm sieve) and attapulgite (0.149mm sieve) are mixed evenly and put into a plastic cup. The addition level of attapulgite is 0g / kg (0%) as a control, 20g / kg (2%), 40g / kg (4%), 60g / kg (6%), 80g / kg (8%) and 100g / kg (10%). Adding deionized water to 70% of the field water capacity was used for indoor soil cultivation experiments. Plastic cups are sealed with plastic wrap, and a small hole is left in the middle of the plastic wrap to allow gas exchange and reduce water loss. The plastic cups were cultured in a constant temperature incubator at 25°C, and weighed every 3 days and supplemented with water to keep the soil moisture content constant. At the 0th, 30th, 90th, 150th, 240th and 360th day after the start of the culture experiment, soil samples were taken and air-dried to measure soil pH an...

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Abstract

The invention discloses a soil conditioner. The soil conditioner is natural clay mineral attapulgite. The invention also provides an application of the soil conditioner in modifying organic agricultural acidic soil. The efficient acidic-soil conditioner provided by the invention has the beneficial effects that the organic agriculture acidic soil can be effectively modified, and the application isan effective measure for relieving acidification of the organic agricultural soil in acidic soil regions.

Description

technical field [0001] The invention relates to the technical field of agricultural soil regulation, in particular to a soil conditioner and its application in acidic soil improvement in organic agriculture. Background technique [0002] There is a large area of ​​acidic soil distributed in our country. Due to the unreasonable application of chemical fertilizers, the acidification of the soil is gradually increasing. Soil acidification is an important aspect of soil degradation, which seriously restricts the sustainable development of agriculture in acid soil areas in tropical and subtropical regions of my country. Soil acidification will aggravate the toxic effect of active aluminum on plants and lead to the deficiency of base ions, thereby reducing the cation exchange capacity (CEC) and base saturation (BS) of the soil, resulting in the degradation of soil fertility. The research and development of high-efficiency acidic soil amendments is a priority problem to be solved ...

Claims

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Application Information

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IPC IPC(8): C09K17/02C09K109/00
Inventor 李建国袁金华俄胜哲
Owner 临泽县鼎丰源凹土高新技术开发有限公司
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