A base fertilizer additive for controlling lead pollution in cotton field soil, base fertilizer and its preparation method and application

A technology of lead pollution and base fertilizer, applied in application, potassium fertilizer, nitrogen fertilizer, etc., can solve the problems of inapplicability of cotton fields and other crop fields, difficulties in subsequent use of plants, and inability to remove heavy metals, so as to increase crop growth speed and resist Pb heavy metals The effect of accumulating, reducing the content of lead

Active Publication Date: 2021-07-02
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the added improver is dispersed in the soil, which cannot completely remove heavy metals from the soil, resulting in the hidden danger of soil pollution again. Moreover, the main raw material of this method comes from mining operations, which requires high temperature and is not conducive to environmental protection.
Although the method of planting non-economic crops in the prior art relies on plant enrichment of heavy metals to reduce the content of heavy metals in the soil and improve the soil, the subsequent use of plants is difficult due to the enrichment of heavy metals in the plants themselves, which is harmful to cotton fields and other crops. farmland not applicable

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  • A base fertilizer additive for controlling lead pollution in cotton field soil, base fertilizer and its preparation method and application
  • A base fertilizer additive for controlling lead pollution in cotton field soil, base fertilizer and its preparation method and application

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preparation example Construction

[0024] The preparation method of the cotton stalk decomposing liquid comprises the following steps: extracting the cotton stalks with the extracting liquid, and sieving to obtain the cotton straw decomposing liquid; the extracting liquid has a mass concentration of 3%-6% An aqueous solution of ammonium nitrate, potassium dihydrogen phosphate with a mass concentration of 2-3%, naphthaleneacetic acid with a mass concentration of 0.004%-0.006%, and N,N-dimethylsuccinic acid with a mass concentration of 0.01%-0.02%;

[0025] The preparation method of the active potassium silicate mixed solution comprises the following steps: mixing and stirring a potassium silicate solution with a Baume degree of 40 and a sodium citrate solution with a mass concentration of 5% in a mass ratio of 10:1 to obtain active silicic acid Potassium mixture.

[0026]The base fertilizer additive provided by the invention includes cotton straw decomposing liquid. In terms of parts by mass, the cotton straw d...

Embodiment 1

[0044] 1. The preparation method of cotton straw decomposition liquid is as follows:

[0045] In October 2015, 8,000 kg of cotton stalks were collected and dried, and the moisture content was controlled within 8%. They were cut into 30cm segments with a wood cutting machine, and the cut cotton stalks were scattered and thrown into the cement pool (length × width × height: 2m × 3m×1.5m), each cement pool is filled with about 8cm of water 3 , so that the water completely submerges the cotton stalks, and the water surface can be pressed with a certain weight to keep the stalks submerged; at the same time, add 400 kg of ammonium nitrate, 160 kg of potassium dihydrogen phosphate, 0.4 kg of naphthaleneacetic acid, and 0.8 kg of B9 reagent to the cement pool, and seal them up. After 30 days, the initial product of cotton straw decomposing liquid was obtained, and the initial product was graded and filtered to finally obtain a cotton straw decomposing liquid of about 8 cm without turb...

Embodiment 2

[0048] Mix the cotton straw decomposing liquid prepared in Example 1, potassium nitrate, polyethyleneimine, trichodermacidin dispersion and the active potassium silicate mixture prepared in Example 1 according to the ratio of 300g: 15g: 3g: 100g: 10g The mixing sequence is as follows: slowly add potassium nitrate crystals to the cotton straw decomposing liquid, and mix well until the potassium nitrate is dissolved, then add polyethyleneimine to obtain a uniform mixed solution; then add trichodermain dispersion liquid, After fully mixing the active potassium silicate mixed solution, the obtained mixed solution is filtered under reduced pressure, and finally a weak base regulator is added to adjust the pH value to 7.0 to obtain a base fertilizer additive.

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Abstract

The invention provides a base fertilizer additive for controlling lead pollution in cotton field soil, a base fertilizer and a preparation method and application thereof, belonging to the technical field of soil improvement. The base fertilizer additive provided by the present invention comprises the following components in parts by weight: 280-320 parts of cotton straw decomposition liquid, 12-17 parts of potassium nitrate, 2-4 parts of polyethyleneimine, and 80-120 parts of trichodermacidin dispersion liquid and 8-12 parts of active potassium silicate mixed solution; the pH value of the base fertilizer additive is 7.0-8.0. The base fertilizer adjuvant provided by the invention reduces the dose of heavy metals in the soil, so as to ensure normal field cotton planting and effectively resist the accumulation of heavy metals in planted crops to achieve normal harmlessness, thereby achieving governance and purpose of repair.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a base fertilizer additive for controlling lead pollution in cotton field soil, a base fertilizer and a preparation method and application thereof. Background technique [0002] In the process of my country's industrialization\urbanization, due to insufficient control of early industrial activities and production, or too many unreasonable agricultural processes, a large amount of waste products, waste and exhaust gas entered the living environment and agricultural environment, resulting in today's Heavy metal pollution in some farmland soils in my country exceeds the standard. According to the data, heavy metals in polluted soil mainly include elements such as lead (Pb), cadmium (Cd), chromium (Cr), nickel (Ni) and similar metallic arsenic (As), and the pollution source mainly comes from the discharge of factory waste water and waste gas , Residues of pestici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00C05G3/80
CPCC05B7/00C05G3/80C05G5/20C05C1/00C05C5/02C05D1/00C05F11/00C05F11/08C05F11/10C05G3/00
Inventor 王国平熊世武李亚兵李存东韩迎春冯璐雷亚平杨北方王占彪李小飞邢芳范正义辛明华
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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