Leaf surface fertilizer for reducing cadmium content in rice and preparing method of leaf surface fertilizer

A foliar fertilizer and rice technology, applied in fertilization methods, phosphate fertilizers, fertilization devices, etc., can solve the problems of poor cadmium reduction effect, high cost, and large dosage

Inactive Publication Date: 2018-03-30
AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the prior art are: the existing cadmium reduction metho

Method used

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  • Leaf surface fertilizer for reducing cadmium content in rice and preparing method of leaf surface fertilizer
  • Leaf surface fertilizer for reducing cadmium content in rice and preparing method of leaf surface fertilizer

Examples

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preparation example Construction

[0021] Such as figure 1 Shown, the preparation method of the foliage fertilizer that reduces cadmium content in the rice provided by the embodiment of the present invention comprises:

[0022] S101: Weigh KH 2 PO 4 0.02mol / L~0.04mol / L, zinc chloride 0.02mol / L~0.03mol / L, manganese sulfate 0.1mol / L~0.2mol / L and malic acid 0.2mol / L~0.3mol / L;

[0023] S102: Add 1 L of distilled water, shake and dissolve.

[0024] The method of using the foliar fertilizer for reducing the cadmium content in rice provided by the embodiments of the present invention is as follows: at the earing and flowering stage of rice, according to the dosage of 500mL / mu, take KH 2 PO 4 0.02mol / L~0.04mol / L, zinc chloride 0.02mol / L~0.03mol / L, manganese sulfate 0.1mol / L~0.2mol / L and malic acid 0.2mol / L~0.3mol / L were diluted with water to 30L, evenly sprayed on the surface of rice leaves;

Embodiment 1

[0027] The foliar fertilizer that reduces the cadmium content in the rice that the embodiment of the present invention provides is by KH 2 PO 4 0.02mol / L, zinc chloride 0.02mol / L, manganese sulfate 0.2mol / L and malic acid 0.2mol / L.

[0028] The preparation method of the foliar fertilizer that reduces the cadmium content in the rice that the embodiment of the present invention provides comprises:

[0029] Step 1, weigh KH 2 PO 4 0.02mol / L, zinc chloride 0.02mol / L, manganese sulfate 0.2mol / L and malic acid 0.2mol / L;

[0030] Step 2, add 1L of distilled water, shake and dissolve.

Embodiment 2

[0032] The foliar fertilizer that reduces the cadmium content in the rice that the embodiment of the present invention provides is by KH 2 PO 4 0.04mol / L, zinc chloride 0.03mol / L, manganese sulfate 0.1mol / L and malic acid 0.3mol / L.

[0033] The preparation method of the foliar fertilizer that reduces the cadmium content in the rice that the embodiment of the present invention provides comprises:

[0034] Step 1, weigh KH 2 PO 4 0.04mol / L, zinc chloride 0.03mol / L, manganese sulfate 0.1mol / L and malic acid 0.3mol / L;

[0035] Step 2, add 1L of distilled water, shake and dissolve.

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PUM

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Abstract

The invention belongs to the technical field of agricultural fertilizer application, and discloses a leaf surface fertilizer for reducing the cadmium content in rice and a preparing method of the leafsurface fertilizer. The leaf surface fertilizer for reducing the cadmium content in rice is composed of KH2PO4 with the concentration of 0.02-0.04 mol/L, zinc chloride with the concentration of 0.02-0.03 mol/L, manganese sulfate with the concentration of 0.1-0.2 mol/L and malic acid with the concentration of 0.2-0.3 mol/L. The preparing method includes the steps of weighing 0.0323 mol of KH2PO4,0.0266 mol of zinc chloride, 0.175 mol of manganese sulfate and 0.2669 mol of malic acid, adding 1 L of distilled water, and conducting vibrating and dissolving. According to the leaf surface fertilizer, by spraying a small-molecular acid type component (malic acid) on rice leaves, the endocrine metabolism adjusting and control approach of rice plants is adjusted and controlled, the plants are induced to secrete plant chelating elements capable of preventing heavy metal cadmium ion from being conveyed to grain, and the effect of the cadmium content in rice is reduced.

Description

technical field [0001] The invention belongs to agricultural fertilization technology, in particular to a foliar fertilizer for reducing cadmium content in rice and a preparation method thereof. Background technique [0002] In recent years, the deterioration of the environmental quality of cultivated land in my country and the phenomenon of excessive harmful substances in agricultural products have been paid more and more attention. Due to heavy metal pollution, the heavy metal content in agricultural products, especially rice cadmium, has exceeded the standard, which has aroused widespread concern from all walks of life. In order to reduce the cadmium content in rice, various methods have been developed. For example, adding quicklime to the soil, lowering the soil pH can passivate the soil cadmium to a certain extent, and achieve the purpose of reducing the transfer of cadmium to rice. Some people have also developed a method of adding porous adsorbents to the soil to ads...

Claims

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Application Information

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IPC IPC(8): C05G3/00A01C21/00A01G22/22
CPCA01C21/00C05B7/00C05G3/00C05G5/23C05D9/02Y02P60/21
Inventor 刘仲齐张长波黄永春
Owner AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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