Cadmium inhibiting rice nutritional agent as well as preparation method and application method thereof

Abstract

A cadmium inhibiting rice nutritional agent comprises 6%-10% of selenium yeast, 10%-25% of calcium amino acid, 50%-60% of No.1 mother liquor, 4%-12% of sodium silicate and 2%-5% of sodium bicarbonate. The invention provides a preparation method and an application method of the cadmium inhibiting rice nutritional agent. The cadmium inhibiting rice nutritional agent as well as the preparation method and the application method thereof has the benefits as follows: firstly, the cadmium content in rice is effectively reduced by about 40%; secondly, the operation simple and convenient, and the cost is low and is about 60 yuan per mu; and thirdly, the selenium content in rice seeds can be increased, and the nutritional agent is beneficial to health.

Description

technical field

[0001] The invention belongs to the field of agricultural environmental protection, and more specifically relates to a nutrient that can effectively reduce the cadmium content in rice fields with cadmium exceeding the standard, and a method for preparing and using a nutrient that suppresses the cadmium content in rice fields with excessive cadmium. The invention relates to rice production in areas polluted by heavy metals, especially in areas polluted by medium and light cadmium, that is, a cadmium-inhibiting nutrient for rice and methods for preparing and using the same. Background technique

[0002] "Cadmium rice" is the rice whose inherent "cadmium" content seriously exceeds the standard due to environmental pollution. There are a large number of people who consume rice in our country, and the trend of grain circulation will inevitably lead to an increase in the number of people who consume "cadmium rice".

[0003] In 2002, the Rice and Product Quality Su...

Examples

specific Embodiment 1

[0027] A cadmium-inhibiting nutrient for rice, its composition by mass percentage includes:

[0028]

specific Embodiment 2

[0029] A preparation method of a cadmium-inhibiting nutritional agent for rice, comprising the steps of:

[0030] 1) heat treatment: heat treatment of saccharification enzyme industrial fermentation waste liquid;

[0031] 2) Filtration: filtering the liquid treated in step 1) to obtain the 1# mother liquor;

[0032] 3) Mixing: 60% of the 1# mother liquor is uniformly mixed with 8% of the yeast selenium, 8% of the sodium silicate, and 20% of the amino acid calcium to obtain the 2# mother liquor;

[0033] 4) pH adjustment: add 4% of the sodium bicarbonate to the 2# mother liquor, adjust the pH value of the 2# mother liquor to 7.5, and obtain the 3# mother liquor;

[0034] 5) Sterilization: Sterilize the 3# mother liquor to obtain the cadmium-inhibiting nutrient for rice.

specific Embodiment 3

[0035] Yiyang Heshan rice planting professional cooperative production test, a method of using a cadmium-inhibiting nutrient for rice:

[0036] 1) Spraying period: Spray 3 times on the leaves during the whole growth period of rice, and spray 60 kg of cadmium-inhibiting nutrient solution per mu each time. Foliar spraying is carried out at the tillering stage of rice, and the third spraying is carried out at the heading stage;

[0037] 2) Dilution of cadmium-inhibiting nutrient: take 6 kg of rice cadmium-inhibiting nutrient and add water to dilute 5 times;

[0038] 3) Spraying method: choose sunny or cloudy days, avoid dew and fine mist for foliar spraying, evenly spray on the back of the leaves, and the surface of the leaves, subject to the fact that no droplets drip when spraying wet.

technical field

[0001] The invention belongs to the field of agricultural environmental protection, and more specifically relates to a nutrient that can effectively reduce the cadmium content in rice fields with cadmium exceeding the standard, and a method for preparing and using a nutrient that suppresses the cadmium content in rice fields with excessive cadmium. The invention relates to rice production in areas polluted by heavy metals, especially in areas polluted by medium and light cadmium, that is, a cadmium-inhibiting nutrient for rice and methods for preparing and using the same. Background technique

[0002] "Cadmium rice" is the rice whose inherent "cadmium" content seriously exceeds the standard due to environmental pollution. There are a large number of people who consume rice in our country, and the trend of grain circulation will inevitably lead to an increase in the number of people who consume "cadmium rice".

[0003] In 2002, the Rice and Product Quality Su...

Examples

specific Embodiment 1

[0027] A cadmium-inhibiting nutrient for rice, its composition by mass percentage includes:

[0028]

specific Embodiment 2

[0029] A preparation method of a cadmium-inhibiting nutritional agent for rice, comprising the steps of:

[0030] 1) heat treatment: heat treatment of saccharification enzyme industrial fermentation waste liquid;

[0031] 2) Filtration: filtering the liquid treated in step 1) to obtain the 1# mother liquor;

[0032] 3) Mixing: 60% of the 1# mother liquor is uniformly mixed with 8% of the yeast selenium, 8% of the sodium silicate, and 20% of the amino acid calcium to obtain the 2# mother liquor;

[0033] 4) pH adjustment: add 4% of the sodium bicarbonate to the 2# mother liquor, adjust the pH value of the 2# mother liquor to 7.5, and obtain the 3# mother liquor;

[0034] 5) Sterilization: Sterilize the 3# mother liquor to obtain the cadmium-inhibiting nutrient for rice.

specific Embodiment 3

[0035] Yiyang Heshan rice planting professional cooperative production test, a method of using a cadmium-inhibiting nutrient for rice:

[0036] 1) Spraying period: Spray 3 times on the leaves during the whole growth period of rice, and spray 60 kg of cadmium-inhibiting nutrient solution per mu each time. Foliar spraying is carried out at the tillering stage of rice, and the third spraying is carried out at the heading stage;

[0037] 2) Dilution of cadmium-inhibiting nutrient: take 6 kg of rice cadmium-inhibiting nutrient and add water to dilute 5 times;

[0038] 3) Spraying method: choose sunny or cloudy days, avoid dew and fine mist for foliar spraying, evenly spray on the back of the leaves, and the surface of the leaves, subject to the fact that no droplets drip when spraying wet.

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