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Leaf surface resistance control agent and preparation method and applications thereof

A kind of inhibitor and foliar technology

Inactive Publication Date: 2019-07-05
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

[0008] Rice husk is a common agricultural waste. Our country produces about 40 million tons of rice husk every year. Bio-oil is produced by cracking rice husk in an industrial fixed bed. After further processing and purification, it becomes a good biofuel. At the same time A large amount of rice husk charcoal is also produced in this process. If the rice husk charcoal is not further processed, most of it can only be disposed of as waste, occupying land and causing environmental problems such as dust.

Method used

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  • Leaf surface resistance control agent and preparation method and applications thereof
  • Leaf surface resistance control agent and preparation method and applications thereof
  • Leaf surface resistance control agent and preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Select the waste rice husk charcoal from the industrial fixed bed pyrolysis rice husk to produce bio-oil as raw material for crushing and grinding, after passing through a 100-mesh sieve, put it into a polytetrafluoroethylene container equipped with a constant temperature magnetic stirring device in sequence for each liter of water 200g of waste rice husk charcoal and 30g of potassium hydroxide passed through a 100-mesh sieve, and then turn on the constant temperature stirring device to stir evenly, control the stirring time for 50-60min, the stirring speed of 350-400rpm and the temperature of the reaction device at 80-90°C, and finally pass through the suction filtration The device passes through a 0.45μm PES material filter membrane, and the filtrate is used as a foliar inhibitor for reducing cadmium content in brown rice. After the preparation is completed, it is measured by silicon molybdenum yellow spectrophotometry and atomic absorption spectrophotometry that each ...

experiment example 2

[0028] Experimental example 2: Screening for the optimal dilution ratio

[0029] Pot experiments were used to preliminarily investigate the effect of the volume ratio of dilution of the stock solution of the foliar inhibitor control agent of the present invention with surfactants on the effect of reducing the cadmium content of rice in polluted soil, in order to screen out the best dilution ratio.

[0030]The pot experiment was set up in the Wimbledon Room of the Red Soil Ecological Experiment Station of the Chinese Academy of Sciences in Yingtan City, Jiangxi Province. The soil used in the test is a paddy soil with excessive cadmium, and the basic physical and chemical properties of the soil are shown in Table 1. According to the Chinese Soil Environmental Quality Standard (GB 15618-2018), the cadmium content in the soil is between the farmland soil cadmium risk screening value and the control value, which belongs to the mild soil cadmium pollution, and more than 80% of the d...

experiment example 3

[0044] Experimental example 3: Application of potted plants

[0045] A potted method was used to preliminarily investigate the effect of the present invention on reducing cadmium in rice on polluted soil. The pH of the tested soil was 4.45, the organic matter was 29.5g / kg, the total cadmium was 0.78mg / kg, and the available cadmium was 0.17mg / kg.

[0046] Five treatments were set up in the pot experiment: (1) Control: no treatment was applied, and a certain amount of water (A) was sprayed; (2) Treatment 1: organosilicon reagent (positive Ethyl silicate) (B); (3) Treatment 2: Spraying Tubacon product (C) of the same quality (referring to elemental silicon); (4) Treatment 3: Spraying the same quality (referring to elemental silicon) (5) Treatment 4: Spray the foliage inhibitor dilution (E) of the same quality (referring to elemental silicon) and dilute 285 times with surfactant.

[0047] Before the pot experiment, the same seedling raising method in Experimental Example 2 was u...

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Abstract

The invention discloses a leaf surface resistance control agent and a preparation method and applications thereof. The effective component of the leaf surface resistance control agent comprises a mainfunctional component namely water soluble silicon and water soluble potassium that assists the growth of crops. For each liter of stock solution of the leaf surface resistance control agent, there are 15 to 25 grams of water soluble silicon and 20 to 30 grams of water soluble potassium, and the pH of the stock solution of the resistance control agent is 10.5 to 11.5. The provided leaf surface resistance control agent can reduce cadmium pollution of paddy rice, is capable of increasing the paddy rice output, and can be used to control the heavy metal pollution of agricultural products such aspaddy rice.

Description

technical field [0001] The invention belongs to the technical field of prevention and control of heavy metal pollution of agricultural products, and in particular relates to a foliar resistance control agent and its preparation method and application. Background technique [0002] In recent years, heavy metal pollution in farmland soil in my country has become more and more serious. In April 2014, the Ministry of Environmental Protection and the Ministry of Land and Resources issued a national soil pollution survey bulletin, pointing out that the rate of farmland location exceeding the standard reached 19.4%, and the primary pollutant was heavy metal cadmium, which exceeded the standard by 7%. . [0003] Cadmium is a non-essential element for organisms, and it is considered as the most toxic heavy metal due to its high mobility, high toxicity, high accumulation and refractory property. After the heavy metal cadmium enters the soil, due to its high biological activity, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/00A01P21/00A01G7/06
CPCA01G7/06A01N59/00
Inventor 周静刘海龙吴天一夏睿智
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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