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Cadmium control agent for leaves of Chinese cabbage and its preparation method and application
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A cadmium control agent and Chinese cabbage technology, which is applied in application, fertilizer mixture, fertilization device, etc., can solve the problems of reducing cadmium accumulation, heavy metal cadmium pollution reduction or limited effect, so as to reduce cadmium content and accumulation, obtain Ease of use and effective results
Active Publication Date: 2015-08-19
HUAZHONG AGRI UNIV
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Summary
Abstract
Description
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Problems solved by technology
Most of the existing research is the method of applying a certain trace element alone, which has a limited range or effect on the reduction of heavy metal cadmium pollution in crops. It is possible to reduce cadmium in crops and vegetables more significantly through the combined application of two or more trace elements. Provide a new idea for the safe utilization of heavy metal lightly polluted soil
Method used
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Examples
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Effect test
example 1
[0036] 1. Example 1: Pakchoy varieties with high accumulation of cadmium
[0037] 1) Soil
[0038] The soil is naturally air-dried, ground and sieved, and then put into plastic pots. Each pot is filled with 2.5kg of soil, and CdCl is added at 2.0mgCd / kg of soil. 2 2.5H 2 O (analytical pure) solution, balance for half a month, keep it moist during the period; then three days before sowing, use urea, potassium dihydrogen phosphate and potassium chloride as fertilizer sources, and apply N: 0.2g per kilogram of soil, P 2 o 5 : 0.15g, K 2 O: 0.2g.
[0039] 2) Potted plants
[0040] ①The pakchoi were sown on March 17, 2010 according to the varieties with high cadmium accumulation;
[0041] ② 20 days after emergence, use the cadmium control agent for foliar spraying, which requires the cadmium control agent to be clarified without precipitation; in addition, deionized water, 0.1% boric acid, and 0.2% silicic acid are used as controls for foliar spraying to compare the cadmium ...
example 2
[0051] 2. Example 2: Pakchoy varieties with low cadmium accumulation
[0052] 1) Soil
[0053] The soil is naturally air-dried, ground and sieved, and then put into plastic pots. Each pot is filled with 2.5kg of soil, and CdCl is added at 2.0mgCd / kg of soil. 2 2.5H 2 O (analytical pure) solution, balance for half a month, keep it moist during the period; then three days before sowing, use urea, potassium dihydrogen phosphate and potassium chloride as fertilizer sources, and apply N: 0.2g per kilogram of soil, P 2 o 5 : 0.15g, K 2 O: 0.2 g.
[0054] 2) Potted plants
[0055] ①The pakchoi were planted on March 17, 2010 as varieties with low cadmium accumulation;
[0056] ② 20 days after emergence, use this cadmium control agent for foliar spraying, which requires the cadmium control agent to be clarified without precipitation;
[0057] In addition, foliage spraying with deionized water was used as a control test;
[0058] Each spraying time should be carried out at 5 o'...
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Abstract
The invention discloses a Chinese cabbage leaf surface cadmium control agent as well as a preparation method and an application thereof, and relates to a plant cadmium control agent. The cadmium control agent comprises the following components in percentage by mass: 0.1-0.2 percent of boric acid, 0.2-0.4 percent of sodium silicate and 99.4-99.7 percent of water, wherein the summation of the percentage of all the components is 100%; the boric acid and the sodium silicate are both an analytically pure or chemically pure reagent; the water is distilled water or tap water; and the cadmium control agent can be prepared by just mixing and dissolving the components. The application of the cadmium control agent is as follows: (1) the components of the cadmium control agent are accordingly dissolved to ensure the cadmium control agent to be clear and free of precipitates; (2) the cadmium control agent is sprayed in afternoon of a sunny day without wind; and (3) the cadmium control agent is sprayed on the front surfaces and the rear surfaces of Chinese cabbage leaves in a manner that the stems and the leaves are wetted but no water drops. The cadmium control agent is simple, convenient and easy to obtain and obvious in effect, and has the advantages of remarkably reducing the content and accumulation amount of the cadmium in a plant body, remarkably reducing the content and accumulation amount of the cadmium in the Chinese cabbage relative to boron and silicon which are sprayed independently and causing no secondary pollution to environment.
Description
technical field [0001] The invention relates to a plant cadmium control agent, in particular to a pakchoi leaf surface cadmium control agent and a preparation method and application thereof. Background technique [0002] With the improvement of people's living standards, the quality and safety of agricultural products has been paid more and more attention by people. During the normal growth of plants, although the demand for trace elements is very small, their role cannot be ignored. The medium elements necessary for plants are calcium, magnesium, and sulfur, the trace elements are iron, boron, manganese, copper, zinc, molybdenum, and chlorine, the macroelements are nitrogen, phosphorus, and potassium, and beneficial elements are silicon. Plant nutrient elements participate in plant metabolism through biochemical action, thereby affecting plant growth and quality (Reference-1, Tang Lu et al., 2008); many previous research results have shown that medium and trace element fer...
Claims
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Application Information
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