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Planting method for reducing the content of heavy metal chromium in rice

A planting method and a technology for chromium content are applied in the field of planting to reduce the content of heavy metal chromium in rice, and can solve the problems affecting the normal growth and development of rice, the decline of antioxidant enzyme activity, the fresh weight of plants, and the like, so as to reduce the content of heavy metal chromium in soil and reduce heavy metal Chromium content, the effect of accelerating absorption

Active Publication Date: 2019-11-15
江苏宝煌农业科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavy metal chromium poisoning makes rice plants short, leaves chlorotic, plant fresh weight, dry weight decrease, and antioxidant enzyme activity decreases, seriously affecting the normal growth and development of rice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A planting method for reducing rice heavy metal chromium content, comprising the following steps:

[0026] S1. Animal and plant enrichment treatment: Carry out rice seed germination and seedling raising according to conventional methods, and then plant rice seedlings in the paddy field. Three days after the rice seedlings are planted, plant cress seedlings on the edge of the paddy field near the ridge, and plant Indian mustard on the ridge For the seedlings, the cress seedlings and the Indian mustard seedlings were sprayed with a plant growth hormone every 7 days, and the trigonopsis was cultivated at the bottom of the paddy field; 12 Soak the root of the solution for 10 minutes; the method of leaching treatment is: use a stirred reactor with a volume of 200L and a stirring speed of 200r / min to carry out leaching treatment on the paddy field soil;

[0027] S2, leaching treatment: 30 days before planting seedlings, according to the mass ratio of 2.2:2.5:1.8:1 fatty acid ...

Embodiment 2

[0033] A planting method for reducing rice heavy metal chromium content, comprising the following steps:

[0034] S1. Animal and plant enrichment treatment: Carry out rice seed germination and seedling raising according to the conventional method, and then plant rice seedlings in the paddy field. Five days after the rice seedlings are planted, plant cress seedlings on the edge of the paddy field near the field ridge, and plant Indian mustard on the field ridge For the seedlings, the cress seedlings and the Indian mustard seedlings were sprayed with a plant growth hormone every 10 days, and the trigonopsis was cultivated at the bottom of the paddy field; 12 Soak its roots in the solution for 15 minutes; the method of leaching treatment is: use a stirring reactor with a volume of 200L and a stirring speed of 300r / min to carry out leaching treatment on the paddy field soil;

[0035] S2, leaching treatment: 35 days before planting seedlings, according to the mass ratio of 3.2:2.8:...

Embodiment 3

[0041] A planting method for reducing rice heavy metal chromium content, comprising the following steps:

[0042] S1. Animal and plant enrichment treatment: Carry out rice seed germination and seedling raising according to the conventional method, and then plant rice seedlings in the paddy field. 4 days after the rice seedlings are planted, plant cress seedlings on the edge of the paddy field near the field ridge, and plant Indian mustard on the field ridge For the seedlings, the cress seedlings and the Indian mustard seedlings are sprayed with a plant growth hormone every 8 days, and the trigonopsis is cultivated at the bottom of the paddy field; 12 Soak its roots in the solution for 12 minutes; the method of the leaching treatment is: use a stirred reactor with a volume of 200L and a stirring speed of 250r / min to carry out leaching treatment on the paddy field soil;

[0043] S2, leaching treatment: 32 days before planting seedlings, fatty acid methyl ester polyoxyethylene et...

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Abstract

The invention discloses a planting method for reducing the content of heavy metal chromium in paddy rice. The planting method comprises: carrying out enriching treatment on animals and plants: planting water fennel seedlings at parts, close to ridge edges, of a paddy field, planting Indian mustard seedlings on ridges and culturing hyriopsis cumingii at a water bottom; carrying out leaching treatment: before planting rice seedlings, compounding fatty methyl ester polyoxyethylene ether, fatty methyl ester ethoxylate sulfonate, sodium dodecyl benzene sulfonate and rhamnolipid, and then leaching soil of the paddy field; carrying out adsorption treatment: after planting the seedlings, preparing a chromium adsorption bag from cross-linked cationic starch chelating agent granules, strong acidic styrene cation exchange resin granules, chitosan derivative granules and active carbon granules, and adsorbing the heavy metal chromium in the soil; carrying out microorganism treatment: putting microalgae living bodies, bovine coloctrum and microorganism bacteria into water of the paddy field; carrying out water exchange management and paddy field management. By adopting the planting method provided by the invention, the content of the heavy metal chromium in each part of unhusked rice can be reduced and the content of the heavy metal chromium in the soil can also be reduced; the planting method is suitable for being applied in regions with soil polluted by the heavy metal chromium.

Description

technical field [0001] The invention relates to the technical field of rice planting, in particular to a planting method for reducing the content of heavy metal chromium in rice. Background technique [0002] With the increase of industrial "three wastes" emissions and the intensification of agricultural non-point source pollution, the problem of heavy metal chromium pollution in paddy field soil around the world is becoming more and more serious, resulting in serious problems such as soil productivity decline, agricultural product pollution and ecological environment damage, which have become obstacles to agricultural production. One of the main factors for the sustainable and efficient development of production, what is more serious is that these toxic heavy metal chromium in the soil can be absorbed by rice and accumulate in grains, and enter the human body through the food chain, thus threatening the health of urban and rural residents. The pollution of rice field soil a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/22A01C1/00A01B79/00B09C1/00B09C1/02C02F3/32C02F3/34C09K17/14C09K17/40C09K101/00C02F101/22
CPCA01B79/00A01C1/00B09C1/00B09C1/02C02F3/325C02F3/348C02F2101/22C09K17/14C09K17/40C09K2101/00Y02W10/10
Inventor 覃建兵
Owner 江苏宝煌农业科技发展有限公司
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