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Method for evidently lowering cadmium accumulation of Raphanus sativus and promoting growth of Raphanus sativus

A radish cadmium-remarkable technology, applied in the field of significantly reducing the accumulation of radish cadmium and promoting its growth, can solve the problems of lack of universality and complicated screening process of suitable hormones, and achieve the reduction of cadmium content, alleviation of inhibition, and improvement of photosynthetic pigments. The effect of content

Inactive Publication Date: 2017-10-24
SICHUAN AGRI UNIV
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Problems solved by technology

[0003] At present, in the research field of reducing cadmium content in vegetable crops, the application of exogenous hormones is one of the main means. However, due to the different sensitivity of different crops to different hormones, the screening process for suitable hormones is more complicated, and the research conclusions obtained are inconsistent. universal
At present, there are few studies on the reduction of cadmium in radish. At the same time, there are few in-depth studies on the reduction of cadmium and the inhibition of cadmium on radish.

Method used

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  • Method for evidently lowering cadmium accumulation of Raphanus sativus and promoting growth of Raphanus sativus
  • Method for evidently lowering cadmium accumulation of Raphanus sativus and promoting growth of Raphanus sativus
  • Method for evidently lowering cadmium accumulation of Raphanus sativus and promoting growth of Raphanus sativus

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Embodiment 1

[0017] 1 Materials and methods

[0018] 1.1 Test material

[0019] The local specialty radish variety 'Manshenhong' in Sichuan was used as the test material, which was purchased from Chengdu Jinbaisheng Seed Industry Co., Ltd. The soil for testing is sandy loam, which is taken from the farmland of Wenjiang District, Chengdu. Its basic physical and chemical properties are: pH 7.09, total nitrogen 1.50g kg -1 , total phosphorus 0.76g·kg -1 , total potassium 18.02g·kg -1 , total cadmium 1.96mg·kg -1 , Alkaline hydrolyzed nitrogen 94.82mg·kg -1 , available phosphorus 6.30mg·kg -1 , available potassium 149.59mg·kg -1 , and the background effective cadmium content in the tested soil was not detected.

[0020] 1.2 Experimental design

[0021] Pass the air-dried test soil through a 6.72mm (3 mesh) sieve and put it into pots, with 2.0kg of soil in each pot, and use the concentration of CdCl 2 2.5H 2 O analytically pure form Add heavy metal cadmium and mix well to make the soi...

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Abstract

The invention provides a method for evidently lowering the cadmium accumulation of Raphanus sativus and promoting the growth of the Raphanus sativus. The method includes: when Raphanus sativus seedlings grow two true leaves, using melatonin with the concentration being 50-200 micromol*L<-1> to perform leaf surface spraying until leaf surfaces can drip water. The method has the advantages that cadmium content in the Raphanus sativus can be lowered evidently, the photosynthetic pigment content, antioxidant enzyme activity and biomass of the Raphanus sativus can be increased evidently, and the inhibition effect of cadmium on the growth of the Raphanus sativus can be relieved effectively.

Description

technical field [0001] The invention belongs to the technical field of vegetable planting, and in particular relates to a method for significantly reducing the accumulation of cadmium in radish and promoting its growth. Background technique [0002] In recent years, due to the rapid development of industrial and agricultural production and the massive development and utilization of mineral resources, the problem of heavy metal pollution in farmland soil-crop systems has become more and more prominent, which also poses a serious threat to agricultural product safety and food safety. Cadmium is one of the most concerned toxic heavy metals in the environment. Its toxicity is second only to mercury and lead, ranking third. It affects the yield and quality of crops through absorption, accumulation and enrichment of plants. human health. One of the important ways for soil cadmium to accumulate is atmospheric deposition. Cadmium in the atmosphere enters the soil through natural de...

Claims

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Application Information

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IPC IPC(8): A01G7/06
CPCA01G7/06
Inventor 唐懿李焕秀李晓梅林立金廖明安孙国超谢永东谭华强
Owner SICHUAN AGRI UNIV
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