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Method for reducing overground part heavy metal cadmium accumulation of rosaceae fruit tree rootstock

A technique for aerial parts and Rosaceae, applied in the field of reducing the accumulation of heavy metal cadmium in the aerial parts of Rosaceae fruit tree rootstocks, can solve the problems affecting the cadmium content of fruits, the threat of fruit safety production, and the inhibition of plant growth and development, so as to alleviate the peroxidation of leaf membrane , Use less calcium, improve the effect of plant growth inhibition

Inactive Publication Date: 2011-01-19
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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Problems solved by technology

After the rootstock absorbs excessive heavy metal cadmium, not only the growth and development of the plant will be inhibited, but also the redundant active heavy metal cadmium ions will not be chelated in the root. After being transported to the scion through the grafting interface, it will affect the cadmium content in the fruit, thereby affecting the safe production of the fruit. create a threat

Method used

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  • Method for reducing overground part heavy metal cadmium accumulation of rosaceae fruit tree rootstock
  • Method for reducing overground part heavy metal cadmium accumulation of rosaceae fruit tree rootstock
  • Method for reducing overground part heavy metal cadmium accumulation of rosaceae fruit tree rootstock

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Embodiment Construction

[0018] 1 Materials and methods

[0019] 1.1 Experimental design

[0020] The pear rootstock Pyrus calleryana Dcne., which is widely used in pear producing areas in southern my country, was used as the research material. The mature seeds of soybean pear were rinsed with running water, dried in the shade, seed-dressed with wet sand, and stored in a refrigerator at 4°C for stratification treatment. After 4 months, the seeds were taken out and sown in yellow-brown soil matrix pots (each pot contains 1kg of yellow-brown soil, the main physical and chemical properties of the soil: pH value 6.21, organic matter content 20.43g / kg, total nitrogen 1.53g / kg, total nitrogen Phosphorus 1.05g / kg, total potassium 19.21g / kg, cadmium is added in the form of cadmium chloride aqueous solution, stirred and mixed, dried and crushed in the shade, and potted after one month), calcium chloride is added before planting, fully mixed, 30 days after emergence And 45 days spray calcium chloride aqueous ...

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Abstract

The invention relates to a method for reducing overground part heavy metal cadmium accumulation of rosaceae fruit tree rootstock, which comprises the step of applying calcium-containing substances in soil, and is characterized by spraying the calcium-containing substances on leaf surfaces on the premise of applying the calcium-containing substances in the soil, wherein the calcium-containing substance is calcium chloride. The specific method comprises the following steps: before planting a fruit tree, applying the calcium chloride in the soil in a nursery or pot; fully mixing the calcium chloride and the soil; spraying calcium chloride aqueous solution once 25-35 days after the fruit tree germinates, wherein the content of the calcium chloride sprayed onto each plant is 1-3mg; and then spraying the calcium chloride aqueous solution again 40-50 days after the fruit tree germinates, wherein the content of the calcium chloride sprayed onto each plant is 1-3mg.

Description

technical field [0001] The invention relates to a method for reducing cadmium content in plants, in particular to a method for reducing the accumulation of heavy metal cadmium in the rootstock of Rosaceae fruit trees. Background technique [0002] Cadmium is a heavy metal that is highly toxic to animals and plants, and it is mainly distributed in soil through natural processes and human activities. In recent years, due to the unreasonable application of phosphate fertilizers and sludge, as well as the "three wastes" produced by mining and smelting industries, large areas of agricultural soil have been polluted by cadmium (Sanitá di Toppi, L. and Gabbrielli, R. Response to cadmium in higher plants. Environmental & Experimental Botany, 1999, 41, 105-130). Cadmium pollution is widespread in the world and is becoming more and more serious. The area of ​​land polluted by cadmium in my country has exceeded 13,330 hm 2 (Chen Huaiman, et al. Heavy metal pollution in soil plant sys...

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Application Information

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IPC IPC(8): A01G17/00
Inventor 李慧丛郁常有宏蔺经
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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