A fertilizer ratio method for effectively reducing heavy metal cadmium content in tobacco leaves

A technology of heavy metals and tobacco leaves, applied in fertilization methods, fertilizer mixtures, fertilization devices, etc., can solve the problems of no economic value, slow repair speed, secondary pollution, etc., and achieve the effects of strong practicability, easy access, and reduced cadmium content

Active Publication Date: 2016-09-28
LILING BRANCH ZHUZHOU CO HUNAN TOBACCO CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical and chemical treatment technologies used in the past not only require special machinery and equipment and expertise, but also may cause secondary pollution due to high cost, which cannot solve the fundamental problem
Phytoremediation also has some limitations such as slow repair speed and most of the repaired plants have no economic value.

Method used

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  • A fertilizer ratio method for effectively reducing heavy metal cadmium content in tobacco leaves
  • A fertilizer ratio method for effectively reducing heavy metal cadmium content in tobacco leaves

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: Carry out the pot experiment of reducing cadmium content in the tobacco leaf, this test is carried out in Yunyuan Tobacco Test Base of Hunan Agricultural University, adopts the tobacco field soil of Red Farm, Chaling County, Zhuzhou City, Hunan Province, and the soil cadmium content is 0.587mg / kg, The pH is 4.77. The test varieties were Yunyan 87 and K326, and the test period was from May to September 2014.

[0014] Adopt 31cm in diameter, 28cm high potted test pots, each pot is equipped with 15kg of red farm tobacco field soil, and then two tobacco varieties, Yunyan 87 and K326, are planted in the pots, 1 plant per pot, and 3 repetitions are set for each variety. 1 control, the same routine management (local customary management in Chaling, Zhuzhou) was used in each test basin. Topdressing the tobacco for the first time after 1 month of base fertilizer application, the fertilization rate is 5g / plant of potassium carbonate and 2.5g / plant of dipotassium hy...

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Abstract

The present invention provides a fertilizer proportioning method for effectively reducing the content of heavy metal cadmium in tobacco leaves, which includes transplanting tobacco seedlings in tobacco fields slightly polluted with cadmium according to their natural growth period, applying special base fertilizer for tobacco, and topping tobacco leaves with low quality. Removal of foot leaves, follow-up management of diseases and insect pests, and field moisture management; after applying tobacco-specific base fertilizer, dissolve potassium carbonate and dipotassium hydrogen phosphate in water for two topdressings, and apply potassium carbonate 5g/plant and phosphoric acid for the first topdressing Dipotassium hydrogen 2.5g/plant, and the second topdressing application of potassium carbonate 7.5g/plant and dipotassium hydrogen phosphate 3.5g/plant. The purpose of the invention is to reduce the cadmium content in the tobacco leaves and weaken the harm of smoking to the human body. The invention adopts common fertilizers, has low cost, can significantly reduce the cadmium content of tobacco leaves in acidic soil only by fertilizing, has a wide range of applications, does not cause secondary pollution to soil, and does not affect the quality and yield of tobacco leaves.

Description

technical field [0001] The invention relates to a tobacco planting fertilizer, in particular to a fertilizer proportioning method for effectively reducing the heavy metal cadmium content in tobacco leaves. Background technique [0002] The causes of heavy metal pollution in tobacco leaves are many and complex. Heavy metals in tobacco leaves mainly include copper, zinc, lead, cadmium, mercury, chromium and so on. The content of heavy metals in tobacco leaves is closely related to the ecological environment conditions such as soil, climate, and industrial activities in the tobacco area, as well as production technical measures such as the use of pesticides and fertilizers. In recent years, with the rapid development of the economy and the strengthening of people's health awareness, tobacco heavy metal pollution has attracted more and more attention. At the Ninth Asia-Pacific Conference on Tobacco and Health in 2010, a scientific research report pointed out that 13 tobacco bra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G1/06A01C21/00
Inventor 罗真华张红兵高志强曾清如彭亮周毅谢会雅晏哲
Owner LILING BRANCH ZHUZHOU CO HUNAN TOBACCO CO LTD
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