A kind of biological fertilizer for reducing cadmium content in tobacco and its preparation method and application

Abstract

The invention discloses a biological fertilizer for reducing cadmium content in tobacco, a preparation method and an application thereof. The biological fertilizer comprises the following components in parts by weight: 30-40 parts of wheat bran, 30-40 parts of orange peel, 20-30 parts of potassium metasilicate, 10-20 parts of meerschaum, and 0.2 parts of microbe bacterial strain. The microbe bacterial strain comprises phosphate solubilizing bacteria, potassium releasing bacteria, azotobacteria and bacillus. The biological fertilizer has the beneficial effects that the preparation method is simple, the components are easily obtained, the practicability is strong, and the biological fertilizer is convenient for popularization in agriculture production. The operation mode is simple, the available cadmium in acidic soil and cadmium content in tobacco leaf can be obviously reduced through fertilizing, secondary pollution is not generated on the soil, and output and quality of the tobacco leaf are increased.

Description

technical field [0001] The invention relates to a biological fertilizer for reducing cadmium content in tobacco, a preparation method and application thereof, and belongs to the field of agricultural fertilizers. Background technique [0002] Tobacco is the main economic crop in my country and the foundation of the cigarette industry. The Ninth Asia-Pacific Conference on Tobacco or Health released a survey report on China Tobacco, which showed that heavy metals were detected in 13 brands of cigarettes produced in China, mainly containing cadmium, arsenic, lead and mercury, which were nearly three times higher than those in foreign cigarettes. In recent years, the investigation of heavy metals in the main tobacco producing areas of my country found that cadmium is the main heavy metal in tobacco leaves, and its content is much higher than that of arsenic, lead and mercury. Cadmium is one of the most common and most toxic heavy metals polluted in farmland. Once absorbed by pl...

AI Technical Summary

Problems solved by technology

The period of phytoremediation is long and most of the remediation plants have no economic value and cannot be promoted on a large scale

Adjust soil pH and Eh by lime and other methods to reduce soil available cadmium. Although the effect is quick, the dosage is large and the cost is high, which will have a negative impact on the soil environment. This is the main bottleneck restricting its development.

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