A kind of microbe-enhanced selenium-enriched vegetable hydroponic method and its application

Abstract

The invention discloses a microorganism-enhanced selenium-enriched vegetable hydroponic method and application thereof, which comprises the steps of vegetable seedling cultivation, vegetable seedling hardening, microbial root system colonization, vegetable transplantation and the like. The method of the present invention colonizes Escherichia coli EG16 in the root of vegetables, compared with the general hydroponic method, it can effectively promote the growth of vegetables, reduce the physiological stress of Se, improve the stress resistance of vegetables, and increase the yield of vegetables; and the method of the present invention The concentration range of medium selenium is suitable, it will not cause poisonous damage to plants, and the production waste liquid is not easy to cause environmental pollution. In the process of hydroponics, only the nutrient solution containing selenium needs to be replenished in time, the daily management process is less, the operation is simple, and the overall operating cost is low.

Description

technical field [0001] The invention belongs to the technical field of hydroponic vegetables, and in particular relates to a microbe-enhanced selenium-enriched vegetable hydroponic method and an application thereof. Background technique [0002] Selenium (Se) is an essential trace element for the human body. It plays an important role in synthesizing antioxidant system enzymes, regulating human immunity, anti-aging, and anti-cancer. However, the distribution of selenium is extremely uneven. Studies have shown that the average daily selenium intake of ordinary people is only 28-40 μg, which is far lower than the reference intake of 55 μg selenium per day for healthy adults. Diet is the main way for the human body to absorb selenium. Properly increasing the selenium content of foods and popularizing the consumption of selenium-rich foods are very important for increasing the daily average selenium intake of people in low-selenium areas and maintaining their health. [0003] V...

AI Technical Summary

Problems solved by technology

The soil selenium application method is to directly apply selenium fertilizer to the soil to promote the absorption of selenium by plants, but the utilization rate of selenium in this method is not high, and the selenium that cannot be absorbed by plants will remain in the soil, which is easy to cause environmental pollution

Foliar spraying of selenium can effectively reduce the influence of soil factors on the efficiency of selenium application, and can further reduce the application amount of selenium, but the continuous supply capacity of selenium in this method is limited, and there are strict requirements on the period of selenium application. Plant growth is adversely affected, so it is often necessary to adjust the selenium application period, selenium application amount and selenium application frequency in actual production, resulting in complex production processes and increased labor costs

The hydroponic method of selenium-containing nutrient solution can also reduce the influence of soil factors on the efficiency of selenium application. At the same time, the continuous supply of selenium can also be guaranteed, and it is not easy to cause environmental pollution. It is suitable for factory production and is currently widely promoted. Selenium-enriched vegetable cultivation methods, but the conventional hydroponic selenium-enriched methods generally have problems such as low selenium utilization efficiency, improper selenium content in nutrient solution will cause stress to plants, cumbersome daily operations, and high management costs.

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