Method for cultivating tomato rich in selenium and glutathione

Abstract

The invention relates to a method for cultivating tomatoes rich in selenium and glutathione, which comprises following steps: (a). organic compound fertilizer special for the tomatoes rich in selenium and glutathione when the seedlings of the tomatoes are cultivated; the density of the seedlings should be within the range of 160-180 seedlings per square meter; and the use amount of the fertilizer is 10-15kg / mu and the fertilizer is evenly applied to a seedbed; (b). before transplanting, the organic compound fertilizer special for the tomatoes rich in selenium and glutathione is applied and the application amount should be within the range of 80-100kg / mu; (c). and during the tomato blossoming and fruit settling period, the organic compound fertilizer special for the tomatoes rich in selenium and glutathione is applied with the application amount of 30-50kg / mu; and during the whole cultivating process of the tomatoes, bread yeast fermentation waste liquid is irrigated to maintain moderate moisture content of the soil based on the soil moisture content. According the cultivating method provided herein, sufficient glutathione synthetic precursor and selenium sources are provided for the seedlings of the tomatoes from the seedling cultivating stage, thus the tomatoes can absorb nutrient in the whole growth period and the nutrient can be transformed into the glutathione and organic selenium through photosynthesis; and the glutathione and organic selenium contents in the tomatoes are high, thus the nutritional value is high.

Description

technical field [0001] The invention relates to a cultivation method for selenium-rich and glutathione-enriched tomatoes, belonging to the technical field of tomato cultivation. Background technique [0002] Tomatoes have the effects of stopping bleeding, lowering blood pressure, diuresis, invigorating the stomach and eliminating food, cooling blood and calming the liver. Tomatoes are also rich in antioxidants, which can prevent free radicals from damaging the skin, and have obvious cosmetic and anti-wrinkle effects. Tomato growth requires a loose, fertile, water-retaining, and nutritious substrate. Tomatoes require a large amount of fertilizer. Sufficient nutrition should be ensured in each period, but there are certain differences in fertilizer requirements in each growth period. The early stage focuses on nitrogen fertilizer, and the later stage focuses on Potassium and phosphate fertilizers are required throughout the growth period, but the demand for potassium fertilize...

AI Technical Summary

Problems solved by technology

[0004] At present, the production of selenium-enriched tomatoes adopts the method of foliar spraying inorganic selenium, which has obvious disadvantages. First, foliar spraying requires a relatively high content of selenium fertilizer, which increases the cost of fertilizer. Secondly, foliar fertilization is easily affected by the environment, and selenium fertilizer is easy If it falls into the field, it will be lost with water and soil. In addition, foliar fertilization will easily lead to excess selenium remaining on the tomato surface, which is toxic and has low safety.

[0005] In addition, the existing chemical fertilizers are used as tomato planting fertilizers. When the application amount is too small, the fertility is not enough, and when the application amount is too large, it is easy to cause root or bud burn; the tomato cultivated by applying chemical fertilizer has poor taste, and the natural antioxidant in tomato is beneficial to human health. Components such as glutathione, tomatine are low in content, resulting in low nutritional value of tomato

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