Nutritional additive capable of reducing harm of heavy metals and used in nursery stage and preparation method of nutritional additive

Abstract

The invention discloses a nutritional additive capable of reducing harm of heavy metals and used in a nursery stage. The nutritional additive capable of reducing harm of the heavy metals and used in the nursery stage is prepared from the following raw materials in parts by weight: 23-25 parts of peat soil, 18-22 parts of pollen pini, 3-5 parts of silicate sulfate, 2-3 parts of cysteine, 24-26 parts of cavings, 21-23 parts of fish meal, 7-9 parts of ammonium bicarbonate, 39-41 parts of volcanic, 63-68 parts of waste crop straws, 5-7 parts of composite fungal hyphae, 18-22 parts of threonine mother liquor, 16-18 parts of old tea leaves, and a proper amount of water. High adsorption performance of fermentation products such as the peat soil and the cavings is adopted, by substances such as polyphosphoric acid and organic acid which are secreted by fungi, a large amount of residual heavy metals in soil can be adsorbed in a complexing manner, toxicity of the heavy metals is weakened, the number of heavy metals which are transported to a ground part to a seedling root is reduced, therefore, seedlings of crops are protected against being poisoned by the heavy metals, healthful growth of the crops is guaranteed, and safety of later crop products is improved.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a nutrient additive for seedling raising which reduces the harm of heavy metals and a preparation method thereof. Background technique [0002] The growth and development of crops can be divided into three stages: seedling stage, growth stage and mature stage. The nutritional characteristics refer to the proportion of nutrient requirements in different stages, and are directly related to the level of crop yield. The seedling stage is a sensitive period for crops to require fertilizer. The nutritional status at this stage, especially nitrogen supply, is of great significance to its growth. It not only affects the nutritional level in the middle and later stages, but also determines the final yield level of the crop. [0003] Macrofungus refers to fungi that can be harvested by hand and can produce large fruiting bodies. Beneficial fungi have a synergistic effect and can joint...

AI Technical Summary

Problems solved by technology

[0004] Since the seedling stage of crop growth is short and requires less nutrients, there are few nutrient additives for crop seedling stage on the market, and they are mainly inorganic fertilizers. Long-term use not only causes nutrient imbalance, but also due to extremely low utilization The rate has led to the pollution of the soil environment, endangering crop growth and human health

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