Preparation method of organic fruit and vegetable cultivation medium

Abstract

The invention discloses a preparation method of an organic fruit and vegetable cultivation medium. The preparation method comprises the steps of preparation of modified wheat straw, preparation of modified corn straw, preparation of bamboo charcoal, modification of bamboo charcoal and fermentation and compost. Acid modification of the wheat straw, glyoxal modification of the corn straw and alkalimodification of the bamboo charcoal are conducted in sequence, then ingredients and bacterial agents are added to farm livestock manure to conduct fermentation, and the organic fruit and vegetable cultivation medium is prepared after compounding. The preparation method has the advantages that agriculture by-products are used for preparing the cultivation medium, the environment is protected, fullutilization of materials is achieved, and the economic value is improved; heavy metal ions in the medium can be eluted to the bottom layer of the soil, and thus the content of the heavy metal ions inthe soil is lowered; the cultivation medium provides nutrient elements such as medium trace elements, organic matters and humic acid, further has the functions of improving the medium water binding capacity and the medium structure simultaneously, and is an efficient and environment-friendly organic fruit and vegetable cultivation medium.

Description

technical field [0001] The invention relates to the field of fruit and vegetable cultivation, in particular to a preparation method of an organic fruit and vegetable cultivation substrate. technical background [0002] Most of the cultivation substrates developed for organic fruits and vegetables in my country are organic-inorganic composite substrates, or composite substrates with complex formulas and peat as the main component, and the cost of use is relatively high. Most of the commonly used cultivation substrates use peat as the main raw material, and peat is mainly produced in Northeast my country, which is restricted by region and is a non-renewable resource. The mining and processing of raw materials has caused great damage and pollution to the environment, and the cost of using peat is relatively high. Exploitation will inevitably lead to the depletion of resources and destroy the ecological balance. In view of the above problems, it is very necessary to find a new t...

AI Technical Summary

Problems solved by technology

[0004] The Chinese invention patent of CN 103253992 B discloses an organic cultivation substrate produced by composting pig manure and sludge and its production method. In the inventive method, urban domestic sludge, fungal residue and pig manure are successively fermented and then mixed Decomposed and fermented compost is made into an organic cultivation substrate. The cultivation substrate in the inventive method has low salt content, moderate nutrient, does not damage the environment, and can meet the requirements of organic cultivation, but the inventive method does not treat the heavy metal ions in the substrate. It will cause a high content of heavy metal ions in the substrate, which will affect the growth of crops. Moreover, multiple long-term fermentation treatments of the cultivation substrate will reduce the content of organic matter and nutrients, resulting in waste of nutrients.