Water hyacinth-utilizing rice machine rice transplanting and raising matrix and preparation method thereof

Abstract

The invention discloses a water hyacinth-utilizing rice machine rice transplanting and raising matrix and a preparation method thereof. The preparation method comprises the following steps of step one, salving water hyacinth in mature stage, uniformly spreading the water hyacinth for airing and grinding the aired water hyacinth to 3-5mm to obtain a water hyacinth plant grinded sample, and step two, uniformly mixing the water hyacinth plant grinded sample with an inorganic material and a water-retaining agent in proportion to obtain the rice machine rice transplanting and raising matrix, wherein the water hyacinth plant grinded sample occupies 75-90 parts by volume, the inorganic material occupies 10-25 parts by volume, the addition of the water-retaining agent is 0.1-3% of the total weight of the water hyacinth plant grinded sample and the inorganic material, the inorganic material is vermiculite or perlite, the pH value of the rice machine rice transplanting and raising matrix is 5.7-7.0, the dry bulk density is 0.31-0.41g / cm<3>, the total porosity is 50-75%, the aeration porosity is 5-15% and the water-retaining porosity is 50-70%. The rice machine rice transplanting and raising matrix disclosed by the invention has large bulk density, good air permeability and short production cycle, and has the advantage that the cost is reduced.

Description

technical field [0001] The invention relates to a production method of a rice seedling-raising substrate for machine-transplanted rice, in particular to a rice seedling-raising substrate produced by using water hyacinth and a preparation method thereof. Background technique [0002] Machine transplanting is a new intensive rice production technology and an important mode of rice production modernization, and standardized seedling raising using standard seedling trays (rice seedling raising substrate) is a key technology in the rice production process. At present, most areas that use seedling trays to raise seedlings still use soil-based nutrient soil as the medium. Therefore, the surface soil of a large amount of cultivated land will be damaged due to soil extraction for seedling raising, resulting in soil erosion and environmental damage; The process is labor-intensive, which affects the working efficiency of the rice transplanter; and the quality of the nutrient soil is un...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a rice machine transplanting and raising seedling substrate using water hyacinth and its preparation method, through resource utilization of the biological carrier-water hyacinth to control polluted water, not only fully recycle the nutrient elements such as nitrogen, phosphorus and potassium absorbed by water hyacinth , effectively purify the water quality of eutrophic water bodies, and effectively solve the current problems of rice machine-transplanted seedlings with large substrate capacity, poor ventilation, soil layer destruction year after year, and high labor intensity.