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.