The invention provides a preparation method of a
seedling growing substrate for
greenhouse planting, wherein the preparation method comprises the following step: preparing materials:
saw dust,
cow dung,
chicken manure,
straw powder, crushed corn cob,
perlite,
vermiculite,
plant ash, belvedere fruit, pine needle,
thunder god
vine, radix stemonae,
sodium alginate,
potassium fulvate,
sodium dodecyl sulfate,
sodium carboxymethyl starch, a sodium
chloride water solution with a
mass percent of 15 percent, and fine earth; and the preparation method specifically comprises the following steps: A, fermenting raw materials, namely, after uniformly stirring the
saw dust, the
cow dung, the
chicken manure, the
straw powder, the crushed corn cob and the fine earth, controlling the
water content to be 57-62 percent, adding a rotting-promoting agent; B, preparing a
traditional Chinese medicine extraction solution; C, taking the
plant ash to obtain a
plant ash leaching liquor; D, adding the
sodium alginate, the
potassium fulvate, the
sodium dodecyl sulfate and the
sodium carboxymethyl starch in the sodium
chloride water solution with a
mass percent of 15 percent; E, soaking the
vermiculite in the
traditional Chinese medicine extraction solution; and F, proportioning the fermented materials obtained in the step A, the soaked
pearlite obtained in the step D, and the
vermiculite obtained in the step E according to a ratio of 8:1:1. The
seedling growing substrate is simple in proportioning, convenient to use, good in
seedling growing effect, developed in seedling
root system, good in water-retaining property and rich in nutritional ingredients.