The invention provides an organic seeding raising substrate, which comprises the following components in parts by weight: 30-40 parts of
peat, 40-50 parts of soil, 3-7 parts of
vermiculite, 3-7 parts of
perlite and 8-12 parts of
earthworm cast. The organic seeding raising substrate has the technical effects that (1) the
fertility is lasting, excellent
water content and ventilation performance are realized, the unit weight is proper and is generally 0.6-0.9, the substrate has balanced
nutrition, the effective
nitrogen, phosphorous and
potassium contents are greater than 1,000 mg / kg, the
organic matter content is greater than 10 percent, factors such as water,
fertilizer, air, temperature and the like required by seed
germination and
seedling growth can be coordinately supplied, the formation of strong rice seedlings is facilitated, the pH (Potential of
Hydrogen) is 5.5-7.0, and the acid and alkali buffering performance is good, and (2) the
earthworm cast is adopted, the proper using amount is discovered through a large number of experiments, so that the using amount of the
peat, i.e., an unrenewable resource, is reduced, and the technical effect of the organic
seedling raising substrate is improved. The cultivated strong rice
seedling has the advantages of good quality, short growth period and stronger
stress resistance; and the capacity is improved by 0.5 times compared with the normal substrate.