Abstract: To explore the general applicability of Phyto-Cat^TM soil conditioner to local crops in China, different concentration gradients of Phyto-Cat^TM soil conditioner dilutions were set up to study the improvement effect of Phyto-Cat^TM soil conditioner on seed germination rate and seedling traits of wheat（Triticum aestivum L.）, maize（Zea mays L.）, tomato（ Solanum lycopersicum L.）, pepper（ Capsicum annuum L.） and non-heading Chinese cabbage （Brassica chinensis L.）. On this basis, principal component analysis was used to reduce the dimensionality of the experimental data, and a functional relationship was established to comprehensively analyze the effect of Phyto-Cat^TM soil conditioner. The results showed that the low concentration of Phyto-Cat^TM soil conditioner could significantly improve the germination rate of wheat, tomato and pepper seeds, while the high concentration of Phyto-Cat^TM soil conditioner tended to breed miscellaneous bacteria in the dishes and reduce the seed germination potential and germination rate. Phyto-Cat^TM soil conditioner had a significant improvement effect on the seedling traits of the tested crops, and the effect of 8 mg/L Phyto-Cat^TM soil conditioner had exceeded that of Stanley water soluble fertilizer. Thus, it can be seen that Phyto-Cat^TM soil conditioner is very effective in improving seed germination and seedling traits of crops, improving soil structure and providing better fertilization effect than chemical fertilizers, and indirectly improving crop yield and quality.

Key words: soil conditioner, crop, germination rate, seedling traits, improvement effect