Abstract:

Pot experiments were conducted to preliminary study the effects of biotype rice specific fertilizers in black soil. The results indicated that all biotype rice specific fertilizers could promote potassium absorption and increase plant biomass in all growth stages. Plant dry weights of using biotype rice specific fertilizers treatment are 4.3%-8.1% higher than chemical fertilizer treatments contain equal nutrient contents at heading stage. The content soil available nutrients at the later growth stage is also higher in biotype rice specific fertilizers treatment than that in chemical fertilizer treatments, indicating the better effects of biofertilizers. Compared with common fertilizer treatment, the using efficiency of nitrogen, phosphorus and potassium for biotype fertilizer I treatment increased 11.8%, 18.9% and 26.6%, respectively. The yield of biotype fertilizer I treatment is higher significantly than other treatments. The quality of biotype fertilizer I treatment rice better than other treatments, but didn’t reach notable leave.