| A completely random split -block experimental design was used to study the best amount of Pleurotusostreatus residue fielding, and the effect of returning on maize physiological traits, yield and soil fertility, compared with no fertilizer and chemical fertilize. The results showed that, P. ostreatus residue could improve the physiological traits, yield of maize and the nutrient content of soil. The maize growth status, characteristics and yield of 22 500 kg/hm2 treatment were better than those in the quantity of 20 000 kg/hm2 and 25 000 kg/hm2 and the chemical fertilization. When we applied 22500 kg mushroom residue per hectare, the crop was higher and leaves were more than other treatment, also the ear characteristics of row number, length, grains weight and 1000-grains weight were the best and the bald tip rate was lower, maize yield increased by 17.39% and 8.06%, respectively compared to no fertilization and chemical fertilization. At the same time, P. ostreatus residue returning was benefit to the accumulation of organic matter, inorganic nitrogen and available nutrients in topsoil. The higher the quantity of P. ostreatus residue, the higher the soil nutrient contents except organic matter, and the contents of soil available potassium, available phosphorus were higher than that of no fertilizer by 16.58%-34.98% and 45.70%-86.20%, respectively. The results indicate that 22 500 kg/hm2 is an ideal application for maize growth, ear characteristics, yield and fertilizer effect. |
