| The experiment studied that the effect of different fertilization treatments on total phosphorus of reclaimed soil for different years and the maize growth, the results shows that:(1) There were significant difference of the content of soil total phosphorus between fertilization treatments and control treatment, the effect of organic fertilization treatment was the best, and was higher than the other treatments, by 3.73%-7.61%, significant difference were observed between organic fertilization treatment and the other treatments. Inorganic+bacterial manure and organic+inorganic+ bacterial manure treatment followed, there were not significant difference between them. The reclaimed soil total phosphorus for seven years was higher than that for three years by 28.91%, that for three years was higher than for one year by 17.03%.(2) There were significant difference of the content of soil phosphatase between fertilization treatments and control treatment, the effect of organic+inorganic+bacterial manure treatment was best, and organic+inorganic fertilization treatment followed. Organic+inorganic+bacterial manure treatment was higher than inorganic, inorganic+bacterial manure treatment by 21.66%,20.86%. The reclaimed soil phosphatase for seven years was higher than that for three years by 16.14%, that for three years was higher than that for one year by 23.28%.(3) There were significant difference of content of soil organic phosphorus between fertilization treatments and control treatment.Soil active organic phosphorus of organic fertilization treatment, organic+inorganic+bacterial manure treatment were higher than other treatment, there were no significant difference observed between them, and each of them was significant difference with others. Organic treatment was higher than organic+ inorganic, organic+inorganic+bacteria manure, inorganic, inorganic+bacterial manure treatment by 6.61%, 7.76%,40.18%,36.36%. The reclaimed soil active organic phosphorus for seven years was higher than that for three years by 6.7%-53.42%, that for three years was higher than that for one year by 51.06%-148.33%.Soil neutral active organic phosphorus of organic+bacterial manure and organic treatment were higher, there were no significant difference observed between them, and organic+inorganic+bacterial manure and organic+inorganic treatment followed, there were no significant difference observed between them. Organic+bacterial manure treatment was higher than organic+inorganic+bacterial, organic+inorganic treatment by 4.33%,4.05%, it was higher than inorganic+bacterial manure treatment, inorganic treatment by 9.59%,1.56%. The reclamation soil neutral active organic phosphorus for seven years was higher than that for three years by 12.32%-12.32%, that for three years was higher than that for one year by 18.74%-58.73%.Soil middle stable organic phosphorus of organic treatment is best, followed by organic+inorganic+ bacterial manure treatment. Significant difference were observed between organic fertilization treatment and the other treatments, increased by 5.13%-27.69%. The reclamation soil middle stable organic phosphorus for seven years was higher than that for three years by 26.03%-26.03%; that for three years was higher than that for one year by 3.77%-3.77%.Soil high stable organic phosphorus of organic treatment was best, increased by 4.48%-39.29%than other treatments, organic+ bacterial manure treatment comes second. The reclamation soil high stable phosphorus for seven years was higher than reclamation three years by 1.65%-39.21%, that for three years was increased than that for one year by 50.98%-116.32%.(4) There were significant difference of the content of total phosphorus in maize grain between fertilization treatments and control treatment, the effect of inorganic+bacterial manure treatment was the best, and inorganic fertilization treatment followed, inorganic+bacterial manure treatment was higher than the other treatment by 7.29%-39.19%. The reclaimed soil total phosphorus in maize grain for seven years was higher than that for three years by 35.48%-35.48%, that for three years was higher than for one year by 82.61%-164.29%.There were significant difference of the content of total phosphorus in straw between fertilization treatments and control treatment, the effect of organic+inorganic+bacterial manure treatment was the best, and inorganic fertilization treatment followed, organic+inorganic+bacterial manure was higher than organic fertilizer treatment, organic+bacterial manure fertilizer by 30.79%,40.32%. The reclaimed soil total phosphorus in straw for seven years was higher than that for three years by 29.98%-80.74%, that for three years was higher than for one year by 69.33%-171.25%.(5) There were significant difference of the maize kernel weight hundreds between fertilization treatments and control treatment, the organic+bacterial manure treatment was the best, and organic+ inorganic+bacterial manure followed, organic+bacterial manure treatment was higher than other treatments by 4.68%-20.53%. The reclaimed maize kernel weight for seven years was higher than that for three years by 20.28%-33.53%, that for three years was higher than for one year by 17.70%-43.94%.There were significant difference of corn rows per ear between fertilization treatments and control treatment, Among organic+inorganic+bacterial manure treatment, organic+inorganic treatment, organic, organic+bacterial manure treatment, there were no significant difference, and they either of them has significant difference with organic+bacterial manure treatment and organic fertilizer treatment. The corn rows per ear on reclaimed soil for seven years was higher than that for three years by 0.21%-3.67%, that for three years was higher than for one year by 0.21%-3.90%.There were no significant difference of the corn row grains between inorganic treatment, inorganic+ bacterial manure treatment and control treatment, the other treatments has significant difference with control. Among organic+inorganic+bacterial manure treatment,organic+inorganic treatment, organic+ bacterial manure treatment, were no significant different. The corn row grains for seven years was higher than that for three years by 2.38%-5.48%, that for three years was higher than for one year by 1.18%-12.13%.(6) There were significant difference of maize yield between fertilization treatments and control treatment, the effect of organic+bacterial manure treatment was the best, followed by organic+inorganic+ bacterial manure treatment, organic+bacterial manure treatment was higher than the rest of the treatments by 4.20%-30.85%. The reclaimed soil maize yield for seven years was higher than that for three years by 24.35%-42.02%, that for three years was higher than for one year by 27.63%-58.54%. |
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