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通过连续3年粪肥培肥土壤试验,研究鸡粪施用量对土壤呼吸速率、玉米产量及其构成因素的影响。结果表明:当施肥量达45.0t/hm2时土壤呼吸速率达到最大,为8.64μmol/m2.s,较对照6.33μmol/m2.s提高了36.49%;施入鸡粪后可显著提高玉米产量,平均较对照增产28.67%,且施鸡粪后第2年增产幅度较大;施鸡粪可有效增加玉米穗粗、百粒重和穗粒数,降低秃尖长,促进玉米增产,从而增加收益;鸡粪施肥当年与第2年为肥效发挥的关键年份,鸡粪肥效基本为3年。因此,可以确定鸡粪施肥量为45.0t/hm2为生产上适宜施肥量,且鸡粪施肥周期为3年。
Through three years of manure fertilization soil test, the effects of the application of chicken manure on soil respiration rate, corn yield and its components were studied. The results showed that the maximum soil respiration rate was 8.64μmol / m 2 s when the fertilizer was 45.0t / hm 2, which was 36.49% higher than that of the control 6.33μmol / m 2 s. After applying chicken manure, the soil respiration rate was significantly increased, The average yield was 28.67% more than that of the control, and the yield increase was larger in the second year after application of chicken manure. Application of chicken manure could increase the ear diameter, the weight of 100 grains and the number of grains per ear, decrease the length of the bald head, increase the yield of corn and increase the yield ; Chicken manure fertilization year and year 2 for the key years to play a fertile, chicken manure efficiency is basically 3 years. Therefore, we can determine the amount of chicken manure applied 45.0t / hm2 for the production of suitable fertilization, and chicken manure period of 3 years.