Effect of long term FYM and npk mineral fertilizer application on the soil n fraction(Garz and Chaanin 1990) Treatment Total N (g/kg) Mineralizable N(mg/kg) Stable n (g/kg) No fertilizer 58.8 0.95 NPK, mineral 1.07 ) 0.93 NPK+FYM 1.17 70.3 NPK straw 1.13 72.3 1.00
Effect of long term FYM and NPK mineral fertilizer application on the soil N fraction (Garz and Chaanin 1990) Treatment Total N (g/kg) Mineralizable N (mg/kg) Stable N (g/kg) No fertilizer 1.05 58.8 0.95 NPK, mineral 1.07 59.5 0.93 NPK+FYM 1.17 70.3 1.06 NPK + straw 1.13 72.3 1.00
Rates of Manure for Nitrogen Needs The nitrogen in poultry manure is in released fastest, as most is the urea or uric acid form, with 90% of nitrogen released in the first year Fresh manure which contains both the urine and solid portions and has a large amount of urea or uric acid provides a somewhat slower release rate, with approximately 75% of the total nitrogen released the first year
▪ The nitrogen in poultry manure is in released fastest, as most is the urea or uric acid form, with 90% of nitrogen released in the first year. ▪ Fresh manure which contains both the urine and solid portions and has a large amount of urea or uric acid provides a somewhat slower release rate, with approximately 75% of the total nitrogen released the first year. Rates of Manure for Nitrogen Needs
Rates of Manure for Nitrogen needs Generally, poultry manure is highest in nitrogen content, followed by hog(肥猪 steer, sheep, dairy, and horse manure Feedlot(饲育场), steer manure requires fairly high rates to meet first- year nitrogen requirements because of its lower nitrogen percent and gradual nitrogen release characteristics
▪ Generally, poultry manure is highest in nitrogen content, followed by hog(肥猪), steer, sheep, dairy, and horse manure. ▪ Feedlot(饲育场）, steer manure requires fairly high rates to meet firstyear nitrogen requirements because of its lower nitrogen percent and gradual nitrogen release characteristics. Rates of Manure for Nitrogen Needs
Night so人粪尿 Excrement(大便) Urine(尿) Night soil is one of easily available organic fertilizers Storage: avoiding nutrients leaching and volatilization Harmless treatment(无害化处理): to kill disease organisms and parasitic worms (F 生虫) It prefer to vegetable crops and cereal crops etc
Night soil 人粪尿 ▪ Excrement (大便) ▪ Urine (尿） Night soil is one of easily available organic fertilizers Storage: avoiding nutrients leaching and volatilization Harmless treatment (无害化处理）：to kill disease organisms and parasitic worms（寄 生虫） It prefer to vegetable crops and cereal crops etc
Nutrients concentration of night soil Water OM N POKo Excrement >70%20% 0.5 Urine >90% 0.5 0.13 0.19 Excrement and urine8%|5%∞1090050.8020.8020.3
Nutrients concentration of night soil Water OM N P2O5 K2O Excrement >70% >20% 1.0 0.5 0.37 Urine >90% 3% 0.5 0.13 0.19 Excrement and urine 80% 5%∽10% 0.5∽0.8 0.2∽0.8 0.2∽0.3