Effects of fertilizer on NH4+-N and NO3--N of soil in Hetao irrigation area
In order to obtain the optimal fertilizer combination of Hetao irrigation area and reduce the environmental contamination caused by the nitrogen leaching, slow controlled release fertilizer (HK), granular organic fertilizer (F), microbial fertilizer (W) and farmer accustomed fertilization (CK) had been set up as four fertilization treatments to discuss the impact of different fertilization combination on the content of NO3--N and NH4+-N in soil leaching solution in Hetao irrigation area. The results showed that the content of NO3--N and NH4+-N decreased as the soil depth increased and under the different treatments NH4+-N can be controlled efficiently. Microbial fertilizer (W) was able to weaken the process of the translation from nutrition to NH4+-N and the ammonification of the soil and therefore the volatilization of the ammonia in the soil was reduced.
国家科技期刊平台
NSTL
万方数据
维普
