The Variety Of Soil Nitrogen Under Different Cultivation Conditions In Maize Continuous System Of Jilin

To understand the northeastern region of maize high yielding soil nitrogen environmentalbenefits, explore soil nitrate reasonable threshold in the region, providing a theoretical basis foragricultural production, the residual soil inorganic nitrogen in main spring maize productionareas were investigated and analyzed; and there was an experiment in Gongzhuling andNong’an by field trials and laboratory experiments combined approach, and then theexperiment was conducted to get an analysis in different cultivation patterns and nitrogenapplication soil after harvest no nitrate accumulation and vertical distribution.The result showed that the residue nitrate in soil was90.1kg/hm2in Jilin Province. Itproved that it had a larger capacity and increase efficiency space environment. High yieldcultivation methods could improve the yield significantly. Compared with nitrogen level of320kg/hm2, it could make a habit cultivation way increase33.7%. Normally, high-yield cultivationmode could significantly reduce nitrate down after the2007and2009, the NO3--N account in70-100cm was lower with17.9kg/hm2than that of cultivation treatment. The nitrogenapplication rate was increased of18.0%from2009to2012in the high yield and efficient mode,and the deep soil NO3--N accumulation amount was reduced22.6%. There was a remarkableeconomic and environmental benefit. The N application rate with195kg/hm2-225kg/hm2wassuitable for maize in Jilin province.In this study, a safe and sustainable soil nitrogen soil prime technical approach could beachieved by optimizing the cultivation measures. It also can improved the maize yield in ourprovince. In addition, it provided technical support to safe environment.