Studies On Reduction Of Nitrogen Fertilizer Effect Of Slow-released Fertilizers In Maize

In this experiment,four different kinds of new sustained-release compound fertilizers were used to carry out maize field experiments,including stable fertilizer,carbon-based maize special fertilizer,sulfur-coated urea,and new phosphorus corn compound fertilizer.This experiment according to the requirement,the following eight processing,respectively PK?5.67 kgK₂O kgP₂O₅,RMB$5.67 per acre?,NK?13.6 kgK₂O kg N,RMB$13.6 per acre?,NPK?kg N,5.67 kgP₂O₅ per acre,13.6 RMB$13.6 per acre kgK₂O?,SF1?24-10-10?,YNPK?add urea nitrogen and 0.1%NBPT urine enzyme inhibitors?,SNPK sulfur coated urea?34%?,no less nitrogen N0PK?kg N,5.67 kgP₂O₅ per acre,16.0 RMB$16.0 per acre kgK₂O?carbon based compound fertilizer BF1?24-10-10?.Stability of fertilizer is by adding different amount of urea nitrification inhibitors to control nitrogen transformation,new corn compound fertilizer is used to contain a certain amount of effective phosphorus and addition of nitrogen in a small amount of by-product as raw materials of new p compound fertilizer,by adding appropriate amount of nitrogen and potassium,according to the maize fertilizer specific design formula made into new p corn compound fertilizer.By using the above four different new type fertilizer to the field test,studies the four kinds of new type of slow release compound fertilizer after the reduction of nitrogen in comparison with conventional fertilizer application on soil available nitrogen nutrient content,basic reproductive traits of crops,crop nutrient absorption of reuse,fertilizer use efficiency,and ultimately affect the production.The results showed that the four different kinds of new type slow release compound fertilizer can affect the available nitrogen in the soil nutrient content,improve crops basic reproductive traits,promote the absorption of crop nutrients needed for recycling,improve fertilizer use efficiency and crop yield.1.Add the stability of the inhibitors of fertilizer can increase the soil available nitrogen content in the corresponding,and effectively suppress the soil nitrogen nitrification process,compared with conventional fertilization,the stability of fertilizer fertilization can maintain the supply of nitrogen in the soil,reducing security required for the growth of plant nutrients,especially in the middle of corn can supply sufficient and stable nitrogen demand for crops.2.Add the stability of the inhibitors of fertilizer can increase corn thick stems and plant height,along with the advance of maize growth period,can increase crop photosynthesis,provide adequate nutrients for late crops growth.Compared with conventional fertilization,the maintenance time of the maize leaves was prolonged,and the nutrients were accumulated to promote the growth of maize.3.New p corn compound fertilizer can provide adequate p demand,compared with conventional fertilization,in the corn of birth later period can improve the content of soil available p,meet the demand of corn to p,that source of phosphorus industry by-products processed can provide adequate p demand.4.Compared with conventional fertilization,the new type p corn compound fertilizer after the reduction of nitrogen can improve the fertilizer utilization ratio and the output of corn,dry matter weight,promoted the accumulation of NPK,corn for corn production play a certain role in promoting.Above all,the use of different kinds of new type fertilizer reduction compared with conventional fertilization,fertilization to maintain the supply of nitrogen in the soil,improve the corn reproductive traits,improve the corn crop yield and fertilizer use efficiency,provide the basis for reduction of fertilizer.