Experimental Study on Utilization Rate of Nitrogen,Phosphorus and Potassium Fertilizers for Direct-seeded Rapeseed
In recent years,the direct-seeded rapeseed cultivation has developed rapidly in Mianxian County,with over 80％of rapeseed planting in the county adopting direct seeding.To precisely understand fertilizer demand patterns and implement precise fertilization for direct-seeded rapeseed,an experiment on fertilizer utilization rates was conducted by Mianxian Agricultural Technology Extension Center during direct-seeded rapeseed production.After calculation,in the context of promoting nitrogen,phosphorus,and potassium formula fertilization technology in Mian County,the required uptake of pure nitrogen,phosphorus pentoxide,and potassium oxide for every 100kg of rapeseed is 5.02kg,2.57kg,and 6.22kg,respectively.The utilization rates are 46.5％for nitrogen,18.9％for phosphorus,and 53.1％for potassium fertilizers.
Direct-seededRapeseedNitrogen,phosphorus and potassiumFertilizer utilization rate
NETL
NSTL
万方数据
