Effects of Nitrogen Fertilizer Management on Growth and Development,Yield and Quality of Peanut in Northern Xinjiang
In order to clarify the suitable N fertilizer management model for peanut production,using Huayu 25 as the test variety,four N levels(N1:90 kg/ha,N2:135 kg/ha,N3:180 kg/ha,N4:225 kg/ha)and three N application methods(T1:1/2 base fertilizer+1/2 seedling fertilizer,T2:1/2 base fertilizer+1/4 seedling fertilizer+1/4 flower needle fertilizer,T3:1/2 base fertilizer+l/6 seedling fertilizer+1/6 flower needle fertilizer+1/6 pod fertilizer)were set up,and no N application was the control(CK),to analyze the influence of different N fertilizer management model on the growth,development,yield and quality of peanut.The results showed that by increasing the nitrogen fertilizer in the range of 90-225 kg/ha,the main stem height,the first collateral branch length and the number of branches were the highest in N4 treatment.The amount of dry matter and yield increased first and then decreased,with the highest in N3 treatment.The contents of protein,fat and oleic acid were the highest in N3 treatment.When the N fertilizer dosage was the same,the amount of dry matter accumulation and yield were the highest in T3 treatment.The contents of protein,fat and oleic acid were the highest in T2 treatment.The dry matter accumulation and yield of peanut were higher than other treatments,and the quality was better with the N3T3 treatment.In terms of yield improvement and quality enhancement,180 kg/ha of N,90 kg/ha of basal N fertilizer and 30 kg/ha top dressing of N fertilizer at the seedling,flowering needle and pod setting stages can be considered as the best N fertilizer management model for achieving high yield and quality of peanut in northern Xinjiang.
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