Phosphorus Uptake Behavior of Peanut Under Optimum Fertilization Management in China
Assessing pod yield and plant phosphorus demand can provide theoretical guidance for fertilization management of high yielding peanut(Arachis hypogaea L.).Following this rationale,a large dataset was collected from field experiments(n=265)across the main pea-nut planting regions of China for a period spanning from 1990 to 2021 to evaluate nutrient uptake behavior of peanut under current optimum fer-tilization management.Across the entire dataset,the results showed that average peanut pod yield and harvest index(HI)were 4 642 kg/hm2 and 0.54.The average peanut phosphorus(P)requirement was 6.45 kg/t.Across five ranges of pod yields(<3,3-<4,4-<5,5-6,and>6 t/hm2),both nutrient uptake and HI increased with increasing pod yield.The P requirement increased with yield,attributed to an in-crease in straw P concentration as P luxury uptake occurs under high pod yield.
国家科技期刊平台
NSTL
万方数据
