最佳养分管理下我国花生磷需求特征
Phosphorus Uptake Behavior of Peanut Under Optimum Fertilization Management in China
王红梅 1吕继龙2
作者信息
- 1. 郸城县农业科学研究所,河南周口 477150
- 2. 河南周口国家农业科技园区管理委员会,河南周口 477150
- 折叠
摘要
评价花生荚果产量和植株磷素需求,为高产花生的施肥管理提供理论指导.收集 1990-2021 年我国主要花生种植区的大量田间试验数据集(n=265),以评估在最佳施肥管理下花生的磷吸收特征.结果表明,在整个数据集中,平均花生荚果产量和收获指数(HI)分别为4 642 kg/hm2和0.54.花生荚果对磷(P)的平均需求量为6.45 kg/t.在<3、3～<4、4～<5、5～6 和>6 t/hm2 5 个荚果产量范围内,磷素吸收和HI均随荚果产量的增加而增加.磷需求量随着产量的增加而增加,这归因于在荚果产量高的情况下,秸秆磷的过量吸收.
Abstract
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.
关键词
花生/荚果产量/收获指数/磷素吸收/磷需求量Key words
Peanut/Pod yield/Harvest index(HI)/Phosphorus uptake/Phosphorus requirement引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据