磷素对不同磷效率基因型大豆根系养分吸收特性的影响.doc


磷素对不同磷效率基因型大豆根系养分吸
收特性的影响#
敖雪1,马海艳1,朱倩1,梁亚男1,张慧君1,王海英1,刘涛2,谢甫绨1**
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(1. 沈阳农业大学农学院,沈阳 110866;
2. 内蒙古中农种子科技有限公司,内蒙古通辽 028000)
摘要:以 2 类型大豆品种(品系)为试材,研究不同磷浓度处理下,两类型大豆根系的养分
吸收特性。研究结果表明,在低磷处理下,鼓粒期和始熟期磷高效品种根系氮的百分含量显
著高于磷低效品种;除分枝期外其它生育期磷高效品种的根系 P%均高于磷低效品种的,平
均高 %;整个生育期磷高效品种根的 K%均高于磷低效品种的,平均高 %。磷高效
品种的磷和钾的积累量也均高于磷低效品种的(平均高 %)。高磷处理下,磷高效品种
的氮和磷积累量在不同生育期均高于磷低效品种的;开花期、鼓粒期到始熟期磷高效品种根
的钾积累量均极显著高于磷低效品种的,平均高 %。与低磷相比,中磷和高磷处理能
显著增加磷低效品种的根系氮、磷和钾的积累量,而磷高效品种则相对变化较小,即使在较
低的磷浓度下其根系也能吸收较多的氮、磷和钾。
关键词:大豆;磷高效;根系;养分
中图分类号:
Effect of Phosphorus to Nutrient Absorption
Characteristics of Roots in Soybean with Different
Phosphorus Efficiency
AO Xue1, MA Haiyan1, ZHU Qian1, LIANG Yanan1, ZHANG Huijun1,
WANG Haiying1, LIU Tao2, XIE Futi1
(1. College of Agronomy, Shenyang Agricultural University, ShenYang 110866;
2. Inner Mongolia Zhongnong Seed Technology Co., Ltd., Tongliao Inner Mongolia 028000)
Abstract: The current pared the nutrient absorption properties of root system of two
soybean genotypes under different P concentration treatment. The results showed that: under low
P level, the percentage content of N, P, K of the high P efficiency genotypes were all higher than
that of the low P efficiency genotypes respectively at seed filling and initial maturity stage, at all
growth stages except branching in average higher %, and at