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河南省大豆品种磷素营养特性的差异研究

Studies on the difference of phosphorus nutrition characteristics among soybean varieties in Henan Province
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摘要 采用盆栽试验,设置不施磷(P0)和施0.15 mg P2O5/kg土(P1)两个处理,研究了33个河南省地方性大豆品种磷素营养特性的差异,旨在为磷高效大豆种质资源的开发利用提供依据。结果表明:根据大豆品种不同磷营养性状进行聚类分析,可将磷胁迫条件下供试大豆品种分为3类,其中第一类品种(产量高、磷吸收量大、磷利用效率中等)综合磷营养性状值最优;磷充足条件下供试大豆品种可分为4类,其中第一类品种(籽粒产量高,磷吸收量大,磷利用效率较高)综合磷营养性状值最好。相关分析表明,大豆苗期与成熟期的磷吸收量之间的相关性达显著以上水平(P0,r=0.5096**;P1,r=0.3596*);大豆苗期,磷素吸收总量和植株生长量的相关性较高(P0,r=0.8124**;P1,r=0.8724**),对生长起决定作用;成熟期,磷素利用效率对籽粒产量的影响有所增加,但是磷素吸收总量对籽粒产量的影响仍大于磷素利用效率。 The difference of phosphorus nutrition characteristics of 33 soybeans varieties were studied with pot experiment and with two phosphorus fertilizer(P2O5) rate treatments of P0(0 mg/kg) and P1 (0.15 mg/kg) to provide evidence for exploration and utilization of soybeans phosphorus efficiency germplasm. The results showed that in P deficient condition, the tested soybean varieties were classified to three classes by dendrogram by those nutrition traits, among which classl (with highest seed yield and P accumulation quantity, and with medium P utilization efficiency) showed best complex phosphorus nutrient trait; in P abundant condition, the tested soybeans varieties were classified to four classes, among which class 1 (with highest seed yield and P accumulation quantity, and with higher P utilization efficiency) showed best complex phosphorus nutrient trait. Statistical analysis showed that the correlation between the plant P accumulation in seedling and harvesting reached over significant level(P0, r = 0. 5096^** ;P1, r = 0. 3596^* ); in seedling, the plant P accumulation had significant correlation with plant dry weight (P0, r = 0. 8124^** ; P1, r = 0. 8724^**) and dominated the plant growth; in harvesting, the effect of P utilization on seed soybean yield increased;but which still was less than that of P accumulation.
出处 《干旱地区农业研究》 CSCD 北大核心 2008年第1期175-180,共6页 Agricultural Research in the Arid Areas
基金 河南省农业综合开发项目(30200108) 河南农业大学博士启动基金资助项目(30200141)
关键词 大豆 品种 磷素营养特性 soybean variety phosphorus nutrition characteristic
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