【摘要】 通过对不同磷效率类型品种 (系 )性状表现的方差分析 ,阐明了春小麦磷高效品种的性状特征。当受到同一缺磷胁迫时 ,耐缺磷的品种具有较高的穗分化和结实能力 ,品种耐缺磷能力越强 ,对加磷反应越不敏感 ;品种的磷利用效率同耐缺磷能力和对加磷反应敏感性无关。具有发达根系的品种吸磷能力强、耐缺磷程度高更多还原

【Abstract】 Based on the identification and classification of the phosphorus efficiency of spring wheat varieties, characteristic of phosphorus efficient varieties were made clear by variance analysis to different efficient varieties. Under phosphorus stress condition, there were high ability to spikelet and floscule differentiation and seed setting. The sensitivity to phosphorus application was decreased forvanieties with the tolerance to phosphorus deficiency. The phosphorus use efficiency was not related to the ability to tolerance phosphorus deficiency and sensitivity to phosphorus application. There was high ability to uptake phosphorus and tolerance phosphorus stress in the varieties with strong root system.更多还原