论文部分内容阅读
选用磷低效大豆基因型D03、D05、D17和D18及磷高效大豆基因型D31、D34、D37和D38,采用土培试验,设高(+P)、低磷(-P)2个处理,分析了不同磷效率大豆苗期吸收氮磷钾的差异。结果表明,(-P)处理下,不同磷高效率大豆基因型根茎叶吸磷量有所不同,根茎叶的干重与吸磷量呈显著或极显著正相关,与磷利用效率呈负相关,但未达到显著水平,根、茎和叶的吸氮量和吸钾量均呈下降趋势。低磷胁迫下,抑制大豆苗期植株对氮磷钾的吸收,但磷高效大豆基因型对低磷胁迫的适应能力明显高于磷低效基因型。
Phosphorus inefficient soybean genotypes D03, D05, D17 and D18 and phosphorus efficient soybean genotypes D31, D34, D37 and D38 were selected to study the effects of high phosphorus (P) and low phosphorus (P) The differences of N, P and K uptake by different phosphorus efficiency soybean seedlings were analyzed. The results showed that under (- P) treatment, the uptake of phosphorus in rhizome leaves of different P efficient soybean genotypes was different, the dry weight of rhizome leaf leaves had a significant or very significant positive correlation with the P uptake, and negatively correlated with phosphorus use efficiency , But did not reach the significant level. The nitrogen uptake and potassium uptake of roots, stems and leaves showed a decreasing trend. Under phosphorus stress, the uptake of nitrogen, phosphorus and potassium in soybean seedling plants was inhibited, but the adaptability of phosphorus-efficient soybean genotypes to low-phosphorus stress was significantly higher than that of phosphorus-inefficient genotypes.