论文部分内容阅读
为了研究不同难溶性磷(钙磷,铝磷和铁磷)与大豆根系生长的关系,以田间筛选试验为基础,采用室内砂培与水培相结合的栽培方法,分别对磷高效基因型(东农44和东大1号)和磷低效基因型(黑河13和黑河24)大豆苗期根系生长进行比较。结果表明:4个基因型大豆利用难溶性磷酸盐的能力存在显著差异。难溶性磷源条件下,各基因型大豆的根干重、根冠比、总根长、根总表面积比对照处理均有显著增加,而根系全磷浓度、磷含量和平均半径均减小。磷高效基因型大豆在各处理下的根长和根表面积均大于磷低效基因型,但磷高效基因型部分性状的适应性未表现出优势。
In order to study the relationship between the different insoluble phosphorus (calcium phosphate, aluminum phosphorus and iron phosphorus) and the growth of soybean root system, based on the field screening experiments, indoor sand culture and hydroponic culture methods were used to compare the effects of phosphorus efficient genotype Dongnong 44 and Dongda 1) and phosphorus inefficient genotypes (Heihe 13 and Heihe 24) at the seedling stage. The results showed that there were significant differences in the ability of four genotypes to utilize insoluble phosphates. Under the conditions of insoluble phosphorus sources, the root dry weight, root / shoot ratio, total root length and total surface area of all genotypes increased significantly compared with the control, while the total phosphorus concentration, phosphorus content and average radius decreased. Phosphorus-efficient genotype soybean had higher root length and root surface area under each treatment than phosphorus inefficient genotype, but the adaptability of some traits of phosphorus-efficient genotype did not show any advantage.