Effects of excessive phosphate fertilizer on growth and nutrient uptake of rape | 过量施磷对油菜吸收矿质养分的影响
2009
Hao Xiaoyu, Agricultural University of Hebei, Baoding(China), College of Resource and Environmental Science | Liao Wenhua, Agricultural University of Hebei, Baoding(China), College of Resource and Environmental Science | Liu Jianling, Agricultural University of Hebei, Baoding(China), College of Resource and Environmental Science
Chinese. 通过盆栽试验系统研究过量施磷对油菜生长和吸收氮、磷、钾、钙、镁、铁、锌养分的影响。结果表明：合理施用磷肥显著增加了油菜的生物量，但过量施用磷肥油菜的生物量无显著变化。随着磷肥用量的增加，油菜地上部和根部全磷的含量显著增加，过量施用磷肥油菜表现出奢侈吸收磷养分。磷肥用量与油菜地上部和根部的全氮和全钾含量均无显著相关性。随磷肥用量的增加，油菜地上部钙、镁、锌的含量显著降低，而铁含量呈先增加后下降的趋势。油菜地上部全磷含量与地上部钙、锌含量呈显著负相关关系；磷肥用量对油菜根系钙和镁的含量无显著影响，而根中锌和铁含量呈显著下降趋势。[著者文摘]
Show more [+] Less [-]English. The growth and nutrient uptake of rape was studied under excessive phosphate fertilizer in the pot experiment. The results showed that application of phosphate fertilizer significantly increased the biomass of rape, while there was no yield response when phosphate fertilizer rate increased. The total P in rape shoot and root increased gradually with the increase of phosphate fertilizer rate, but the total N, K remained unchanged. Phosphorus was absorbed luxuriously with excessive rate of phosphate fertilizer. The total Ca, Mg, Zn contents of shoot decreased, while total Fe content increased first and then decreased with the increasing application rate of phosphate fertilizer. There was a negative correlation between the contents of total P and Ca, Zn in rape shoots. The total Ca, Mg contents of rape root did not change with the increasing application rate of phosphate fertilizer, while the total Zn, Fe decreased significantly.
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