金鱼草人工基质栽培中不同磷源效应的研究

EFFECTS OF VARIOUS PHOSPHORUS SOURCES ON FLOWER GROWTH IN THE ARTIFICIAL MEDIUM

在人工基质中施用不同磷肥对金鱼草生长、开花的影响,试验结果表明,金鱼草苗期吸磷量少,现蕾后吸磷量大增。在微酸性人工基质条件下,磷矿粉供磷效果极差,严重影响其开花;骨粉转化效果良好,可与过磷酸钙相当,后期开花效果还略有胜之;钙镁磷肥效果最佳,花多、花大、色艳。据此认为,在微酸性人工基质栽培花卉的营养配方中,用钙镁磷肥或骨粉配合一定量过磷酸钙作磷源是较为合适的。

Antirrhinum majus L. was grown in an artificial medium with applica- tions of rock phosphate, superphosphate, bone meal and calcium magnesium phosphate to study effects of various phosphorus sources on the growth and bloom of the flower and the absorption of phosphorus, nitrogen and potassium by the plant. The results indicate that phosphorus absorption by the plant is little in the seedling stage but increases significantly after flowering, phosphorus supply to the plant with rock phosphate is poor in the slight acidic artificial medium, resulting in phosphorus deficiency detering flowering. Phosphorus supply is good with bone meal whose effect is equivalent to that of superphosphate; the former is even better in the flowering stage. The best effect is calcium magnesium phosphate, which results in a linear increase of phosphorus absorption by the plant and produces more and bigger flowers with fresh and bright looking. It is suggested based on the experiment that bone meal or calcium magnesium phosphate together with a proper amount of superphosphate would be a suitable source of phosphorus for flower growth in the slight acidic artificial medium.