施氮量和CAU31系列控释肥对矮牵牛生长和观赏品质的影响

通过合理的施肥措施,塑造理想的株型结构、增加开花数和延长花卉观赏期是花卉栽培实践和理论研究中的热点问题之一。通过盆栽试验,研究不同施氮量和同一施氮量下不同控释肥类型对矮牵牛生长和观赏品质的影响。结果表明:施氮量(N)200mg/kg基质为矮牵牛的合理施氮量;中国农业大学资源与环境学院花卉营养课题组所研制的CAU31系列控释肥,能明显促进矮牵牛生长,提高矮牵牛观赏品质;与含氮量相同多次施入的速效肥相比,一次性施入的控释肥对矮牵牛生长和观赏品质具有同样甚至更好的效果,达到了省时省工的目的。

The growth and ornamental quality of petunia affected by the nitrogen fertilizer amount and the different kinds of controlled release of fertilizers

One of the focus issues in floriculture field is how to build up favorable plant morphology, increase the quantity of blooming flowers and extend the florescence by suitable fertilization. Pot experiments were carried out for investigating the effect of different nitrogen amount and different kinds of controlled release of fertilizers with equal amount on the growth and ornamental quality of petunia. The results showed that the nitrogen amount of 200 mg/kg was thought to be optimal for the growth of petunia; Both the growth and the ornamental quality of petunia were distinctly improved with CAU31 controlled release of fertilizers, made by College of Resource and Environmental Science, China Agricultural University. Compared with the conventional water-soluble fertilizers, controlled release of fertilizers could get even better effect on the growth and ornamental quality of petunia, consequently saving time and human resource.