沼肥在园林植物种植中不同施用模式的研究

为了解决沼肥在园林植物种植中的清洁、高效施用问题，本研究以园林植物菊花和果桑为试验材料，采用盆栽试验分别从沼液净化处理、沼液最佳喷施和园林生土熟化3个方面进行了研究。试验结果表明：（1）确定孔径3 cm且过滤堆置厚度50 cm的核桃壳为沼液净化最佳处理。（2）菊花喷施60%的浓度沼液间隔6天，果桑喷施60%的浓度沼液间隔10天为最佳喷施处理。（3）每1 t园林生土中底施66.7 L沼肥（沼液+沼渣），定植后每隔5天喷施33.3 L沼液（浓度为60%），经50天后即可使生土熟化，供栽植园林植物所需。

The Study on Different Application Modes of Biogas Fertilizer in the Garden Plants

This study is done in order to apply biogas fertilizer cleanly and efficiently in planting garden flowers. It comprised three sub-tests, namely biogas slurry purification, optimal time of biogas slurry spraying and garden raw soil＇ s aging. And its material was chrysanthemum and fruit mulberry planted in pots. The results showed as follows： （1） the optimal deal way was walnut shells filter with 3 cm diameter and 50 cm thickness. （2） The optimal concentration of spraying foliar was 60% concentration, and the optimal time was 7 days to chrysanthemum and it was 1 ldays to fruit mulberry. （3） The optimal quantity to garden raw soil＇s aging was 66.7 L/t. The way was adding 66.7 L biogas fertilizer （biogas slurry ＋ biogas residue） in 1 t garden raw soil before planting, spraying 33.3 L biogas slurry （concentration 60%） every 6 days after planting, the raw soil maturation can mature and fit for planting garden plants after 50 days.