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用泥炭、河砂和煤渣分别组成花卉营养土的试验表明,泥炭与河砂以75∶25或50∶50容积比例组成的基质对黄菊和万寿菊的效果最好,肥料效率也最高,煤渣的效果明显低于河砂;从组分的细度看,河砂以粒径2—0.15mm最好,煤渣在使用前除去过细部分会大大提高其利用价值。花卉对栽培基质的通气性要求比一般作物高,生长前期通气孔度达38—46％,以后下降为28—33％。因而必须注意植前营养土的合理调制,以获得良好的物理性。
The experiment of using peat, river sand and cinder respectively to make up the flower nutrition soil shows that the matrix composed of peat and river sand in the volume ratio of 75:25 or 50:50 has the best effect on Huangju and marigold, and the fertilizer efficiency is the highest, The effect is obviously lower than that of river sand. From the fineness of the components, river sand is the best with the grain size of 2-0.15mm, and removing excessively small part before use can greatly increase its utilization value. Flowers on the cultivation of the air permeability of the substrate than the average requirement of high, pre-growth vent 38-46%, after falling to 28-33%. Therefore, we must pay attention to the rational modulation of pre-vegetative soil in order to obtain good physical properties.