怎样防止花卉盆土板结和碱化?
有些盆花土壤粘性较重,颗粒太细,缺乏有机质,浇水后易出现不渗水现象,干时易出现板结、龟裂,不利花卉生长。要防止这种现象的发生,可在盆土中掺入颗粒粗且含丰富腐殖质的土壤,如粗沙、锯末、厩肥土等。
多数花卉适宜中性或偏酸性的土壤,在种植花卉时应避免盆土出现碱化现象。
①新栽种或翻盆时选用偏酸性的培养土。
②定期翻盆换土,加入偏酸性基质,去掉碱化老土,也可防止土壤碱化。
③施肥时应多施有机肥料,少施化学肥料,减少盆土碱化现象发生机率。
④定期去掉表层土壤。一般盐碱会随水分蒸发聚集在盆土表面,去掉表土,可降低盆土碱化。
⑤尽量使用井水、河水浇花。北方自来水含钙离子多,可煮沸晾冷后再行使用。生长季节多浇水,可淋洗盐碱。
⑥定期加入酸性稀释液,可防止盆土碱化。
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