库拉索芦荟根腐病与土壤—植株养分状况的关系研究  

Study on the Relationship between Root-rot Incidence and Soil-plant Nutrient Status for Aloe vera (L.) Burm. f.

作　　者：何忠俊[1] 周琼[1] 张忠萍[1] 董艳[1] 范茂攀[1] 洪常青[1] 

机构地区：[1]云南农业大学资源与环境学院,云南昆明650201

出　　处：《云南农业大学学报（自然科学版）》2009年第2期255-259,291,共6页Journal of Yunnan Agricultural University:Natural Science

基　　金：云南省教育厅科研基金重点项目(5Z0232B)

摘　　要：调查了云南元江芦荟基地施肥状况、根腐病发病率,并采集和测定了叶片和根际土壤样品中营养元素含量。调查分析结果显示,库拉索芦荟根腐病发病率与土壤中速效磷含量呈显著的正相关,与土壤中其它速效养分以及芦荟叶片养分含量无显著的相关性。与海南健康库拉索芦荟叶片及其根际土壤养分状况相比,元江库拉索芦荟病株根际土壤中碱解氮、有机质、速效钾、速效钙、速效镁、速效硼含量,以及叶片中钾、硼含量较低,但其根际土壤中速效磷含量较高。元江库拉索芦荟根腐病可能主要与施肥不合理,大量偏施磷肥和糖泥引起的土壤—植株养分失调、病菌滋生和抵抗力下降有关。The fertilization situation and root-rot incidence of Aloe vera （ L. ） Burm. f. were investigated in Yuanjiang County of Yunnan province, the samples of leaf and rhizosphere soil were collected and tested. The result showed that there was significantly positive correlation between root-rot incidence and available soil phosphorous, and no obvious correlation between root-rot incidence and other nutrients in soil and leaf. Moreover, the contents of alkaline N, organic matter, available K, available Ca, available Mg, available B in rhizosphere soil , and K and B in leaf were much lower, compared with healthy plants and their rhizosphere soil nutrition status in Hainan province, but the available phosphorous was much higher in rhizosphere soil in Yuanjiang. The possible reasons resulting in severe aloe root -rot in Yuanjiang might be nutrient disorder in soil and plant, disease multiplication and resistance reduction because of irrational fertilization, over-application of phosphorous and sugar refinery silt.

关 键 词：库拉索芦荟 根腐病 土壤速效养分 叶片营养元素 

分 类 号：S682.33[农业科学—观赏园艺] S436.8[农业科学—园艺学]