不同深度土壤肥力指标与黄瓜根结线虫病相关性分析  

Correlation Between Soil Fertility and Root-knot Nematode Disease on Cucumbers

作　　者：王宏宝[1] 曹凯歌[1] 毛佳[1,2] 吴险平 赵桂东[1] WANG Hong-bao;CAO Kai-ge;MAO Jia;WU Xian-ping;ZHAO Gui-dong(Huaiyin Agricultural Science Research Institute,XuhuaiDistrict,Huai'an,Jiangsu 223001,China;Huai'an Agricultural Science and Technology Industrial Co.,Ltd.,Huai'an,Jiangsu 223001,China)

机构地区：[1]江苏徐淮地区淮阴农业科学研究所,江苏淮安223001 [2]淮安市农业科技实业总公司,江苏淮安223001

出　　处：《福建农业学报》2019年第10期1197-1202,共6页Fujian Journal of Agricultural Sciences

基　　金：淮安市自然科学研究计划项目（HAB201921）;江苏省环洪泽湖生态农业生物技术重点实验室项目（17HZHL016）;淮安市农业科学研究院科研发展基金(HNY201911)

摘　　要：【目的】了解设施黄瓜根结线虫病与不同深度土壤肥力指标相关性,为采用肥水管理等措施协同防控线虫病害提供参考。【方法】本试验通过测定设施黄瓜田中不同时期0~30 cm土层中pH值、速效氮、速效钾、全磷、全氮、有机质6个指标,研究黄瓜根结线虫病害与不同土层间土壤肥力指标变化的相关性。【结果】在定植128、188、218 d的3个时期,上层土速效氮、速效钾、全氮变化指标高于中下层土,指标差异达显著水平。相关性分析显示,土壤中全磷、速效钾、速效氮、pH的变化在不同土层中的相关性高,而土壤全氮变化在不同土层间的相关性低。土壤全磷变化显示,上中下各土层全磷变化与黄瓜病指呈显著负相关,相关系数为-0.842、-0.854、-0.869。土壤速效氮变化显示,上层土与黄瓜病指呈负相关,相关系数为-0.562。土壤速效钾、pH值、有机质变化显示,上层土3种肥力指标变化与黄瓜病指相关性低。【结论】土壤上中下各土层全磷含量变化和土壤中土层全氮含量变化2个肥力指标,与黄瓜根结线虫病情指数相关性高,达显著差异,土壤全磷和全氮含量变化对于指导黄瓜根结线虫病综合防控有一定参考价值。【Objective】 Correlation between the root-knot nematode disease on cucumber plants and the fertility of soils at different depths was investigated in a greenhouse to optimize the disease control.【Method】 Soil fertility indicators including pH, available nitrogen, available potassium, total phosphorus, total nitrogen, and organic matters from surface to 30 cm in depth during various cucumber growth stages were compared with occurrence of root-knot nematode disease on the plant for possible correlations.【 Result】 The available nitrogen, available potassium, and total nitrogen in the upper-layer of the soil were higher than those in the middle-or lower-layer in 128 d, 188 d, and 218 d after planting, with a statistic significance at P0.05 level. Significant correlations were found on the total phosphorus, available potassium, available nitrogen, and pH, but not on the total nitrogen, in the soils at different depths. The total phosphorus in soil significantly inversely correlated to the disease on the cucumber plants with a correlation coefficient of-0.842 for the upper-layer,-0.854 for the middle-layer, and-0.869 for the lower-layer. On the available nitrogen, an inversed correlation was found between that in the upper-layer and the disease on the plants with a coefficient of-0.562. No significant correlation existed between the disease and the available potassium and pH relating to the upper-layer soil.【Conclusion】 The total phosphorus and nitrogen in the soil highly correlated with the root-knot nematode disease and were considered relevant in preventing and controlling the disease on cucumbers.

关 键 词：土壤肥力 根结线虫 设施黄瓜 

分 类 号：S435[农业科学—农业昆虫与害虫防治]