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双株栽培模式是辽宁省玉米生产的新型栽培模式,包括双株定向栽培模式和双株紧靠栽培模式。根据植物病害流行学原理,通过田间试验设计及人工接种技术,对双株定向栽培模式、双株紧靠栽培模式和常规栽培模式下玉米大斑病发生流行动态进行比较研究。调查研究发现,双株定向栽培模式和双株紧靠栽培模式的病情指数低于常规栽培模式。通过SPSS 11.5软件对比分析,Logistic模型适用于描述双株定向栽培模式、双株紧靠栽培模式和常规栽培模式下玉米大斑病流行时间动态。
Double cropping mode is a new type of cultivation mode of corn production in Liaoning Province, including double cropping and double cropping cultivation mode. According to the principle of plant disease epidemiology, the epidemiological studies on the occurrence of the maize leaf spot disease in the two-plant oriented cultivation mode, the double crop cultivation mode and the conventional cultivation mode were conducted through the field experiment design and artificial inoculation techniques. The investigation and study found that the disease index of double-cropped and double-cropped cultivation mode was lower than that of conventional cultivation mode. By SPSS 11.5 software comparative analysis, Logistic model is suitable for describing the dual strain directional cultivation mode, double strain close to the cultivation mode and the conventional cultivation mode corn leaf spot epidemic dynamics.