试验因子对土壤水盐动态的权重性分析和试验结果指标的综合因素分析；
Weighing analysis of the soil water and salt movements by the experimental factors and integrated factor analysis of the experiment results and indexes were performed.
影响土壤侵蚀的因素很多，而降雨是侵蚀产沙的直接动力因子。
There are many factors to affect the soil erosion, while the rain is direct one for the appearance of sand by erosion.
影响烟叶烘烤特性的因素很多，如遗传因子、气候因素、土壤类型、栽培管理措施、烟叶部位和成熟度等。
It were affected by genetic factors, climatic factors, soil type, fertilization and other cultivation and management, leaf position and maturity etc.
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