• Based on experiments of planting by stages, month average temperature and month rainfall depth showed very significant effects on damaging rates of termite on young Eucalyptus stand.

    分期造林试验结果表明平均气温、月降雨量桉树幼林白蚁为害影响显著

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  • The relations between rainfalls, contents of soil water before rainfall, time of infiltration and depth of infiltration were described.

    阐述降雨量、前期土壤水分含量和下渗历时水分下渗深度关系

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  • These were tree age, stand density, resin tapping, rainfall, temperature, clay soil, stone soil, soil depth, water logging, and other diseases and insect pests.

    它们树龄、林分密度、割降雨量温度粘性石砾土、土层瘠薄、积水、病虫危害。

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  • The results shows, the relationship between individual rainfall runoff depth and it's sediment yield is very close.

    结果表明次降雨径流与其对应所产生侵蚀量关系非常密切

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  • The infiltration rate is intensively affected by rainfall intensity, and there exists a linear relation between the depth of infiltration and precipitation and rainfall intensity.

    入渗深度降雨量降雨强度之间存在线性关系,土壤渗透能力随土壤剖面初始含水量增加减小,土壤稳定入渗速率的时间趋于缩短。

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  • The influence caused irrigation (rainfall) is to each layer soil matric potential reduces with depth of increment.

    灌水(降雨)土壤基质影响深度增加而减小

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  • Rill width and depth become bigger with rainfall intensity, erosion amount promptly enhances after rill appears, accounts for 91%.

    宽度深度随的增大而增大,产生细沟侵蚀量迅速增大,最大侵蚀量的91%。

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  • Rill width and depth become bigger with rainfall intensity, erosion amount promptly enhances after rill appears, accounts for 91%.

    宽度深度随的增大而增大,产生细沟侵蚀量迅速增大,最大侵蚀量的91%。

    youdao

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