水土保持措施对坡地水土保持效益的影响

Influence of Soil and Water Conservation Measures on Soil and Water Conservation Benefits of Slope Land

水土保持综合效益的研究是土壤资源可持续发展的基础,采用野外红壤坡地现场试验的研究方法,分析不同降雨条件下,不同水土保持措施对红壤坡地柑橘园的产流产沙、养分流失的影响,主要得到以下结论:减流效益大小依次为:植物试验组(ZW1)>植物试验组(ZW2)>植物+工程试验组>作物试验组>工程试验组;不同降雨条件下的减沙效益大小依次为:植物试验组(ZW1)>植物试验组(ZW2)>植物+工程试验组>作物试验组>工程试验组;不同试验组减氮效益大小依次为:植物试验组>作物试验组>植物+工程试验组>工程试验组,且随着降雨量增大,减氮效益逐渐增大;不同试验组减磷效益大小依次为:植物+工程试验组>植物试验组>作物试验组>工程试验组,且随着降雨量增大,减氮效益逐渐减小。此项研究的成果可为提高水土保持质量、环境安全问题提供参考。

The research on the comprehensive benefits of soil and water conservation is the basis for the sustainable development of soil resources. In this study, the research method of field experiments on red soil slopes was used to analyze the effects of different water and soil conservation measures on the yield, sand production, nutrients, and nutrients of citrus orchards on red soil slopes under different rainfall conditions. The main conclusions were as follows: the magnitude of the flow reduction benefit is in the following order:plant test group(ZW1) >plant test group(ZW2) >plant + engineering test group>crop test group>engineering test group. The order of sediment reduction benefit under different rainfall conditions was: plant test group(ZW1)>plant test group(ZW2)>plant+engineering test group>crop test group>engineering test group. The order of nitrogen reduction benefits of different test groups was: plant test group>crop test group>plant+engineering test group>engineering test group, and with the increase of rainfall, the nitrogen reduction benefit gradually increased. The order of phosphorus reduction benefit in different test groups was: plant + engineering test group>plant test group>crop test group >Engineering test group, and with the increase of rainfall, the nitrogen reduction benefit gradually decreased.The research results of this study can provide reference for improving the quality of soil and water conservation and environmental safety.