FIELD: agriculture.
SUBSTANCE: invention concerns agriculture and can be applied to improve hydrological effect of closed vacuum drain. Method includes sowing perfoliate silphium in a strip between drains. Prior to sowing of perfoliate silphium, strip of soil along closed header is exposed to deep tillage for 0.6…0.8 m. As post-effect of deep tillage expires, repeated deep tillage of soil is carried out along closed header.
EFFECT: improved efficiency of vacuum drain action in damp zone.
1 dwg, 1 ex
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