Soil Erosion And Soil Conservation
Bayani Gaba-gaba
Topsoil is a farmer's working capital. It holds the nutrients, the water and the living organisms that crops depend on, yet a single heavy storm on a bare hillside can strip away a layer that took centuries to form. Once the topsoil has gone, yields fall, the land is harder to work and gullies can cut a field in two. Soil erosion is therefore one of the most serious threats to food production, and it is almost always made worse by the way land is farmed.
In this lesson you will learn how moving water and wind detach and carry soil away, why slopes and bare ground are so vulnerable, and how farmers fight back. You will study practical conservation measures, from terracing and contour ploughing to cover crops, mulching and windbreaks, and learn to explain not just what each one does but exactly how it protects the soil and the harvest.
Manufura
- (a) describe types of soil erosion, their causes, agents, prevention and control.
Takardar Darasi
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Nazarin Darasi
Barka da kammala darasi akan Soil Erosion And Soil Conservation. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- Which is the most severe form of water erosion? A. Splash erosion B. Sheet erosion C. Rill erosion D. Gully erosion Answer: D
- Soil erosion is best defined as: A. The build-up of nutrients in the topsoil B. The detachment and removal of topsoil by water or wind C. The breakdown of rock into soil D. The leaching of salts deep into the soil Answer: B
- Ploughing across a slope, along the contour, rather than up and down it is called: A. Strip cropping B. Terracing C. Contour ploughing D. Mulching Answer: C
- Which measure mainly reduces wind erosion of a bare, sandy field? A. Planting windbreaks B. Adding lime C. Deep ploughing up and down the slope D. Removing all plant cover Answer: A
- Which practice both protects the soil surface and adds organic matter as it rots? A. Overgrazing B. Mulching C. Leaving the field bare D. Burning the stubble Answer: B
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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