Soil Erosion And Soil Conservation
Akopọ
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.
Awọn Afojusun
- (a) describe types of soil erosion, their causes, agents, prevention and control.
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Soil Erosion And Soil Conservation. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- 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
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Awọn Iwe Itọsọna Ti a Gba Nimọran
Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Soil Erosion And Soil Conservation? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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