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ប្រភេទកសិវិទ្យា: អាហារូបត្ថម្ភនិងរបបអាហារ​ ប្រទេស: សកល ភាសា: ភាសាអង់គ្លេស

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  • Introduction to Soil Improvement

    The presentation outlines natural methods to improve soil quality. It focuses on using organic matter, microorganisms, and rice husk charcoal to create a healthy, aggregated...