Agriculture carried out in hot, humid regions where precipitation exceeds evapotranspiration. It is found mainly in the monsoon zones of Asia. It is contrasted with dryland agriculture in areas with an annual precipitation of 500 mm or less. In monsoon zones, the year is regularly divided into rainy and dry seasons, and the rainy season from May to September is hot and humid, allowing plants to grow extremely vigorously. The favorable conditions for plant growth mean that weeds also grow vigorously along with the crops, and sometimes the crops are overwhelmed by the weeds, resulting in no harvest at all. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
高温多湿で降水量が蒸発散量をうわまわる地帯で営まれる農業。主としてアジアのモンスーン地帯に分布する。年降水量500mm以下の地域の乾燥地農業と対比される。モンスーン地帯では1年が規則的に雨季と乾季に分かれるが,雨季に当たる5月から9月は高温多湿で植物の生育はきわめて旺盛である。植物の生育に好適であるということは,作物と同時に雑草の生育もまた旺盛となることを意味し,作物が雑草に圧倒されて収穫皆無になることすらある。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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