摘要
耕地资源持续利用是农业和国民经济发展的基础。我国耕地资源的现状为 :人均耕地少、优质耕地少、耕地后备资源少、耕地退化严重、耕地浪费严重和耕地保护措施不力 ;耕地水土流失范围广、面积大 ,人为因素是加剧耕地水土流失的根本原因 ;水土流失导致耕地数量减少、质量下降 ,严重制约粮食生产的发展 ;加强水土保持 ,可防止耕地数量减少、质量下降 ,且能有效地改善耕地环境状况 。
The sustainable use of cultivated land resource is the development foundation of agriculture and national economy. In China, the universal existing problems of the cultivated land resource are: per capita and high grade cultivated land are less, the cultivated land reserves are deficient, cultivated land deteriorates and wastes seriously, the conservancy measures have little effectiveness; the soil and water loss is widespread on cultivated land, artificial factors are the basic reason which aggravate it; soil and water loss leads to the quantity of cultivated land decrease, make quality of cultivated land descend and seriously restrict the food production. So reinforcing soil and water conservation is the effective measurement that carries through the sustainable use of cultivated land resources, which not only can prevent the quantity of cultivated land from decreasing, prevent the quality of cultivated land from descending, but also can improve the environmental conditions efficiently.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2003年第6期285-288,共4页
Transactions of the Chinese Society of Agricultural Engineering
关键词
水土保持
耕地资源
水土流失
持续利用
soil and water conservation
tilled land resources
soil and water loss
sustainable use
