持续农业。当前，人们为发展农业总是大量使用化肥和农药，毁林开荒，导致了农田土质退化、水土流失、生物资源大量减少等不良后果，从而严重影响了农业长期发展的基础。因此，有关专家认为，今后在发展农业的同时，必须保持土地、水、动植物遗传资源，不至于造成自然环境退化 Continuous agriculture. At present, people always use large quantities of chemical fertilizers and pesticides for development of agriculture and deforested their land, resulting in adverse consequences such as soil degradation, soil erosion and biological resources reduction. This has seriously affected the foundation of long-term agricultural development. Therefore, relevant experts believe that in the future while developing agriculture, it is necessary to maintain the genetic resources of land, water, animals, plants and animals without degenerating the natural environment