土壤是农业生产的自然资源。各种耕作首先是改变土壤的紧实度,从而影响土壤的其他理、化及生物性况,为作物生育创造适宜的土壤环境。土壤紧实度不同,作物的生育和产量结果很不相同。我院农业科技人员长期对土壤紧实度进行的深入研究表明:“机耕地小苗发锈减产的主要原因之一,就是土壤紧实度不够”。只要采取适当镇压措施, Soil is a natural resource for agricultural production. The first is to change the tillage of soil compaction, thus affecting the soil’s other physical and chemical and biological conditions, crop growth and create a suitable soil environment. Soil compaction is different and crop yields and yields are very different. A long-term study of soil compaction by agricultural scientists and technicians in our hospital shows that “one of the major causes of rust reduction and yield reduction in seedling cultivation is insufficient soil compaction.” As long as appropriate repression measures are taken,