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根据全国统一部署,我区各县(市)自1979年开始,分期分批开展了第二次土壤普查。到1984年底,全区19个县(市)的土壤普查工作已基本结束。这次土壤普查面积共51700平方公里,提供各种专业图件261种。通过土壤普查基本查清了我区的土壤和土地资源,掌握了各类土壤的发生、分布、特点和肥力状况。查明了影响农林牧业生产发展的主要土壤障碍因素。针对生产中的主要土壤问题,进行了农家肥料的质量、引黄灌区地下水与土壤盐化、山区的土壤侵蚀与沙化、苦水灌溉对土壤盐化的影响等专题调研工作,提出了解决问题的建议和措施。在土壤普查过程中,科技人员引进和创造了很多先进技术和方法,如引用航片进行调查制图,灌区采用随机抽样方法
According to the unified national deployment, counties (cities) in our region started the second soil census by stages and in batches since 1979. By the end of 1984, the work of soil census in 19 counties (cities) in the entire region has basically ended. The soil census area of a total of 51,700 square kilometers, 261 kinds of professional maps. Through the soil survey, we basically found out the soil and land resources in our district and mastered the occurrence, distribution, characteristics and fertility status of various types of soils. Identified the major soil barriers that affect the development of agriculture, forestry and animal husbandry. In view of the main soil problems in production, the author carried out the special investigations on the quality of farmhouse fertilizers, groundwater and soil salinization in the Yellow River irrigated areas, soil erosion and desertification in mountainous areas, and the effects of bitter irrigation on soil salinization, and put forward suggestions on how to solve the problems And measures. During the process of soil census, many advanced technologies and methods were introduced and created by scientists and technicians. For example, aerial photographs were used for surveying and mapping. Irrigation districts adopted a random sampling method