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近年来,我区通过开展了大规模的农田基本建设,改革耕作制度,增加复种指数,扩大粮食作物的三熟面积和推广耐肥高产良种,促进了农业生产的发展和作物产量的提高。但是,由于土地资源利用不合理,随着生产的不断发展,改制年限的增长,用地和养地的矛盾越来越突出,生态系统的平衡受到了人为的破坏。从而使土壤性质恶化,肥力下降。影响了农业产量的迅速提高,对实现农业现代化很不利,必须引起足够的重视。 一、土壤性质恶化,肥力下降的表现 1974年以来,我们在不同类型地区,不同土壤设
In recent years, the district has promoted the development of agricultural production and the improvement of crop yield by carrying out large-scale farmland infrastructures, reforming the farming system, increasing the multiple cropping index, expanding the area of third-crop of food crops and promoting high-yielding and high-yielding varieties. However, due to the unreasonable utilization of land resources, with the continuous development of production and the increase of the number of years of reform, the contradiction between land use and land use has become more and more prominent, and the balance of the ecosystem has been artificially destroyed. So that the deterioration of soil properties, fertility decline. Affected the rapid increase of agricultural output and was very unfavorable to the modernization of agriculture and must be given enough attention. First, deterioration of soil properties, decline in fertility performance Since 1974, we in different types of regions, different soil set