论文部分内容阅读
通过爆破成土和建立人工生态系统等一系列技术措施,跳越了土壤形成的自然过程和生态的进化过程,直接在裸露的低丘紫色砂页岩上因地制宜地建立了农-草和果-(农)-草人工复合生态系统。本文的研究表明,在人工生态系统重建之后,由于加入大量有机物和农家肥以及精细的耕作管理,土壤的肥力不断提高。主要表现在:(1)极显著提高了土壤有机质含量,其平均值由刚成土时的3.112g/kg增加到3年后的5.764g/kg。(2)土壤全氮量显著增加。(3)土壤中的有机磷、土壤水解性氮和土壤速效磷的含量极显著增加;(4)土壤各种微生物的数量都表现出逐年显著增加。
Through a series of technical measures such as blasting into soil and establishing artificial ecosystem, the process of natural evolution of soil and the evolution of ecology are skipped over. Directly on the exposed low-lying purple sandstone shale, agricultural-grass and fruit- (Agricultural) - grass artificial composite ecosystem. The research in this paper shows that soil fertility is continuously improved after the artificial ecosystem is rebuilt due to the addition of large amounts of organic matter and farmyard manure and fine tillage management. Mainly in: (1) significantly increased soil organic matter content, the average value increased from 3.112g / kg just after soil formation to 5.764g / kg after 3 years. (2) Soil total nitrogen increased significantly. (3) The contents of organic phosphorus, soil hydrolyzable nitrogen and soil available phosphorus increased significantly in the soil. (4) The quantity of various microorganisms in soil showed a significant increase year by year.