黑土地保护性耕作技术应用效果及推广策略

Application Effect and Promotion Strategy of Conservation Tillage Technology about Black Soil

传统高强度的土壤耕作使黑土地土壤肥力和有机质含量不断下降,理化性状与生态功能降低,严重影响我国粮食安全与农业可持续发展。辽宁省义县开展了3种保护性耕作模式的试验示范对比研究,结果表明,与未采取保护性耕作技术的对照田相比,保护性耕作技术在减轻土壤风蚀水蚀、培肥地力和提高农作物产量方面具有明显的优势。同时,分析了保护性耕作技术推广应用中存在的问题,并提出推广策略。

Traditional high-intensity soil cultivation has made soil fertility and organic matter content of black land decrease continuously,physical and chemical properties and ecological functions were reduced. It seriously affected food security and sustainable development of agriculture in China. Yixian County of Liaoning Province had carried out a comparative study of three conservation tillage models. Results showed that conservation tillage technology had obvious advantages in reducing soil wind,water erosion,improving soil fertility and increasing crop yield compared with control field without conservation tillage technology. At the same time,existing problems in popularization and application of conservation tillage technology were analyzed,and promotion strategies were put forward.