测土配方施肥指标体系构建——以四川泸县玉米为例

Establishing soil testing and fertilization recommendation index——A case study of corn of Lu County in Sichuan Province

测土配方施肥的技术核心是指标体系,而测试方法的筛选、丰缺指标的建立以及推荐施肥量的确定是建立指标体系的三个重要环节。本文以四川泸县为例,根据当地玉米作物田间试验数据资料,以及高产、经济施肥经验,结合作物的需肥特性和土壤供肥能力,分析研究了泸县粮食作物玉米施肥指标体系,完成了泸县玉米施肥分区,并建立县级耕地资源数据库和耕地资源管理信息系统,编绘土壤养分图等数字化图件。研究结果对促进粮食节本增效、保护农业生态环境、保证粮食安全具有重要意义。

The core technology of soil testing and formulated fertilization is the index system,and the test method selection,abundance and deficiency index of the building and the amount of fertilizer recommendation were three important aspects in establishing the index system.A case study of corn was taken in Lu County in Sichuan Province,according to data on corn crop field trials,as well as high-yield,economic fertilization experience,combined with the fertilizer requirements of crops and soil fertility,the fertilization index system of Lu County maize was analyzed,while we completed fertilizer application partition of Lu County maize,established the county-level land resource database and land resources management information system,at last the digital maps of soil nutrient maps were compilated.The results were of great significance to promote the efficiency,protection of agricultural ecological environment and food security.