论文部分内容阅读
“3414”实验是获得吉林省安图地区最佳施肥量、施肥比例、施肥时期、施肥方法的根本途径,也是筛选、验证土壤养分测试方法、建立施肥指标体系的根本环节。通过田间实验,可以掌握各个施肥单元不同作物优化施肥数量、基肥和追肥分配比例、施肥时期及施肥方法;摸清土壤养分校正系数、土壤供肥能力、不同作物养分吸收量和肥料利用率等基本参数;构建作物施肥模型,为施肥分区和肥料配方提供实验数据。
“3414 ” experiment is the basic way to get the best fertilization rate, fertilization proportion, fertilization period and fertilization method in Antu area of Jilin Province. It is also the fundamental link of screening and verifying soil nutrient testing method and establishing fertilization index system. Through field experiments, we can know the optimum amount of fertilizers, distribution ratio of basal fertilizer and top dressing, fertilization period and fertilization method of different fertilizers units in different fertilization units; found the basic principles of soil nutrient correction coefficient, soil fertility, nutrient uptake of different crops and fertilizer utilization rate Parameters; build fertilization model for the fertilization zoning and fertilizer formula to provide experimental data.