论文部分内容阅读
本试验是估计休闲和施用硝酸铵对春小麦吸收~(15)N肥料,土壤淋溶和~(15)N肥料回收的影响,并与未经休闲的连作地进行比较。研究在土壤和气候条件不同的两个地区进行。方法与材料相邻的田间小区设在博兹曼和威洛克雷克,其中的一个小区前一年已休闲,其余小区继续种作物。施肥前分析了土壤pH值(水∶土为2∶1)、导电率、醋酸铵浸提物、钙、镁、
This experiment is to evaluate the effects of recreational and application of ammonium nitrate on the recovery of ~ (15) N fertilizers, soil leaching and ~ (15) N fertilizers in spring wheat and to compare with non-recreational succession. The study was conducted in two regions with different soil and climatic conditions. METHODS AND MATERIALS Adjacent field plots were located in Bozeman and Willow Crack, one of which had been recreated the previous year and the remaining plots continued to plant crops. Before fertilization, soil pH (water: soil 2: 1), conductivity, ammonium acetate extract, calcium, magnesium,