15N-isotope 第1页

The Reciprocity and Nitrogen Transfer in Inter-Cropping and Inter-Planting System of "Wheat/Maize/Soybean" Comparision of two methods used to study the biological nitrogen fixation and nitrogen transfer from peanut to rice in aerobic soil of intercropping system Analysis of the nitrogen uptake and utilization efficiency and N fertilizer residual effect in the wheat-maize-soybean and wheat-maize-sweet potato relay strip intercropping THE STUDY ON EFFECT OF ZEOLITE ON NITROGEN USE EFFICIENCY OF CORN BY ~(15)N-ISOTOPE DILUTION METHOD