Plant transpiration in a maize/soybean intercropping system measured with heat balance method. Differences in maize photosynthetic characteristics and nitrogen regulation effects in maize/soybean and maize/sweet potato relay strip intercropping A biomass accumulation model for maize/soybean intercropping system Effects of different cropping modes on crop root growth, yield, and rhizosphere soil microbes’ number.  Production and N nutrient performance of wheat-maize-soybean relay strip intercropping system and evaluation of interspecies competition Effects of nitrogen strategies on carbon and nitrogen metabolism of maize in wheat/maize/soybean relay intercropping system Nitrogen accumulation, allocation and translocation in wheat/maize/soybean relay intercropping system Effect of Wheat/Maize/Soybean and Wheat/Maize/Sweet Potato Relay Strip Intercropping on Bacterial Community Diversity of Rhizosphere Soil and Nitrogen Uptake of Crops Phosphorus Uptake and Utilization of Maize and Interspecies Interactions in Maize/Soybean and Maize/Sweet Potato Relay Intercropping Systems Effects of phosphorus application on changes in soil phosphorus under wheat/maize/soybean strip relay intercropping system The Reciprocity and Nitrogen Transfer in Inter-Cropping and Inter-Planting System of "Wheat/Maize/Soybean" Differences of dry matter accumulation and distribution of maize and their responses to nitrogen fertilization in maize/soybean and maize/sweet potato relay intercropping systems Effect of Wheat/Maize/Soybean and Wheat/Maize/Sweet Potato Relay Strip Intercropping on Soil Nitrogen Content and Nitrogen Transfer Differences of Nitrogen Uptake and Utilization and Nitrogen Regulation Effects in Maize between Maize/Soybean and Maize/Sweet Potato Relay Intercropping Systems 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 Effects of nitrogen management on maize nitrogen utilization and residual nitrate nitrogen in soil under maize/soybean and maize/sweet potato relay strip intercropping systems. Effects of different planting modes on soil nitrogen transformation and related enzyme activities. Study on yield and differences of nutrient absorptions of maize in wheat/maize/soybean and wheat/maize/sweet potato relay intercropping systems Effects of straw mulching on photosynthetic characteristics and yield of intercropped maize