ABSTRACT

Belowground interactions are crucial in the over-yielding of intercropping systems. However, the effects of belowground interactions on the yields of intercrops in faba bean-maize relay intercropping system are still unclear. In this study, field and pot experiments were conducted, and the biomass, yield, nutrient accumulation and photosynthetic parameters of intercrops were determined to analyze the effects of belowground interactions and relay intercropping. In the field experiments, the yield and biomass of faba bean and maize in the relay intercropping system was significantly increased compared with the monocropping. The relay intercropping promoted the accumulation of nitrogen and phosphorus in faba bean and maize but showed no effect on potassium accumulation. In the pot experiments, no barrier treatment significantly increased the nutrient accumulation of faba bean and maize, nutrient content in soil, photosynthesis, maize, yield, biomass, plant height, 100-grain weight of faba bean and maize. In summary, relay intercropping increased nutrient accumulation, photosynthesis, biomass and yield of crops. The belowground interactions of intercrops could provide good soil fertility conditions for crop growth. The results can provide references for high-yield cultivation of crops and sustainable development of agriculture.

摘要

地下相互作用对于间作系统的超产至关重要。然而，地下相互作用对蚕豆-玉米套作系统间作作物产量的影响仍不清楚。本研究通过大田和盆栽试验，测定间作作物的生物量、产量、养分积累和光合参数，分析地下互作和套作间作的效果。在田间试验中，套作蚕豆和玉米的产量和生物量与单作相比有显着提高。套作促进了蚕豆和玉米氮、磷的积累，但对钾的积累没有影响。在盆栽实验中，无屏障处理显着提高了蚕豆和玉米养分积累、土壤养分含量、光合作用、玉米产量、生物量、株高、蚕豆和玉米百粒重。总之，间作套种增加了作物的养分积累、光合作用、生物量和产量。间作作物的地下相互作用可为作物生长提供良好的土壤肥力条件。研究结果可为农作物高产栽培和农业可持续发展提供参考。间作作物的地下相互作用可为作物生长提供良好的土壤肥力条件。研究结果可为农作物高产栽培和农业可持续发展提供参考。间作作物的地下相互作用可为作物生长提供良好的土壤肥力条件。研究结果可为农作物高产栽培和农业可持续发展提供参考。