The Response of Nutrient Uptake, Photosynthesis and Yield of Tomato to Biochar Addition under Reduced Nitrogen Application

Tomato is an important economic crop that widely consumed worldwide. production mainly limited by the use of nitrogen fertilizer, sunlight, soil and water conditions. Biochar one amendments, it recognized as a promising practice for improving in agriculture. The effect biochar on photosynthetic traits tomato yield under reduced fertilizer application still not well understood. objective this research to investigate influence photosynthesis from perspectives nutrient uptake plants (nitrogen phosphorus), leaf pigment gas exchange parameters. Two-year greenhouse experiments containing six levels (0, 10, 30, 50, 70, 90 t ha?1) two rates (190 250 kg were conducted. Compared with C0, C50 significantly improved (74–80%) phosphorus (76–95%) further enhanced leaves (net rate (Pn), stomatal conductance (gs), transpiration (Tr) chlorophyll (2–60%), which lead highest gains (more than 50%) even when applied was (from ha?1 190 ha?1). had linear correlation total accumulation yield. results will enhance our understandings about be importance practical agricultural management.