关键词: 磷酸氢二铵, 磷酸氢二铵, 尿素, 造纸法再造烟叶, 热解行为, 羰基化合物

Abstract: Under the farming system with high investment and high production, we studied the effects of phosphorus application on tomato yield, in order to further found out the cultivation theory basis that could obtain the phosphate fertilizer optimal dosage. By randomized block design, the yield response of tomato to phosphate fertilizer was studied with cucumber-tomato rotation in a long-term experiment. The effect of phosphate fertilizer on soil phosphorus (Olsen-P), phosphorus utilization and fruit quality were also investigated under different rates of phosphate fertilizer. Results showed that application of phosphate fertilizer increased the yield, dry matter quantity, total P content, P cumulant content and soluble solid content of tomato fruit, first increasing and then decreasing with the increase of phosphate fertilizer rate. P fertilization increased the dry matter quantity, total P content and P cumulant content of tomato plant. The nitrate content of tomato fruit, P Apparent recovery efficiency of tomato plant was decreased gradually with the increase of phosphate fertilizer rate. When the P2O5 rate was above 225 mg/hm2, the Olsen-P in 0~20cm soil profile was increased gradually with the increase of phosphate fertilizer rate and planting season, and thus, increased the leaching risk. We put forward the corresponding phosphate fertilizer rate recommendations according to the study goals.