Digested slurry analysis for utilization based on irrigated crop water demand

To rationally utilize digested slurry, and thereby promote the integrated development of planting breeding in industry, water-fertilizer requirement analysis typical winter wheat-summer corn rotation tillage model Zhengzhou was completed based on water/nutrient crops. The results showed that water demand effective rainfall wheat during whole growth period were 492 190 mm, application amount slurry 3090 m³. N, P, K provided 3600, 197, 1310 kg, respectively, which exceeded normal nutrient wheat. During summer corn, 354 290 763 890, 48.6, 324 respectively. N while P insufficient. Therefore, can provide full requirements season Zhengzhou, fertilizer should be added when applying season. If long-term application, excessive loss may cause non-point source pollution.