DMPP and Polymer-Coated Urea Promoted Growth and Increased Yield of Greenhouse Tomatoes

Improvements in nitrogen (N) use efficiency reduce stress on the environment and improve tomato production. A two-year trial was conducted greenhouse tomatoes with a split-plot design, which one factor N application rate (150 kg·ha?1, N1; 200 N2; 250 N3) two other factors were type of urea applied (urea, T1; slow-release (polymer-coated) urea, T2, nitrification inhibitors (3,4-dimethylpyrazole phosphate, DMPP) + T3); no fertilizer control. The effects root morphology indexes, growth photosynthetic parameters, yield (Y), water (WUE), agronomic (NAE) investigated. results show that an appropriate (200 kg·ha?1) can net (Pn). With T3, Y WUE first increased then decreased as increased, but T1 increased. NAE significantly lower N3 than N2. growth, plant Pn, Y, WUE, improved T2 T3 compared to T1. These findings be used promote conservation increase facility agriculture crops.