Assessment of Yield and Nitrogen Utilization of the Mixed CRU and Urea in Wheat–Maize Production in a 5-Year Field Trial

To identify the general pattern of impact application mixed controlled-release urea (CRU) with (C-U) on grain yield, plant characteristics, NUE and soil nitrogen contents in wheat–maize production, a 5-year field trial three release longevity four ratios CRU C-U common alone (U) was carried out North China Plain. Results meta-analysis revealed that had significant effects yield NO3−-N production positively ratio CRU-N C-U. The 60 d or 90 for wheat maize best overall effects, while treatment 30 inhibitory effect. For maize, 30% largest increase rate 1000-grain weight, height, dry weight by 5.13%, 1.61%, 3.70%, 11.33%, 8.63%, respectively, 40% reduction NO3−-N. wheat, effect sterile spikelet number, 4.45%, −9.76%, −8.04%, respectively. conclude, use appropriate has great potential to proliferate yields reduce fertilizer loss especially not only provides an effective generic methodology agriculture improve measures but also ensures profitability.