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Yield, nitrogen use efficiency and balance response to thirty-five years of fertilization in paddy rice-upland wheat cropping system

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Figure

Table 1. Application amount of mineral fertilizers and manure from 1981 to 2015
Figure 1. (a) Rice and (b) wheat grain yield in different fertilization treatments during thirty-five years periodsFertilization year
Figure 2. (a) Rice and (b) wheat nitrogen (N) uptake amount in different fertilization treatments during thirty-1982
Figure 3. (a) Rice and (b) wheat nitrogen (N) use efficiency in different fertilization treatments during thirty-five years periods–20120198219861990199419982002Control2006N20102014Fertilization year NP
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