Publications by authors named "Zheng Ping Peng"
[Response of root dynamics to nitrogen addition and the influencing factors in a Tibetan alpine steppe, China].
Ying Yong Sheng Tai Xue Bao
September 2021
A field manipulative experiment was carried out during 2015 and 2016 to examine the changes and influencing factors of root production, turnover rate, and standing crop under different nitrogen (N) addition levels, ., 0, 1, 2, 4, 8 and 16 g N·m·a, in a Tibetan alpine steppe. The results showed that root production and standing crop decreased linearly or exponentially with increasing N addition rates.
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- A field experiment was conducted to assess the impact of various nitrapyrin-N fertilizer application rates (0, 180, 270, 360 kg N·hm) on soil NO emission and nitrogen utilization in summer maize.
- The study found that soil NO emissions peaked during specific growth periods and after fertilization events, with higher N rates generally leading to increased maize yields.
- The optimal fertilizer rate for maximizing yield and efficiency while minimizing nitrogen loss and emissions was identified as 270 kg N·hm, resulting in significant improvements in crop nitrogen uptake and financial returns.
Aiming at the problems of excessive and unreasonable fertilizer application, lower nitrogen use efficiency, increasing N2O emission from soil and fertilizer in current intensified agricultural productions, a field experiment was conducted to study the effects of dicyandiamide (DCD) combined with nitrogen fertilizer application at different levels, i.e., 150, 225, 300 kg .
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