Application of Corn Straw and Woody Peat to Improve the Absorption and Utilization of 15N-Urea by Maize

Sustainability

Rui Ma¹  Cen Tan¹  Chenming Lin¹  Dong Wu¹  Yifeng Zhang¹  Sen Dou¹  Xin Liu¹  Shuai Xie¹  Mahmoud Gamal Mohamed Abd El-Rahim¹  Xianbao Yin¹ 

[1]College of Resource and Environmental Science, Jilin Agricultural University, Changchun 130118, China

关键词: corn straw;    woody peat;    ¹⁵N labeling technology;    yield;    fertilizer nitrogen whereabouts;   

DOI  :  10.3390/su14020820

来源: DOAJ

【 摘 要 】

Increasing nitrogen fertilizer use efficiency has become an environmental and economic demand in order to minimize losses of nitrogen and maximize the output from nitrogen added. The application of organic amendments with N fertilizers could be proposed as an important economic and environmental practice for improving N fertilizer use. A two-year field experiment was carried out using the ¹⁵N tracer technique to study the impact of corn straw and woody peat application on uptake and utilization of N fertilizer by maize plant. Three treatments were set up: CK (¹⁵N labeled urea alone), CS (¹⁵N labeled urea + crushed corn straw) and WP (¹⁵N labeled urea+ crushed woody peat). The results showed that, as compared to CK, both straw and peat treatments led to (i) an increase in yield of maize, ¹⁵N urea utilization rate, and residual ¹⁵N urea remained in soil by 11.20% and 19.47%, 18.62% and 58.99%, 41.77% and 59.45%, respectively, but (ii) a decrease in the total loss rate by 6.21% and 16.83% (p < 0.05), respectively over the two seasons. Moreover, the significantly highest effect was recorded with woody peat application rather than that with corn straw. Our study suggests that corn straw and woody peat can be used as organic fertilizers to increase maize yields, promote nitrogen fertilizer balance sheet, reduce the leaching of N fertilizer into the subsurface soil layer, and facilitate the further absorption and utilization of soil residual nitrogen. Therefore, the application of humified organic material play a crucial role in N utilization efficiency enhancement.

【 授权许可】

Unknown