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- Title
中国小麦生产的磷肥用量优化潜力及其对产量、籽粒营养和环境效应的影响.
- Authors
李顺晋; 安雨丽; 崔玉涛; 李浩然; 陈新平; 张伟
- Abstract
In order to explore the effects of phosphorus (P) fertilizer application on wheat yield, ecological environment and human nutrition health in China, a meta-analysis was conducted by collecting published literatures to evaluate the contribution of P input to wheat yield, grain zinc (Zn) nutrition and ecological environment by using environmental energy analysis and Zn absorption model. It was shown that the application of P fertilizer averagely increased wheat yield by 21% on the national scale compared to no P applied, and the threshold of P input (based on P2O5, the same as below) for high yield production of wheat was 58.9 kg·hm-2. Different regions had different thresholds due to various soil conditions and climatic factors. The threshold of P input in north China, northwest China, the middle and lower reaches of the Yangtze River, and the southwest China was 71.6, 58.1, 47.8, 60.0 kg·hm-2, respectively.Compared to the present P input, the application of threshold of P input could save P fertilizer in the wheat production system in China by 82.07×104 t per year, and it would decrease the comprehensive environmental cost more than 36 million yuan per year. In addition, the Zn mass fraction and bioavailability in wheat grain could be enhanced by 3.83 mg·kg-1 and 2.87 mg·d-1, respectively, under thethreshold of P input.
- Publication
Acta Agriculturae Zhejiangensis, 2021, Vol 33, Issue 8, p1358
- ISSN
1004-1524
- Publication type
Article
- DOI
10.3969/j.issn.1004-1524.2021.08.02