Application of Controlled-Release Nitrogen Fertilizer Decreased Methane Emission in Transgenic Rice from a Paddy Soil

Wenlin, Zhou; Yunsheng, Lou; Lixuan, Ren; Yan, Han; Yan, Meng; Lei, Wu

Application of Controlled-Release Nitrogen Fertilizer Decreased Methane Emission in Transgenic Rice from a Paddy Soil

2014

A pot experiment was conducted to investigate the effect of nitrogen fertilizer on CH₄ emission from a paddy soil under greenhouse conditions. The experiment was designed with two fertilizer types, i.e., controlled-release nitrogen fertilizer (CRNF) and urea (U), and two rice cultivars, i.e., herbicide-resistant transgenic rice (japonica line B2) and its parent conventional rice (japonica cv Xiushui 63). Compared with control (urea), one-time basal application of CRNF increased tiller number, plant height, biomass, and yield in rice and significantly decreased total CH₄ emission from the paddy soil. The total CH₄ emission was significantly lower from the transgenic cultivar than that from the conventional cultivar. It is suggested that CRNF and herbicide-resistant transgenic rice are helpful in mitigating CH₄ emission from the paddy soil.

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