Manure combined with chemical fertilizer increases rice productivity by improving soil health, post-anthesis biomass yield, and nitrogen metabolism

作者：Anas Iqbal, Liang He, Izhar Ali, Saif Ullah, Ahmad Khan, Aziz Khan, Kashif Akhtar, Shangqin Wei, Quan Zhao, Jing Zhang, Ligeng Jiang · 发表于：PLoS ONE · 年份：2020 · DOI：10.1371/journal.pone.0238934 · 被引用次数：122 · 研究领域：Rice Cultivation and Yield Improvement、Soil Carbon and Nitrogen Dynamics、Plant nutrient uptake and metabolism

Excessive reliance on chemical fertilizer (CF) in conventional farming is a serious concern owing to its negative effects on soil health, the environment, and crop productivity. Organic manure is an alternative source of fertilizer to reduce the amount of CF usage in agriculture, decrease environmental pollution, and ensure sustainable crop production. This study assessed the integrated effect of poultry manure (PM) and cattle manure (CM) with CF on soil properties, plant physiology, and rice grain yield. Additionally, the difference in pre-and post-anthesis dry matter (DM) and nitrogen (N) accumulation and their relationship with grain yield was also determined. Pot experiments were performed in the early and late growing season at the experimental station of Guangxi University, China, in 2018. A total of six treatments, i.e., T1-CF0; T2-100% CF; T3-60% CM + 40% CF; T4-30% CM + 70% CF; T5-60% PM + 40% CF, and T6-30% PM + 70% CF were used in this pot experiment. Results showed that T6 enhanced leaf photosynthetic efficiency by 11% and 16%, chlorophyll content by 8% and 11%, panicle number by 12% and 16%, and grain yield by 11% and 15% in the early and late seasons, respectively, compared to T2. Similarly1, post-anthesis N and DM accumulation, N uptake, and soil properties (i.e., soil organic carbon, total N, and bulk density) were improved with integrated CF and manure treatments over the sole CF treatments. Interestingly, increases in post-anthesis N uptake and DM production...