Abstract:

To investigate the application efficacy of microbial concentrate formulations in green, high-quality, and high-efficiency rice cultivation, and to clarify their field value in controlling rice false smut, stabilizing yields, increasing production, and improving quality and efficiency, a large-scale field demonstration trial was conducted in 2025 across major rice-growing regions in southern China, including Guangxi and Guangdong. The experiment adopted a two-stage microbial application strategy—at the seedling stage and the booting stage—with conventional fertilization (without microbial concentrate) as the control. Key parameters including panicle traits, disease control efficacy, yield, and economic returns were systematically evaluated. The results demonstrated that across eight early rice demonstration sites, the microbial treatment increased average panicle length by a net 0.89 cm (a 3.6% rise) compared to the control, while significantly enhancing post-flood stress recovery capacity. In late rice demonstration areas, the two-stage application technique achieved a grain yield of 445.8 kg/667 m², representing a 14.7% increase over the control (388.7 kg/667 m²). The treatment also suppressed rice false smut balls and infected tiller clusters at rates of 85.5% and 85.0%, respectively. Furthermore, it markedly improved grain market quality: the procurement price per kilogram of paddy rose by 0.34 CNY, and the comprehensive income per 667 m² increased by 288.50 CNY compared to the control. These findings indicate that the two-stage microbial application technology delivers multiple benefits—green disease control, stress resilience, stable yields, yield enhancement, quality improvement, and economic gains. With strong adaptability and consistent performance, this technique provides a practical foundation and technical support for developing and scaling green, high-yield rice cultivation systems in southern China.

Key words: rice, microbial concentrate formulation, rice false smut, green control, grain yield, economic benefit

摘要：

为探究微生物浓缩制剂在水稻绿色高质高效栽培中的应用效果，明确其防控稻曲病、稳产增产及提质增效的田间应用价值，于2025年在广西、广东等南方稻区开展大田示范试验。试验采用“秧苗期+破口期”两段式施菌模式，以常规施肥（不施用微生物浓缩制剂）为对照，系统测定各处理水稻穗部性状、病害防控效果、产量及经济效益。结果表明，在8个早稻示范试点，菌剂处理水稻平均穗长较对照净增0.89 cm，增幅达3.6%，且显著提升水稻涝后逆境修复能力；在晚稻示范区，采用“秧苗期+破口期”两段式施菌技术，稻谷产量达445.8 kg/667 m²，较对照（388.7 kg/667 m²）增产14.7%，抑稻曲球率和抑病丛率分别为85.5%和85.0%；同时显著改善稻谷商品品质，与对照相比，每kg稻谷收购单价提升0.34元，每667 m²综合增收288.50元。可见，该微生物菌剂两段式施用技术可实现水稻病害绿色防控、抗逆稳产、增产提质与效益增收多重成效，技术适配性强、稳定性好，可为我国南方稻区水稻绿色高产栽培技术体系的构建与规模化推广提供实践依据与技术支撑。

关键词: 水稻, 微生物浓缩制剂, 稻曲病, 绿色防控, 产量, 经济效益