Bamboos have expanded their distribution in Japan in recent decades due to the abandonment of forest management practices following depopulation and aging in rural communities. Developing effective uses for bamboo biomass resources is highly desirable. In this study, we tested the effectiveness of ground bamboo as a new organic mulching material for agrochemical-free rice farming. Specifically, we tested whether ground culms and leaves with or without refrigeration/fermentation treatments influenced rice production differently. Using plastic tubs (0.31 m²), we conducted a field experiment comprising five treatments with five replicates deployed in a randomized block design: (1) control, (2) fermented ground bamboo culm application, (3) refrigerated ground bamboo culm application, (4) fermented ground bamboo leaf application and (5) refrigerated ground bamboo leaf application. Ground bamboo application successfully suppressed the coverage of the most dominant aquatic weed, Monochoria vaginalis (Pontederiaceae). Tiller numbers and soil plant analysis development values of rice plants were significantly higher in most ground bamboo treatments (relative to controls) regardless of differences in bamboo organ source or refrigeration/fermentation treatment. Through enhancement of rice plant growth and suppression of aquatic weeds, rice yields were 1.76–2.06 times higher in the four ground bamboo treatments relative to controls. Application of ground bamboo did not noticeably reduce rice grain quality. Thus, the use of ground bamboo mulch has considerable potential in increasing the yield of high-quality rice, at least on a small scale.

近几十年来，由于在农村社区人口减少和老龄化之后放弃了森林管理实践，竹子在日本的分布有所扩大。非常需要开发竹生物质资源的有效利用。在这项研究中，我们测试了竹笋作为无农药农作物的新型有机覆盖材料的有效性。具体来说，我们测试了经过或不经过冷藏/发酵处理的地面茎秆和叶片对水稻生产的影响是否不同。使用塑料桶（0.31 m ²），我们进行了一项现场实验，包括以随机区组设计进行的五次重复处理的五种处理：（1）对照，（2）发酵地面竹笋施用，（3）冷藏地面竹笋施用，（4）发酵地面竹叶施和（5）冷藏地面竹叶的应用。地面竹子的施用成功地抑制了最主要的水生杂草-阴道麒麟菜（Pontederiaceae）的覆盖。）。在大多数竹制地面处理中（与对照相比），水稻的分numbers数和土壤植物分析发展值均显着较高，无论竹器官来源或冷藏/发酵处理的差异如何。通过提高水稻植株的生长和抑制水生杂草，四种竹子处理的水稻产量比对照高1.76-2.06倍。施用竹粉未显着降低稻米品质。因此，至少在小规模上，使用地面覆盖的竹覆盖物具有提高高质量稻米产量的巨大潜力。