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Effects of small ridge and furrow mulching degradable film on dry direct seeded rice
Summary
Researchers tested biodegradable mulch films in micro-ridge-furrow planting (raised beds with channels) for dry-seeded rice in semiarid China, finding that biodegradable film outperformed traditional plastic film in soil temperature, plant growth, and grain yield. This method reduces plastic pollution in agricultural fields while maintaining or improving crop productivity.
Global climate change and socio-economic development have led to a shortage of water and labour resources, which has had a significant impact on rice cultivation. In this study, the application of micro-ridge-furrow planting technology and degradable film mulching in dry direct-seeded rice was investigated to address the factors restricting the development of the rice industry and reduce the impact of rice production on the environment. The effects of a micro-ridge-furrow planting pattern and degradable film mulching on soil temperature, seedling growth, and yield of dry direct-seeded rice in a semiarid region of China were studied through three field experiments: micro-ridge-furrow mulching with traditional plastic film (T1); micro-ridge-furrow mulching with degradable film (T2); and traditional flat-cropping mulching with traditional plastic film (CK). The experimental results demonstrated that the micro-ridge-furrow mulching film planting pattern promoted the germination of rice seeds and improved the soil temperature, plant height, leaf area, dry mass, and grain yield. T2 had the highest average soil temperature (14.68-17.83 ℃ during the day; 14.4-15.74 ℃ at night), leaf area (41.85 cm2 plant-1), root dry mass (45.32 mg plant-1), shoot dry mass (58.46 mg plant-1), root-shoot ratio (0.821), and yield (8.112 t ha-1). In summary, the micro-ridge-furrow mulching with degradable film (T2) is recommended as an efficient planting and mulching pattern for sustainably solving environmental problems and improving grain yield in semiarid regions of China.
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