ArticleEcology and evolution2025
Study on the Suitable Area of Ratoon Rice in China Under Climate Change.
Article in Ecology and evolution, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
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Abstract
Ratoon rice is a special cultivation system developed based on the regenerative capacity of rice axillary buds. Its core mechanism lies in regulating the regeneration potential of stubble axillary buds through agronomic practices. After harvesting the main-season rice, dormant buds are induced to sprout and form secondary tillers, which eventually develop into effective panicles, thereby achieving "one planting with two harvests." In this study, 167 occurrence records of ratoon rice, nine environmental variables, and three future climate scenarios proposed in CMIP6 (SSP1-2.6, SSP2-4.5, and SSP5-8.5) were used to predict the suitable cultivation area of ratoon rice in China using the MaxEnt model. The results showed that the main environmental factors influencing the distribution of ratoon rice were accumulated temperature during the safe growth period, length of the safe growth period, altitude, hydrothermal coefficient in August, mean temperature in September, and precipitation from March to September. The optimal ranges of these factors were 4314°C-5497°C, 191-225 days, 0-511 m, 0.3-11.4, and 21.0°C-25.2°C, respectively. Under the current climate scenario, the potential suitable area of ratoon rice in China was mainly distributed south of the Qinling-Huaihe line (92.39°-121.96° E, 18.23°-30.36° N), covering a total area of 193.90 × 10
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