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基于遥感计算的气温和土壤水分及DEM计算的太阳辐射等地表参数代替站点观测数据,采用100m×100m栅格和适宜性评价指数对泸西县的烤烟种植适宜性进行评价,分析其空间分布规律。在此基础上,进行了烤烟的烟田轮作规划与核查监督。研究表明,泸西县的烤烟种植最适宜区的耕地利用率偏低,仅为28.1%,尚有2165ha的最适宜耕地有待开发利用。烤烟轮作率虽然逐年增长,最高也仅为63.7%,离95%的目标轮作率仍存在较大差距。适宜性评价时,利用遥感和DEM计算的地表参数代替观测站点的插值数据,能获得可靠的数据支持,弥补因观测站点缺失而导致的数据失真。基于空间信息的轮作规划与核查监督,可有效改善烤烟轮作率,提高烤烟的质量和产量。
Based on remote sensing data such as air temperature and soil moisture and surface solar radiation calculated by DEM, the site observation data was replaced by 100m × 100m grid and suitability evaluation index to evaluate the suitability of Luxi tobacco planting. The spatial distribution was analyzed . On this basis, carried out planning and verification of tobacco rotation in flue-cured tobacco. The research shows that the cultivated land use efficiency of Luxi County is the lowest, only 28.1% of the most suitable area for flue-cured tobacco planting, and 2156 ha of the most suitable cultivated land yet to be developed and utilized. Though the rate of flue-cured tobacco is increasing year by year, the highest rate is only 63.7%. There is still a big gap between the target rate of 95% and the target rate. In the suitability evaluation, using the surface parameters calculated by remote sensing and DEM instead of the interpolation data of the observation site, reliable data support can be obtained to compensate for the data distortion caused by the lack of observation sites. Spatial information based rotation planning and verification of supervision can effectively improve the rate of tobacco rotation, improve the quality and yield of flue-cured tobacco.