广东省不同典型区耕地产能利用潜力分析

在广东省农用地三个层次产能核算成果的基础上,分析了五个典型区农用地产能理论利用潜力(远景产能潜力)和可实现利用潜力(近期产能潜力)的空间分布格局,最后结合广东省农用地分等成果,根据各农用地分等参评因子的因子距和相关分析,分析了各典型区近期农用地产能提升的关键方向。结果表明:广东省粤北和潮汕地区农用地利用强度最高,农用地产能潜力较小,未来产能提升空间较低,尤其是潮汕平原区,有的地方已经基本用尽潜力。雷州半岛、粤西南、粤中南地区产能潜力较高,未来产能有较大的提升空间。雷州半岛地区产能提升主要靠提高灌溉保证率;粤西南和粤中南提升的主要方向均是农田基础设施整治,提高灌溉保证率,同时改善土壤pH和提高土壤肥力分别是粤西南区和粤中南区的另一个产能提升的重要方向;粤北主要靠提高灌溉保证率和有机质含量、改善田面坡度来提升产能;潮汕平原区农用地产能提升潜力较低,可通过对沿海土壤盐渍化的改善提升部分农用地产能。

Analysis of use potentialof farmland productivity in different typical areas of Guangdong Province

Abstract On the basis of accounting results of agricultural production capacity in Guangdong Province, the paper analyzed the spatial patterns of natural productivity use potential(future productivity potential) and reality productivity use potential(short-term productivity potential) under the five Typical Areas in Guangdong Province, and according to the cultivated land gradation results and factor differentials & correlation coefficient of the participating factors ,it explored the main impact factors for promoting the production capacity potential of typical areas in near future. The results showed that the most high-value areas of use intensity and the minimum value areas of use potential in the Northern of Guangdong province and in the Chaozhou-Shantou region, especially in latter region where there was hardly any potential in some places, and meanwhile the more promoting potentials area was in Luichow peninsula region,Central-south and Southwest of Guangdong province. Therefore, ensuring probability of agricultural irrigation was an important way to increase cultivated land production capacity in the future in Luichow peninsula. Renovating farmland infrastructure was a main way to increase production capacity in central south and southwest of Guangdong province, and improving the soil pH and increasing soil fertility were also the effective ways in above regions; it could increase cultivated land production capacity through improving organic content, agricultural irrigation and farmland slope in the northern of Guangdong province;Production capacity could be partly increased by improving salinification along the coast in the Chaozhou-Shantou region .