衡阳市农业干旱问题及其对策研究

STUDY ON THE QUESTION OF AGRO - ARIDITY AND ITS COUNTERMEASURE IN HENGYANG CITY

以红色丘陵盆地地貌景观为主体的衡阳市,农业开发历史悠久,农业地位重要,但在大气环流、地貌结构、岩性、植被等自然因素和大面积破坏天然植被,无限制扩大耕地面积和耗水性农业,以及农业基础设施落后等人文因素的综合影响下,地域性的农业季节性干旱越来越表现出频率高、旱情重;夏秋多旱,秋旱尤甚;地域差异明显,但有一定规律等特征,乃至成为区域农业发展的最大障碍性因素。为确保衡阳作为国家商品粮基地、重要的经济作物基地和畜禽、淡水渔基地的地位,必须针对衡阳市所特有的农业干旱问题,加强其生态环境和农田水利基本建设,调整和优化区域农业结构,建立有效的防灾、减灾保障体系。

Hengyang city with characteristic of red hills basin landforms, its agricultural development has long history and agricultural position is important, but on the condition that big area natural vegetation was destoryed, and plantation and water - wore area was enlarged unlimittedly and agriculture basic establishment was lag behind, and humanity factor take off together, the a-gricultural seasoning of region arid more and more show frequency high, drought highly; the drought is more in summer and autumn, but the autumn is more graveness; region discrepancy is obvious but has the features of certain law, and even become the biggest obstacle factor of regional agricultural development. For the sake of Hengyang city as country commodity grain base and vital economic crop base and freshwater fishing base status, the special agro - aridity question of Hengyang city should be pointed out, and environment and cropland irrigation basic construction should be strengthened, and region agro - structure should be rectified and optimized, and effictive defending and reducing disaster safeguard system should also established.