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广西岩溶区面积96400km~2,约占全区面积的41%,其中有耕地面积73.3333万公顷,约占全区耕地的30%。岩溶区目前仍有65%—75%的耕地因干旱缺水而长期处于低产状态,经济发展缓慢。1.岩溶区干旱的基本原因(1)岩溶区耕地资源受地貌条件控制,可分为洼地型、谷地型和平原型三种耕地资源类型,具有分布极度分散到相对集中,耕作条件极差到较好的条件差异。岩溶区水资源极为丰
Guangxi karst area of 96400km ~ 2, accounting for about 41% of the area, of which 7.33333 million hectares of arable land, accounting for about 30% of arable land in the region. Currently, 65% -75% of arable land in the karst area is still in a low-yielding state due to drought and water shortages, and its economy is slow to develop. 1. The basic causes of drought in karst area (1) Cultivated land resources in karst area are controlled by the geomorphic conditions and can be divided into three types of cultivated land resources: depression type, valley type and plain type. They are distributed intensively to relative concentration, with extremely poor farming conditions Good condition difference. Karst area is extremely rich in water resources