一、自然条件及生产状况海山大队濒临广东省南海之滨,土质是海滩砂质土,地面至15米深的土层为粉砂颗粒,结构松散,透水性极强,表层砂土常随风吹移。地下潜水位埋深1～1.5米,水量较丰富,毛管活动能力较强。大队主要种植花生、红薯等作物,生产条件较差,因没有灌溉条件,作物产量很 First, the natural conditions and production conditions Coastal brigade on the verge of the coast of Guangdong Province, South China Sea, the sandy beach soil quality, the ground to 15 meters deep soil silt particles, loose structure, strong permeability, surface sand often with the wind Blowing. Underground diving bit depth of 1 to 1.5 meters, the water is more abundant, capillary activity ability. The brigade mainly produces peanuts, sweet potatoes and other crops with poor production conditions. Due to the lack of irrigation, crop yields are very high