河曲县地处晋西北黄土丘陵区,十年九旱,年降雨量只有450毫米,无霜期120～130天,海拔800～1000米,过去品种以山东伏花生为主,亩产100公斤左右。1984年以来,引进海花1号,采用地膜覆盖等栽培技术,增产64.2％,亩纯收入增加90～138元。其栽培技术如下: Hequ County is located in the loess hilly region of northwestern Shanxi Province. Nine years of drought have occurred during the past ten years. The annual rainfall is only 450 mm. The frost-free period is 120 to 130 days and the altitude is 800 to 1,000 meters. In the past, the major species were Shandong peanut, with a yield of 100 kg per mu. Since 1984, the introduction of sea flowers on the 1st, using mulching and other cultivation techniques, an increase of 64.2%, net income increased 90 to 138 yuan per mu. The cultivation techniques are as follows: