苍山县地处我省南部地区,土质较好,气候温和,年平均气温13.5℃,无霜期200天左右,年降水量适中(920—970毫米),日照充足(2521小时)。传统植棉习惯为一年一熟制。1982—1983年部分社队试行大蒜—棉花复种两熟栽培(大蒜埂间套种棉花,棉田拔柴后直播大蒜),显著提高了经济效益。1983年全县推广面积达12700亩,亩产值均在1300元以上.比单种棉花多收入875—910元。 Cangshan County is located in the southern region of our province, soil quality is good, mild climate, the annual average temperature of 13.5 ℃, frost-free period of about 200 days, moderate annual rainfall (920-970 mm), adequate sunshine (2521 hours). Traditional cotton planting habits for a year. In 1982-1983, some communes and brigades experimented with two-crop cultivation of garlic and cotton (the cotton intercropping between garlic and cotton, and the direct sowing of garlic after pulling cotton from the cotton field), which significantly improved the economic benefits. In 1983, the entire county popularized an area of ​​12,700 mu, and the output value of mu was more than 1,300 yuan, 875-910 yuan more than the single kind of cotton.