在农业生产中,只有共同提高土壤肥力和土地生产力,才能高产稳产。所谓土壤肥力是指土壤能供给作物水分、养分、空气、热量的能力;而土地生产力是指在一定的土壤肥力水平基础上,与其它因素(人为因素和社会因素)相结合反映出来的经济效益。垦区现有耕地3000多万亩,有30多年的开垦史,粮豆亩产始终徘徊在100千克左右,并非是土 In agricultural production, only by jointly improving soil fertility and land productivity can high and stable yields be achieved. The so-called soil fertility refers to the ability of the soil to supply crops with moisture, nutrients, air and heat. The productivity of land refers to the economic benefits reflected by the combination of other factors (human factors and social factors) on the basis of certain soil fertility levels . Reclamation existing cultivated land more than 3,000 mu, 30 years of reclamation history, grain beans per mu has always hovered around 100 kg, not the soil