论文部分内容阅读
锰是作物所需的微量元素之一,土壤中有效锰的含量通常随土壤中pH值、碳酸钙含量的增加而降低;随有机质含量的增多有效性增加。酒泉地区一般土壤耕作层中pH>7,有机质含量1％左右,碳酸钙含量多在10—30％之间。一、酒泉地区土壤中全锰的含量及分布全锰的含量范围是300—500ppm,平均含量是407.3ppm,既低于我国土壤的平均含量710ppm,亦低于世界土壤的平均含量600ppm或850ppm。含量的变幅小,高低相差一倍左
Manganese is one of the trace elements required for crops. The content of available manganese in soil usually decreases with the increase of soil pH and calcium carbonate content. The availability of organic matter increases with the increase of organic matter content. Jiuquan tillage soil layer in the general pH> 7, organic matter content of about 1%, calcium carbonate content of more than 10-30%. I. Content and Distribution of Total Manganese in Soils in Jiuquan Region Total Manganese content ranges from 300 to 500 ppm with an average content of 407.3 ppm, which is lower than the average soil content of 710 ppm in China and below 600 ppm or 850 ppm of the average soil content in the world. Small amplitude of the content, the level of difference between double left