甘蔗产区土地人口承载力的分析——以广西贵县为例

Anaiysis of Land Population Capacity in Sugarcane Production Area

贵县位于北纬23°07′,东经109°37′,属于南亚热带季风气候,全县总耕地面积121.73万亩,其中甘蔗(主要是糖蔗)面积31.19万亩,是广西最大的糖蔗产区。本文以贵县甘蔗产区为例,分析甘蔗产区土地人口承载量。 一、甘蔗产量上限求算 甘蔗产量取决于气候、土壤、遗传告特性和管理水平。在气候条件中,当温度和水分得到满足时,光照对有机物质积累起着特殊的作用。甘蔗干物质的积累有90％以上是来自光合作用的产物,光合生产潜力大小在一定程度上能反映甘蔗产量的上限,

A method of trendency yield extrapolation added by active factors is used to predict the cane, yield in Guixian county. In the year 2000. cane yield will be 28467 kg per a, and total yield 1479014ton. and 48296 kg per a, and total yield 25262185 ton in the year 2030. On the basis of yield prediction, land population carrying capacity during the period 2000 to 2030 is analyzed.