赤水市土地生产潜力初步研究

本文根据作物产量形成理论和赤水市气候、土壤统计资料，计算了赤水市气候生产潜力和气候土壤潜力值，认为气候土壤潜力即是土地的生产潜力，计算结果为：５００ｍ以下地区，一年三熟，旱地单产（小麦＋玉米）达９．８７ｔ／ｈａ，水田（小麦＋水稻）１６．６７ｔ／ｈａ；５００ｍ以上地区一年二熟，水田可达１３．６４ｔ／ｈａ，旱地８．２１ｔ／ｈａ。与实际生产能力相比，现实生产力仅为潜力的１／３～１／２左右，尚有较大潜力可挖

A STUDY OF POTENTIAL PRODLICTIVITY OF THE CULTIVATED LAND IN CHISHUI CITY

In this paper, it has been calculated the potential productivity of Cultivated land in Chishui city with the theory of Primary productivity and the statistical data of climates and Second general survey data of Soil. The results are the following: i. the area with elevation of 500 meter lower, the productivity is about:paddy field 16.67 t/ha, the dry land 9.87 t/ha and three erops a year; ii the area with an elevation of 500 meter higher, the productivity is about: paddy field 13.64 t/ha, the dry land 8.21 t/ha.