贵州主要粮油作物高产潜力研究 Ⅳ土地生产潜力研究

High Yield Potential Research of Main Grain and Oil Crops in Guizhou Ⅳ the Productive Potential Research of Land

研究了作物超高产中的土地生产潜力问题。选择具有代表性的、能直接反映土壤函数的主导性指标,参照贵州省土壤等级划分标准对贵州土壤进行等级划分,根据每个等级土壤限制因素大小确定土壤函数,将土壤生产潜力的内涵定位为:除去人为干预措施外(包括工程、施肥等)的生产能力。以此法计算了贵州省的水稻土壤生产潜力,并以贵阳市花溪区中产田超高产调控试验作为验证,土壤生产潜力与实际结果较为吻合。

This paper studied the problems of land productive potential with Super-high-yield crops. This research chose the leading indexes which had representativeness and can directly reflect the soil function, consulted and followed the division standard of soil rank in Guizhou Province to carry on the rank division to Guizhou soil, and determined the soil function according to the size of soil restriction factors with each grade, and considerd the soil productive potential＇ s connotation as ： the production ability with the exception of the artificial intervention measures （including project, fertilizing, etc. ）. Calculated the rice soil productive potential of Guizhou Province by this theory, and it has taken the experiment on super-high-yield control of the middle - yield field in Huaxi district of Guiyang as the confirmation, the soil productive potential is so in line with the actual results.