江汉平原土地生产潜力及其发挥途径

ON POTENTIAL PRODUCTIVITY AND REALIZATION OF JIANGHAN PLAIN

通过对江汉平原地区的光合生产潜力、光温生产潜力、气候生产潜力、气候-土壤生产潜力的计算,认为该地区仍有巨大的增产潜力,并提出进一步发挥生产潜力的有效途径。

In this paper, the authors have calculated the sunlight and temperature potential productivity, the climate potential productivity and the land natural potential productivity of each major crop in different areas of Jianghan Plain by using some calculating models built so far. The ressults indicte that actual crop yield per unit land is less than Its land potential productivity because the distributions of water resources and soil fertility aren't uneven. At last, the authors suggested some measures to raise the crop field by enlarging multiple crop inder, optimizing cropping system and rationalzing water and land etc.