江苏省是我国人多地少的地区之一,随着经济建设的发展和人口不断的增加,对粮食的需求量越来越大。但目前全省土地垦殖指数和复种指数都较高,加之多种经营、工矿企业和居住用地不断增加,使耕地逐渐减少,因此,地少与粮食需求量大的矛盾日益突出,这就决定了今后增产粮食的主攻方向应是提高粮食单位面积产量。但江苏省粮食单产还能不能提高呢?能提高多少呢?要了解这个问题,就要从农作物生长同自然环境之间的协调和统一上, Jiangsu Province is one of the areas where there is more and more land in our country. With the development of economic construction and the continuous increase of population, the demand for food is growing. However, at present, the land reclamation index and multiple cropping index in the whole province are relatively high. In addition, due to the diversification of industries, industrial and mining enterprises and residential land use, the cultivated land gradually decreases. Therefore, the contradiction between less land supply and large grain demand has become increasingly prominent, which determines In the future, the main direction for increasing grain output should be to increase grain yield per unit area. However, the yield per unit area of ​​grain in Jiangsu Province can not be raised yet? How much can be increased? To understand this issue, we must start from the coordination and unification of crop growth with the natural environment,