一、多熟制种植的基本情况江苏省沿江高沙土地区是由长江淤泥冲积而成，土质偏沙，保水性差，地力瘠薄，历史上多以种植旱粮为主。该地区全年的光温资源属“二熟有余，三熟偏紧”。种植制度以“小麦—水稻”一年两熟为主，一年三熟、四熟为辅。随着人口增加、耕地面积减少... First, the basic situation of multi-cooked planting Jiangsu Province, the high sand area along the Yangtze River alluvial sediments, sandy soil, poor water retention, fertility infertility, the history of mostly dry farming-based. The region’s light and temperature resources throughout the year are “more than two cooked, three cooked tight.” Planting system to “wheat - rice” twice a year mainly three crops a year, supplemented by four crops. As the population increases, the area of ​​arable land decreases ...