为了探讨在佛山地区栽培双季稻的条件下,不同的冬种对于增产粮食、培养地力以及农田养分平衡状况的影响,我们从1978年早造至1980年晚造进行了有关试验。一、试验田基本情况试验田设在佛山兽专农场农学系试验地“中区中”(土名)。属垌田区的谷底冲积物 In order to investigate the effects of different winter seeds on grain yield, soil fertility and farmland nutrient balance under the conditions of double cropping rice in Foshan area, we carried out the experiments from early 1978 to late 1980. First, the experimental field of basic experimental field located in Foshan animal farm agronomy Department of experimental land “in the area” (soil name). It belongs to the valley bottom alluvial