要有产出必须先予投入,在一定条件下,投入与产出存在着正相关的函数关系。农业生产同样如此。尽管几年来,苏州市对农业生产采取了一系列的鼓励政策和行政性措施,但仍无法挽回粮棉油产量徘徊不前的局面。这与农业投入下降有着直接关系。我 To have output must first be invested, under certain conditions, there is a positive correlation between input and output. The same is true of agricultural production. Although Suzhou has adopted a series of incentive and administrative measures for agricultural production in the past few years, it still can not recover the stagnant output of grain, cotton and oil. This is directly related to the decline in agricultural input. I