近几年,棉花生产上广泛应用地膜保温营养钵育苗移栽至地膜覆盖大田中,这一栽培方式我地称之为“双膜棉”,1992年我地实施3300多hm~2,占植棉面积的80％,较之钵苗移栽至露地大田一般增产15％左右。为研究双膜棉的高产栽培数学模型,采用二次通用旋转组合设计,选择了密度及尿素、氯化钾、棉饼施用量等四因素(1/2实施)进行了试验。 In recent years, cotton production is widely used in plastic mulching incubator seedlings transplanted to plastic mulching fields, this cultivation method I call it “double membrane cotton”, in 1992 I implemented more than 3300 hm ~ 2, accounting for planting 80% of cotton area, compared with potted transplanting to open field generally increase about 15%. In order to study the mathematic model of high-yielding cultivation of double-membrane cotton, the quadratic universal rotary combination design was adopted and the density, urea, potassium chloride and cotton cake application were chosen to test the four factors (1/2).