为了摸索矮秆早熟棉花品种的高产途径,我们在1972年进行棉花密植试验。供试品种为宁棉12号,处理分每亩5000、10000、15000株三种,以5000株为对照。种植方式:小区长31.5尺,宽8尺,四畦区,面积0.168亩。每亩5000株的对照用当地习惯种植法,每畦种4行,宽行行距2.2尺,窄行1.8尺,株距6寸;每亩10000株的处理每畦种5行,平均行距为1.6尺,株距0.31尺;每 In order to explore the yield of dwarf precocious varieties of cotton, we conducted a cotton planting test in 1972. Test varieties for the Ningmian 12, dealing with points per acre 5000,1000015000 three, 5000 as a control. Planting methods: Community length 31.5 feet, width 8 feet, Sifang District, an area of ​​0.168 acres. The control of 5000 plants per acre was accustomed to the local habitat planting method, with 4 rows per species, with 2.2 rows with wide rows and rows with 1.8 rows with narrow rows and 6 inches with rows; , Spacing 0.31 feet; each