论文部分内容阅读
1 前期准备1.1 选地优先选择土壤肥力中等以上,大块连片,旱涝保收的旱地或缓坡地。1.2 隔离300m 内严禁种植其它任何品种的玉米,如采取时间隔离,则要求间隔30d 以上。1.3 地膜大田选用幅宽1m,厚度为0.008mm 的超薄地膜,用种量约4kg/667m~2。苗床选用宽2m、厚0.14mm 的农膜。1.4 晒种播前选择晴好天气晒种1～2d,并拣除异型、异色种子。1.5 整地、施肥、起垄上年秋季深耕灭茬,起到消灭地下害虫的作用。春季在移栽前10d 左右整平土地,在规划畦(畦连沟宽1.25～1.3m)
1 Preparation 1.1 1.1 preferred priority to select medium-sized soil fertility, large contiguous, dry and salty dry land or gentle slope. 1.2 Isolation 300m is strictly forbidden to grow any other varieties of corn, if the time separation is required, the interval is more than 30d. 1.3 Film Field selection of width 1m, a thickness of 0.008mm ultra-thin plastic film, the amount of about 4kg / 667m ~ 2. Selection of seedbed width 2m, 0.14mm thick plastic sheeting. 1.4 seeding before sowing sunny good sun drying 1 ~ 2d, and remove shaped, heterogeneous seeds. 1.5 land preparation, fertilization, ridging plow deep plowing in autumn last year, play a role in the destruction of underground pests. In the spring 10 days before transplanting flattened land, planning 畦 (畦 even ditch 1.25 ~ 1.3m)