“坑种”就是挖坑种植。“坑种”具有如下优点:①灌水集中,墒情好,能获全苗;②施肥集中,肥充足,不易脱肥;③种植错位,光照好,光能利用率高;④耕作层深,抗旱抗涝。一般采用100厘米1行,67厘米1坑;或100厘米1行,83.3厘米1坑,坑内集中施肥、灌水,每坑按三角形种植3穴玉米。只要不是特别干旱的年份,采用此法种植的玉米,每亩可获得500公斤以上的产量。在同等条件下,“坑种”比其 “Keng Keng” is digging for planting. “Pit type” has the following advantages: ① concentrated irrigation, moisture is good, can be the whole seedlings; ② concentrated fertilization, adequate fertilizer, not easy to take off; ③ planting dislocation, light is good, high light utilization rate; ④ tillage depth, drought Waterlogging. Generally use 100 cm 1 row, 67 cm 1 pit; or 100 cm 1 row, 83.3 cm 1 pit, concentrated fertilization in the pit, irrigation, planting three holes per triangle of corn according to the pit. As long as it is not a particularly dry year, the corn planted by this method will yield more than 500 kg per acre. Under the same conditions, “pit pit” than its