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为了解地膜在高密度玉米种植上的应用效果,在白浆土地上进行了地膜种植与祼地高密度种植玉米的效果比较试验。结果表明,地膜高密度种植玉米的保苗率、保穗率、千粒重、产量及产值均高于祼地种植;地膜高密度种植玉米的各生育期均较祼地种植提前5~7 d。地膜高密度种植收获株数为103 995株/hm2,而收获穗数为72 825穗/hm2,空秆株数为31 170株/hm2,为消除玉米空秆株,种植密度应为72 825株/hm2。因此,明确了桦甸市白浆土高密度地膜种植玉米密度为72 825株/hm2,可为确保增产增收提供有力的技术支撑。
In order to understand the application effect of mulching film on high-density corn planting, comparative experiments on the effect of mulch planting and high density planting of corn on white soil were carried out. The results showed that seedling conservation rate, boll rate, grain weight per plant, grain yield and production value of high-density mulched maize were higher than those of highland mulch. The growth of high-density mulched corn was 5-7 days earlier than that of marsh. The planting density of high-density mulching was 103,995 plants / hm2, while the number of ears harvested was 72,825 ears / hm2, and the number of empty mulches was 31,170 plants / hm2. To eliminate maize empty stalks, the planting densities should be 72,825 plants / . Therefore, it was clarified that the planting densities of high-density mulch in bred soil of Huadian City was 72 825 plants per hectare, which could provide strong technical support for ensuring yield increase.