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为了探索在山西早熟区无膜种植玉米的新模式及明确该地区玉米育苗移栽的适宜移栽时期,采用完全随机区组设计大田试验,以覆膜直播为对照,分析比较了不同时期露地移栽对玉米生育进程、株高、成熟期棒三叶叶面积与产量及其构成因素的影响。结果表明:各时期移栽玉米的生育进程均慢于对照。移栽具有降低株高与减小成熟期棒三叶叶面积的效应。在本试验条件下5月1日移栽玉米产量与对照无显著差异,较覆膜直播(CK)仅减少了7%。在早熟地区采用育苗移栽方法无膜种植玉米时必须注意当地晚霜对玉米幼苗的伤害,可以认为在该地区适宜的移栽时期应当是在当地晚霜之后抓紧时间尽早移栽。
In order to explore the new mode of filmless planting of maize in the precocious region of Shanxi and to identify the appropriate transplanting time for the transplanting of maize seedlings in this region, the randomized block design was used to design the field experiment and the direct seeding of film was used as the control. Effect of planting on the area, yield and its components of Cotyledons of the plant during the growth and development of maize. The results showed that the growth of transplanted corn was slower than that of the control. Transplanting has the effect of reducing the plant height and decreasing the area of the leaf of the three-leaf plantlets at maturity. Under the experimental conditions, the yield of transplanting maize on May 1 was no significant difference compared with the control, which was only reduced by 7% compared with the direct seeding (CK). The use of seedling transplanting in precocious areas should pay attention to the local night cream damage to corn seedlings without filming corn, it can be considered appropriate in the region during the transplanting period should be seized as soon as possible after the local night frost transplanted.