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夏玉米是山东省莱州市秋季主要的粮食作物,但在夏玉米整个生育期内,高温多雨、玉米植株高大,给玉米的追肥带来很大困难,需要消耗大量的劳动力,部分地区出现减少追肥次数的现象,导致玉米不同程度地减产。控释肥具有肥效期长且稳定的特点,能满足玉米在整个生育期对养分的需求,同时可减少施肥的数量和次数,节省劳动力,降低成本。为了获得控释肥在玉米生产上的最佳施肥时期,试验通过对不同的控释肥施用时期进行综合比较,以期为控释肥在玉米生产中的推广提供科学依据。
Summer maize is the main food crop in autumn in Laizhou City, Shandong Province. However, during the whole growth period of summer maize, the high temperature and rainy and tall corn plants bring great difficulty to the top dressing of corn, consume a lot of labor and reduce the top dressing in some areas The phenomenon of the number of times, resulting in different levels of corn production. Controlled release fertilizer has the characteristics of long and stable fertilizer, which can meet the requirement of nutrient during the whole growing period, reduce the quantity and frequency of fertilization, save labor and reduce cost. In order to obtain the optimal fertilization period of controlled release fertilizer on corn production, the experiment compares the different control release fertilizer application period to provide a scientific basis for the promotion of controlled release fertilizer in corn production.