河北省赵县夏玉米生产概况及增产措施研究
Studies on Production Situation and Measures of Increasing Yield of Summer Maize in Zhaoxian County of Hebei Province
试验于2018-2019年在河北省赵县宝丰源家庭农场进行。采用京农科728（JNK728）和郑单958（ZD958）2个玉米品种为材料，在3个种植密度（6.0万株/hm2，7.5万株/hm2，9.0万株/hm2）下系统分析了品种、密度对玉米增产的贡献；在3个N肥水平（120kg/hm2,180kg/hm2和240kg/hm2）下分析了不同密度和N肥对玉米产量的影响。结果表明：当地农民的夏玉米平均产量为8.96t/hm2，仅实现了当地气候产量潜力的48.5%；最优施用N量为180kg/hm2；适宜种植密度为7.5万株/hm2。在收获时JNK728的籽粒含水率＜28%，基本满足籽粒机械直收的要求；ZD958的籽粒含水率>28%，不适宜籽粒机械直收。在赵县农业资源条件下，选择中早熟品种、7.5万株/hm2密度、180kg/hm2的施氮量可获得高产、高效和宜籽粒机收的生产目标。
农作物农艺学农业科学研究
夏玉米产量密度施肥量籽粒机械收获河北赵县
张凤路,MARASINI Mukti,张桂萍,刘瑶,张顺风,管霞.河北省赵县夏玉米生产概况及增产措施研究[EB/OL].(2020-06-11)[2025-09-22].http://www.paper.edu.cn/releasepaper/content/202006-74.点此复制
The experiment was conducted in Baofengyuan Family Farm at Zhaoxian County of Hebei Province in 2018-2019. Two maize varieties, Jingnongke 728 (JNK728) and Zhengdan 958 (ZD985), were used to study the contribution of variety and density to maize yield increase at three densities (60,000 plants/ha, 75,000 plants/ha, 90,000 plants/ha); The effects of different N amount on maize yield were analyzed under three N levels (N1: 120kg/ha, N2: 180kg/ha and N3: 240kg/ha). The results showed that the average yield of summer maize of local farmers is 8.96t/ha, which only realizes 48.5% of the local climate yield potential; The optimal N application rate is 180kg / ha ; The suitable planting density is 75000 plants/ha;. At harvest time, the moisture content of JNK728 is less than 28%, which basically meets the requirements of grain mechanical harvest; the moisture content of ZD958 is more than 28%, which is not suitable for the requirements of grain mechanical harvest. Under the conditions of agricultural resources in Zhaoxian County, the selection of middle-early varieties, 75,000 plants/ha density, and 180kg/ha N application rate can achieve high-yield, high-efficiency and suitable grain mechanical harvest targets.
summer maizeyielddensityfertilization amountgrain mechanical harvestZhaoxian county of Hebei Province
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