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本试验在2011年雨季白沙瓦农业大学农场进行,2011年6月30日把玉米(品种Azam)播种在水分适宜土壤上,试验在播种期添加腐植酸,设3个浓度(1.5、3、4.5 kg/hm~2),分别在播种期、4~5叶期和孕穗期各添加1/3的氮量,设4个水平(80、120、160、200 kg/hm~2);不加腐植酸和氮素的为对照处理,试验为两因素随机区组试验,每个处理
The experiment was carried out on the farm of Peshawar Agricultural University during rainy season in 2011. On June 30, 2011, maize (variety Azam) was sown on soil with suitable moisture. During the experiment, humic acid was added at planting time. Three concentrations (1.5, 3, 4.5 kg / hm ~ 2). One third of the nitrogen was added at the sowing stage, 4 ~ 5 leaf stage and booting stage respectively. Four levels (80,120,160,200 kg / hm ~ 2) Humic acid and nitrogen for the control treatment, the test for the two-factor randomized block test, each treatment