The study was conducted at the Malakandher Research Farm, NWFP Agricultural University, Peshawar during 2000-2001 to determine the effect of nitrogen and phosphorus on the yield and yield components of wheat Analysis of the data revealed that different levels of nitrogen, phosphorus and their interaction significantly affected yields and yield components of wheat Mean values of the nitrogen shows that maximum emergence m~(-2), productive tillers m~(-2), grain yield and biological yield was recorded in those plots which were treated with 150 kg N ha~(-1), while maximum days to flowering, days to maturity, plant height were noted in those plots which received nitrogen at the rate of 200 kg N ha~(-1). Similarly different doses of phosphorus indicated that maximum emergence m~(-2), productive tillers m~(-2), grain yield and biological yield were noted in plots treated with 45 kg P ha~(-1), while maximum days to flowering, days to maturity, plant height were noted in plots which were treated at the rateof 135 kg P ha~(-1). In case of NP interaction, maximum emergence m~(-2), plant height, productive tillers m~(-2), grain yield and biological yield were obtained when plots were fertilized at the rate of 150:45 kg NP ha~(-1), while maximum days to flowering and days to maturity were recorded from plots fertilized at the rate of 200:135 kg NP ha~(-1). On average basis of data 150 kg N ha~(-1) and 45 kg P ha~(-1) have given good performance as compared to other levels of N and P.
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机译：这项研究是在2000-2001年期间在白沙瓦NWFP农业大学Malakandher研究农场进行的，以确定氮和磷对小麦产量和产量构成的影响。数据分析表明，不同水平的氮，磷及其相互作用氮的平均值表明，以150 kg N处理的田间记录了最大出苗量m〜（-2），生产分tillm〜（-2），谷物产量和生物产量。在那些以200 kg N ha〜（-1）的速率接受氮的地块中，注意到ha〜（-1）的最大开花天数，到成熟的天数，植物高度。同样，不同剂量的磷表明，在以45 kg P ha〜（-1）处理的地块中，出现了最大出苗m〜（-2），生产分till m〜（-2），谷物产量和生物产量，而最大施用天数为以135 kg P ha〜（-1）处理的样地记录了开花，成熟天数，株高。在NP互作的情况下，以150：45 kg NP ha〜（）的比例施肥，可获得最大出苗m〜（-2），株高，生产分tillm〜（-2），谷物产量和生物产量。 -1），而从以200：135 kg NP ha〜（-1）的比例施肥的地块记录了开花的最大天数和成熟的天数。平均而言，与其他水平的氮和磷相比，150 kg N ha〜（-1）和45 kg P ha〜（-1）表现良好。
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