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首页> 外文期刊>Journal of Natural Sciences Research >Impact of Selected Soil Physical Properties on Emergence of Maize Crop in Peshawar Valley
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Impact of Selected Soil Physical Properties on Emergence of Maize Crop in Peshawar Valley

机译：土壤物理特性对白沙瓦河谷玉米作物萌发的影响

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A research experiment was conducted to investigate the impact of selected soil physical properties on emergence of maize crop in Peshawar valley. Two research trials were carried out during the year 2011-12 at the Malakandhir Farm of the University Agriculture Peshawar. Nine treatments were arranged in RCBD with 4 replications with a total of 36 plots. The maize variety Jalal was planted using a maize planter having a seed rate 50 kg.ha-1. The maximum penetration resistance at 0-20 cm depth of 243.70 N cm-2 was recorded in plots prepared by cultivator twice followed by planking while minimum penetration resistance of 234.70 Ncm-2 was recorded in plots prepared by mould board plough followed by rotavator. Mean values for tractor passes showed that maximum penetration resistance of 242.79 Ncm-2was noted in plots that received four tractor pass while minimum penetration resistance of 238.28 Ncm-2was noted in plots that received zero tractor passes. Maximum bulk density of 1.35 g.cm-3 was recorded from plots prepared by cultivator twice followed by planking while lower bulk density of 1.27 g.cm-3 was recorded from plots prepared by mold board plough followed by rotavator. Mean values for tractor passes showed that lower bulk density of 1.28 g.cm-3 were noted from plots that received zero passes while maximum bulk density of 1.34 g.cm-3 were recorded from plots that received 4 tractor passes. Maximum days to emergence of 5.56 were recorded from plots prepared by cultivator twice followed by planking while fewer days of 5.45 were recorded for emergence of maize in plots prepared by mould board plough followed by rotavator. Mean values for tractor passes showed that more days of 6.13 were noted for emergence of maize in plots that received four tractor pass while less days 5.20 were observed with in plots that received zero tractor passes. More number of plants of 9.90 m-2 of maize emerged in plots prepared by mould board plough followed by rotavator while fewer plants of 9.66 m-2 of maize emerged in plots plough by cultivator twice followed by planking. Mean values for tractor passes showed that maximum emergence of 10.00 m-2 of maize plants were noted from plots that received zero tractor pass while maximum emergence of 9.26 m-2 of maize plants were noted from plots that received four passes of tractor. Keywords?Penetration Resistance, Bulk Density, Emergence, Tillage, Compaction, Maize
机译：进行了一项研究实验，以调查选定的土壤物理特性对白沙瓦河谷玉米作物出苗的影响。在2011-12年间，白沙瓦大学农业大学的Malakandhir农场进行了两项研究试验。在RCBD中安排了9种处理方法，共进行了4次重复，共计36个样地。使用种子播种率为50 kg.ha-1的玉米播种机播种玉米品种Jalal。在耕种机两次耕种后铺板的情况下，记录了0-20厘米深度处的最大渗透阻力为243.70 N cm-2，而在通过模板犁然后通过旋耕机制备的样地中记录的最小渗透阻力为234.70 Ncm-2。拖拉机通过的平均值表明，在接受四次拖拉机通过的地块中注意到最大穿透阻力为242.79 Ncm-2，而在接受零次拖拉机通过的地块中注意到最小穿透阻力为238.28 Ncm-2。由中耕机两次铺板后记录的样地记录的最大堆密度为1.35 g.cm-3，而由犁板机接着旋转耕地机记录的样地记录的最大堆密度为1.27 g.cm-3。拖拉机通过的平均值表明，从接受零次通过的地块中注意到较低的堆密度为1.28 g.cm-3，而从接受了4次通过的地块中记录的最大堆密度为1.34 g.cm-3。在中耕机准备两次后进行铺板的地块中记录的最大出苗天数为5.56，而在用模板刨犁然后进行旋耕机准备的地块中记录的玉米出土天数最少为5.45。拖拉机通行证的平均值表明，在获得四次拖拉机通行证的地块中，出现玉米的天数更多，为6.13天，而在获得零拖拉机通行证的地块中观察到的玉米天数较少的为5.20天。在通过犁板犁接着旋耕机准备的地块中出现了9.90 m-2玉米的更多植物，而在通过耕种机两次进行铺板的犁地中，出现了9.66 m-2玉米的更少的植物。拖拉机通过的平均值表明，从接受零次拖拉机通过的地块中，注意到玉米植株的最大出苗量为10.00 m-2，而从经过四次拖拉机通过的田地中，玉米植物的最大出苗量为9.26 m-2。耐渗透性，堆积密度，出苗，耕作，压实，玉米

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