不同镇压强度对燕麦生长特性的影响

Effects of Different Suppression Intensity on Growth Characteristics of Oat

为探究不同镇压强度对燕麦生长特性的影响,设计了一种镇压强度可调的镇压试验装置,分析了镇压轮与土壤之间的相互作用关系,通过受力分析和公式推导得出镇压强度与配重的关系,通过田间标定试验求解不同镇压强度下试验配重。通过田间试验对燕麦的出苗率、苗期根茎叶干物质积累量、产量等农艺学特性进行了追踪分析,试验结果表明,不同的镇压强度影响燕麦的出苗、苗期生长发育及产量,适宜的镇压强度有助于燕麦生长。当镇压强度为45 kPa时,燕麦生长发育情况表现最佳,燕麦出苗率、苗期根干物质积累量、茎叶干物质积累量、产量分别为78.33%、0.088 g/株、0.546 g/株、2501.25 kg/hm^(2),相比不镇压时,分别增加了30.09%、33.33%、32.52%、16.58%。

In order to explore effect of different suppression intensity on growth characteristics of oat,a suppression test device with adjustable suppression intensity was designed.Interaction between suppression wheel and soil was analyzed.Through force analysis and formula derivation,relationship between suppression strength and counterweight was obtained.Through field calibration test,test counterweight under different suppression intensity was calculated.Agronomic characteristics of oat such as emergence rate,dry matter accumulation of roots,stems and leaves at seedling stage and yield were tracked and analyzed by field experiment.Results showed that when suppression intensity was 45 kPa,growth and development of oats were the best,emergence rate,dry matter accumulation of roots at seedling stage,dry matter accumulation of stems and leaves,and yield of oats were 78.33%,0.088 g/plant,0.546 g/plant,2501.25 kg/hm^(2),which increased by 30.09%,33.33%,32.52%,and 16.58%compared with that without compression,respectively.