不同镇压强度对燕麦生长特性影响的试验研究

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,得出了镇压强度与配重的关系;通过田间标定试验,求解了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45.71kPa时,燕麦产量最大,为2439.3 kg/hm2,比不镇压时增产13.69%,燕麦的出苗率、苗期根的干物质积累量、茎叶的干物质积累量分别为75.66%、0.90g/10株、5.33g/10株,相比与不镇压时,分别增加了25.66%、36.36%、29.37%。

Experimental study on effects of different suppression intensity on the growth characteristics of oat

In order to explore the effect of different suppression intensity on the growth characteristics of oat, a suppression test device with adjustable suppression intensity was designed. The interaction between suppression wheel and soil was analyzed. Through force analysis and formula derivation, the relationship between suppression strength and counterweight was obtained. Through the field calibration test, the test counterweight under different suppression intensity was calculated. The 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. The results showed that different suppression intensity affected the emergence, seedling growth and yield of oats, and the appropriate suppression intensity was helpful to the growth of oats. When the suppression intensity is 45.71kPa, the yield of oat is the highest, which is 162.62kg/ mu, which is 13.69% higher than that without suppression. The emergence rate of oat, dry matter accumulation of roots at seedling stage and dry matter accumulation of stems and leaves are 75.66%, 0.90g/10 plant and 5.33g/10 plant, which increase by 25.66%, 36.36% and 29.37%, respectively.