不同种植模式的花生单粒精播密度研究

摘要

研究了春播和麦套2种种植模式下不同密度单粒精播对花生农艺性状和产量的影响。结果表明,精播密度对春播花生花育20号和麦田套种花生花育22号的主茎高、侧枝长均随着密度的增加而提高,而分枝数、单株结果数、双仁果率和饱果率均随密度的增加而减少。小粒花生花育20号的适宜密度大于大粒花生花育22号,两者适宜密度分别为22.5和21.0万穴.hm-2,比常规双粒穴播分别增产2.2%和4.1%。%Effects of different single-seed sowing densities on the agronomic traits and yields of peanut under two planting patterns including spring sowing and intercropping with wheat were investigated.The results showed that effects of sowing density on agronomic traits of spring peanut（Huayu20） and intercropped peanut（Huayu22） were similar and with the increasing of sowing density,main stem height and lateral branch length were increased.On the contrary,number of branches,pods per plant,ratio of double seed pod and ratio of mature seed pod were all decreased.The appropriate sowing density of smaller seed type（Huayu20） was higher than that of bigger seed type（Huayu22）,which were 255000 and 210000 seeds per hectare,with yield increase of 2.2% and 4.1%,and reduction in sowed-seed rate of 15% and 30%,respectively.