[Effects of different peanut-cotton intercropping modes on physiological characteristics and yield of peanut in late growth stage].

Using peanut cultivar Huayu 25 and cotton cultivar Liaomian 19 as experimental material, we examined the effects of different intercropping patterns on physiological characteristics of peanut in later growth stage, yield and economic benefit, based on an experiment with five treatments, including intercropping modes of 4 rows peanut and 4 rows cotton (HM), 6 rows peanut and 4 rows cotton (HM), 4 rows peanut and 4 rows cotton (HM), sole peanut (DH) and sole cotton (DM). The results showed that intercropping mode increased the length of main stem and branches of peanut, but decreased green leaves number of main steam, leaf area index, and total dry matter accumulation. Among the intercropping modes, chlorophyll content, chlorophyll fluorescence parameters, root vigor, nitrate reductase activity under HM and HM were significantly higher than that under HM, as well as higher superoxide dismutase, peroxidase, catalase activity and decreased malondialdehyde content.