玉米和毛苕子间种轮作对土壤水分及硬度的影响

摘要

为探讨玉米与绿肥作物间种轮作后土壤物理性质的变化,对玉米与毛苕子的间种轮作模式进行试验以明确间种绿肥作物并翻压绿肥对土壤水分和硬度的影响.结果表明：6月25日3个模式0~20 cm 土层土壤含水量在14.9%~17.5%；20~60 cm 土层土壤含水量在18.5%~23.0%；7月27日0~60 cm 土层以模式一土壤平均含水量最低,为14.1%,模式二的为14.8%,模式三的最高,为16.2%；9月25日,0~60 cm 土层土壤平均含水量达到了25%左右.模式一和模式二0~30 cm 土层的土壤硬度均小于不种绿肥的模式三.说明玉米、绿肥作物间种并翻压绿肥能够很好地改善土壤的物理性质,提升土壤自身的蓄水保墒能力.%To investigate the effect of intercropping maize with green manure rotation on soil physical proper -ties ,the test of intercropping of maize with vetch rotation was conducted to study the models on soil moisture and hardness .The result showed that soil moisture of 0 ~ 20 cm soil layers in three treatments were between 14 .9% and 17 .5% on June 25th ,and the soil moisture of 20 ~ 60 cm soil layers were between 18 .5% and 23 .0% .The soil moisture of 0 ~ 60 cm soil layers were 14 .1% ,14 .8% and 16 .2% ,respectively on July 27th . The average soil moisture of three treatments was about 25% on Sep .25th .The soil hardness of 0 ~ 30 cm of mode 1 and mode 2 were less than mode 3 which planting maize alone .So it indicated that it could increase the soil physical properties and improve itself water capacity by intercropping maize with green manure rotation .