赣榆县厉庄地埂利用型式试验

在赣榆县厉庄以大金鸡菊、紫穗槐和红柳三种经济植物进行了地埂利用型式试验,取得了比较明显的水土保持效果和改善农田小环境的生态效益。栽植后第三年植物覆盖率达90％或100％;地面蒸发量减少15.2～17.7％;截留降水量为0.5～0.7mm;大气相对湿度提高3.7～5.4％;土壤养分也有不同程度的增加。经济效益估测每亩地埂可收到300～600元,比种黄豆高5～9倍。效益最好的是红柳,大金鸡菊次之,紫穗槐较低。

Experiment on utilization patterns of borders of the terraced field in Lizhuang, Ganyu County

Notable effects on soil and water conservation and ecological benefits of improving micro-environment of the farmlands were obtained in Lizhuang, Ganyu County through the experiment of utilization patterns of borders of the terraced field with three species of economic plant- Coreopsis lanceolata, Amorpha fruticosa and Salix sino-purpurea. The results indicated that in the third year after cultivation crown cover degree was up to 90% or 100%; ground evaporation decreased 15. 2~17. 7%; rainfall interception was 0. 5~0. 7 mm; air relative humidity increased 3. 7~5. 4%, and soil nutrients increased in various degrees. The income of each species on the borders of terraced field were estimated as 300~ 600 yuan/mu. It was 5~9 times as much as that of soybean. Among them, the economic benefits of Salix sino-purpurea was the best, then Coreopsis lanceolata and Amorpha fruticosa.