大荔县沙地造林技术试验初报

Afforestation Technology at Difficult Sites in Shayuan District of Dali County

为指导大荔县沙地造林,选择该县大荔沙苑地区4个试验点,进行了不同主栽树种(樟子松、柿树、铺地柏)和栽前苗木根系处理(蘸浆处理、GGR灌根处理、保湿袋技术)及径流集水对栽植成活率影响试验。结果表明,樟子松苗木成活率采用蘸浆处理后为87.3%,GGR灌根处理为89.1%,保湿袋技术为91.7%,径流汇集技术为85.6%;柿树苗木成活率采用蘸浆处理后为84.00%,GGR灌根处理为83.8%,保湿袋技术为90.1%,径流汇集技术为83.0%;铺地柏苗木成活率采用蘸浆处理后为80.3%,GGR灌根处理为86.0%,保湿袋技术为90.2%,径流汇集技术为91.9%,试验各处理与对照区相比,差异显著;说明蘸浆处理、GGR灌根处理、保湿袋技术和径流汇集技术对樟子松、柿树和铺地柏苗木的成活率都有促进作用。

Afforestation technology experiment with Pinus sylvestris var.,Diospyros kaki Thunb.,Juniperus procumbens Sargent at difficult sites was carried out in Shayuan district of Dali.The promotion effect of dipping treatment,GGR irrigation treatment,moisture bag technology and runoff collection technology on the survival rate of seedlings was studied.The result showed that the survival rate of Pinus sylvestris var.seedlings was 87.30%with dipping treatment,89.10%with GGR irrigation,91.70%with moisturizing bag and 85.60%with runoff collection treatment.The survival rate of persimmon seedlings was 84.00%with dipping,83.80%with GGR irrigation,90.10%with moisturizing bag and 83.00%with runoff collection.The survival rate of seedlings of Juniperus procumbens Sargent was 80.30%with dipping,86.00%with GGR irrigation,90.20%with moisturizing bag and 91.90%with runoff collection.Variance analysis showed significant differences between treatment areas and control areas.The results indicated that dipping treatment,GGR treatment,moisturizing bag technique and runoff collecting technique could promote the survival rate of Pinus sylvestris var.,Diospyros kaki Thunb.,Juniperus procumbens Sargent seedlings.