摘要
采用掺壤土、施秸秆、根下铺塑料膜、置塑料袋和聚水抗旱栽植等措施，营造了毛白杨节水灌溉栽培试验林。造林后连续５ａ的试验结果表明：掺壤土和施秸秆使土壤蓄水性和保肥性明显提高；在根下铺塑料膜可截留下渗的水分和营养物质，使土壤剖面局部水分、养分含量显著增加，聚水抗旱栽培调节了地表水聚集动态，增加了根系周围土层水分的入渗，在一定程度上提高了土壤含水量。各项措施不同程度地改善了土壤蓄水性能；使降水利用率和灌溉效率明显提高。
The experimental plantation of Populus tomentosa in combination with a number of measures: including mixing with loam, applying straw, laying plastic film under root system, using plastic bags and water accumulation method etc. The results of five years research showed that: mixing with loam and applying straw improved the capacity for water and fertility conservation, laying plastic film under root system significantly increased moisture and nutrition contents in the soil above the plastic film which intercepted the percolating water strem, and the water capturing measure regulated the accumulation and percolations of run-off and raised the soil water content to certain extent. All the measures studied improved the soil capacity for water accumulation, which significantly increased the water use efficiency and irrigation efficiency.
出处
《河北林果研究》
1997年第3期272-278,共7页
Hebei Journal of Forestry and Orchard Research
关键词
沙质土
蓄水性
保肥性
土壤含水量
杨树
sand land
water conservation
fertility conservation
soil moisture content
