摘要
以不同水分条件下盆栽苗木和大田幼林为材料，对土壤水分与毛白杨蒸腾耗水的关系进行了分析研究，并建立了蒸腾耗水量模型。结果表明，土壤水分含量与蒸腾耗水量之间呈极显著正相关，且土壤水分状况还影响蒸腾节律；蒸腾耗水量因不同的土壤水分条件、供水历程、气象等因素而具有不同的变化特点。
In this paper, the relationship between soil moisture and poplar (Populus tomentosa Carr.) water consumption quantity by transpiration was studied with potted plants and young plantations, and a model of water consumption quantity was built. The results showed that the water consumption quantity by transpiration was significantly correlated with soil moisture in a sigmoid curve. And the soil moisture also affected transpiration rhythm. The water consumption quantity varied with soil moisture, water supply course, weather and other factors, and has different variable characteristics under different conditions.
出处
《河北林果研究》
1997年第3期279-283,共5页
Hebei Journal of Forestry and Orchard Research
关键词
毛白杨
土壤水分
蒸腾
耗水量模型
Populus tomentosa
soil moisture
transpiration
water consumption model
