摘要
采用根垫法分析杨树(刺槐)根系淋洗物对刺槐(杨树)根际微区养分迁移特性的影响,结果表明:浇刺槐根系淋洗物能提高杨树根际微区的NO3--N和NH4+-N水平,降低其N素养分亏缺率,在一定程度上缓解杨树根际微区N素缺乏状况;浇灌杨树根系淋洗物能提高刺槐根际微区的P素(尤其是非闭蓄态无机P)水平,降低其P素亏缺百分率,但效果不明显.
The influence of the root drenched solution of Populus/Robinia pseudoacacia tree species on properties of rhizosphere nutrient tmusportafion of Robinia pseudoacacia/Populus tree species was analyzed by means of root study container technique. The results showed that the concentration level of NO3^- -N and NH4^＋ -N in the rhizosphere of Populus tree species increased by watering the Populus root system with root -drenched solution of black locust tree species and the N nutrient deficit in the rhizosphere scale of poplars was somewhat reduced. Whereas, the P nutrient （especially available inorganic P） level in the rhizosphere of black locust plants was improved a little by watering the plants with root drenched solution of Populus plants, which was good to reduce P deficit for black locust trees, though the effect was not significant.
出处
《西南林学院学报》
CAS
2005年第4期75-79,共5页
Journal of Southwest Forestry College
基金
高等学校博士学科点专项科研基金资助项目(97002209)
国家自然科学基金资助项目(39870643)
关键词
根垫法
根系淋洗物
根际微区
养分亏缺
杨树
刺槐
root study container technique
drenched solution of root system
rhizosphere
nutrient deficit
Populus
Robinia pseudoacacia
