摘要
通过大田试验,研究了地下滴灌条件下不同土壤水分控制下限对番茄生长发育以及产量、根系的影响。结果表明：只在番茄的生育阶段末期采用45%～50%田持的水分下限处理不仅能获得了最高的产量,而且水分生产率也最高,滴头附近的根密度最小,有利于减少滴头根系入侵堵塞的几率；在番茄的后3个生育阶段都控制土壤水分为45%～50%田持时,番茄产量最低,滴头附近的根密度最大；全生育期土壤水分都控制在70%～75%田持时,得到的番茄株高最高,但水分生产率最低。
The groundwater evaporation experimentation of the winter wheat and corn considering the influence of shallow groundwater is established, which is helpful for controlling of crops growth. Based on the describing of experimentation results, the quantitative growth laws responding to different shallow groundwater both for root and shoot are revealed. It is found that water table affects the growth of root remarkably stage and affects the growth of shoot during booting and grouting stage and affects plant. during tillering and jointing the evapotranspiration of the
出处
《灌溉排水学报》
CSCD
北大核心
2006年第3期17-20,共4页
Journal of Irrigation and Drainage
基金
国家自然科学基金项目(50579074)
关键词
地下滴灌
番茄
灌溉制度
产量
根系
shallow water table
groundwater evaporation
crops
growth
evapotranspiration
