摘要
利用典型草原牧草返青和气象要素平行观测资料分析认为,牧草返青的主要限制因子是热量条件,只有当0~30cm土壤水分总贮存量低于20mm时,水分才产生制约作用。
Using data of making observations of the herbage turning green on the typical steppe and themeteorological conditions at the same time, the main limiting factor of the herbage turning greenis heat conditions. Only when the soil water deep in 0~30cm soil is lower than 20mm, will waterproduce confining effect.
出处
《草业科学》
CAS
CSCD
北大核心
1995年第6期47-49,共3页
Pratacultural Science
关键词
草原
牧草返青
气象条件
Typical steppe, herbage turning green,meterological condition