摘要
本文对庆阳黄土高原沟壑区苜蓿产量和微地形——微气候因子关系的研究表明,苜蓿产量受三类因子的影响。遗留性因子——生长季初期土壤水分状况;季节性因子——日照和温度;处理间因子——不同立地条件下用于蒸散的土壤水分。建立了苜蓿产量和各类因子的定量关系。
The effect of environmental characteristics:soii temperature,rainfall,soil moisture and sunshine hours on yield of alfalfa(Medicago Sativa L)was examined on 5 sites in the Qingyang region of the Loess Plateau of China (107deg 30′E,35deg 44′E)The total yield and yields at each of the seasonal harvests of alfalfa were related to site factors—soil moisture available for evapotranspiration (ET); seasonal factors——sunshine hours and soil temperature,inherent factors—initial soil moisture content.Quantitative relationships between alfalfa yields and enviromental characteristics were established.
出处
《草业科学》
CAS
CSCD
北大核心
1990年第6期10-15,共6页
Pratacultural Science
关键词
苜蓿
产量
黄土高原
微地形
微气候
alfalfa
rainfall
sunshine hours
soil moisture
soil tempcrature
