FA旱地龙
FA
FA yellow-humic acid drought resistance agent
FA handinong
FA handilong
fulvic acid
半干旱地区生态系统
Semi-arid land ecosystems
半干旱和半湿润易旱地区
the semi-arid area and semi-moist area which incline to be arid
北方旱地农业
Dry Land Agriculture in North China
风沙半干旱地区
Sandy and semi-drought area
干旱半干旱地区
Arid and semi-arid region
arid and semi-arid areas
arid and semi-arid area
Arid and semi-arid zone
arid and semi-arid regions
arid and semi arid areas
arid and semi arid regions
arid and semiarid areas
arid and semiarid area
arid and semiarid regions
dry land area
arid and semiarid areas
middle-high elevation
干旱-半干旱地区
semi-arid and semi-humid zone