FA旱地龙
FA yellow-humic acid drought resistance agent
FA handinong
FA
fulvic acid
FA handilong
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 semiarid areas
middle-high elevation
dry land area
arid and semiarid areas
arid and semi-arid areas
arid and semiarid area
arid and semi-arid area
arid and semi arid regions
Arid and semi-arid zone
arid and semiarid regions
arid and semi-arid regions
干旱-半干旱地区
semi-arid and semi-humid zone