东北玉米带
maize belt of Northeast China
丁二酸糯玉米淀粉酯
glutinous corn starch succinic ester
地膜玉米
Plastic-film corn
film maize
maize planting with plastic film
film covered corn
corn mulching with plastic films
Corn covering with plastic film
Mulched maize
稻田春玉米
spring maize of paday field
大蒜、玉米带田套种
garlic and corn strip planting
大麦/玉米间作
Barley-maize intercropping
春小麦/春玉米
spring wheat spring corn intercropping system