Anhydrous ammonia must be incorporated (and well sealed) in all crops.
Anhydrous ammonia must be incorporated (and well sealed) in all crops.
在夏季作物上施用尿素,把尿素和土壤掺混施用有好处,但在冬季作物上则不然。
Anhydrous ammonia must be incorporated (and well sealed) in all crops.
在夏季作物上施用尿素,把尿素和土壤掺混施用有好处,但在冬季作物上则不然。