Unde rotation of medium rice and wheat, zinc fertilizer could be only applied on rice.
如果是中稻和小麦轮作，则可以只在水稻上施用锌肥。
Whether was potassium balance kept in purple soil cornfield ecosystem under a rotation of rice and wheat?
稻—麦轮作期紫色土农田生态系统钾素平衡状况怎样？
Potassium(K) balance in purple soil rice field ecosystem under rice-wheat rotation were studied on the National Purple Soil Fertility and Fertilizer Efficiency Monitored Base.
在国家紫色土肥力与肥料效益监测基地上，研究了稻麦轮作制度下紫色土稻田生态系统中钾素的平衡状况。
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