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。
Appropriate sowing date helped improve productivity with respect to key inputs, while appropriately delayed crop rotation was awarding to annual economic productivity of rice and wheat.
适期播种有利于提高稻麦周年的一些关键性投入的生产力，适当延迟稻麦换茬时间可以提高稻麦周年经济生产力。
The result showed that N2O and NO emissions from vegetable field and winter wheat field of rice-wheat rotation systems in southeast China had different seasonal variation rules.
结果表明，蔬菜地和华东稻麦轮作生态系统冬小麦田的NO和N_2O排放具有不同的季节变化规律。
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