Vietnam rice agriculture. each year there are two seasons, spring and summer-autumn and winter. depending on which local Han Chinese will appear at each moment. in northern Vietnam, in the South, drought often occurs from April 3 next year. in the Central, drought often occurs from February to July. every year there are two predictions seasons serving summer and winter-spring. factors viewed as tmax, tmin, rainfall, sunshine, wind, humidity, evaporation, soil temperature. based on a weather seasons, agricultural authorities will arrange temporary agriculture aims to achieve high productivity.
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