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一、在多雨地区,1季允许使用2次左右;在干旱地区(平均年降雨量600毫升左右,最高年份为800毫升,最低年份为300毫升),以1熟1次为
In the rainy areas, the use of 2 times is allowed in the first quarter; in the arid areas (average annual rainfall is about 600 milliliters, the highest year is 800 milliliters and the lowest year is 300 milliliters)