在贵州中海拔地区，采用平衡施肥技术，水稻增产显著，且品质改善。
The yield and quality of rice can be improved by the balance fertilization method in middle elevation area of southwest Guizhou.
月平均的日较差沿着海拔高度变化呈“U”字形，中海拔月平均日较差值最低。
The diurnal range of temperature indicated a U-shaped pattern along the altitudinal gradient, with a lowest value at the middle elevations (about 1600 m).
对于不同生态条件而言，相同密度时低海拔地区水稻二次分蘖数最多，中海拔地区最少。
The twice tillering of rice is largest number in the low elevation areas, at least in mid-elevation areas in same density condition.
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