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研究表明 ,苎麻生长改变了 5～ 2 0cm土层的温度状况 ,缩小了不同季节的最高与最低温度值的变幅。苎麻地在 9月至次年 3月的早晨 8∶0 0 ,5～ 2 0cm土层均具有升温效应 ,1 0月升温最高达 1 .1 0℃ ;7～ 8月则有较强的降温效应 ,8月 1 0cm土层降温最多 ,为 1 .6 1℃。在下午 1 4∶0 0 ,4～ 9月苎麻地小区 5～ 2 0cm土层表现显著的降温效应 ,高温的 8月 1 0cm土层的降温值平均高达 3.1 9℃。苎麻地具有减少一年中土壤高于 30℃和低于5℃温度的天数和累积量
The results showed that the ramie growth changed the temperature of 5 ~ 20 cm soil layer and reduced the amplitude of maximum and minimum temperature in different seasons. Ramie in the morning of September to March of the next morning 8: 00, 5 ~ 20cm soil layer have a warming effect, the highest temperature in January up to 1.10 ℃; July to August there is a strong cooling Effect, August 10cm soil layer cooling the most, was 1.61 ℃. At 14:04 in the afternoon, from April to September, the soil temperature of 5 ~ 20 cm in ramie plot showed a significant cooling effect, and the average cooling temperature in August of 10 cm soil layer reached as high as 3.1 9 ℃ in August. Ramie has to reduce the number of days and accumulations of soils that are above 30 ° C and below 5 ° C in one year