苎麻生长对土壤温度的影响  

The Effect of Ramie Growth on Soil Temperature

作　　者：李京[1] 胡立勇[1] 丁树文[2] 蔡明历[1] 

机构地区：[1]华中农业大学农学系 [2]华中农业大学资源环境与农业化学系,武汉430070

出　　处：《华中农业大学学报》2000年第4期313-316,共4页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金资助项目! (编号 :499710 5 41)

摘　　要：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Study shows that ramie growing in 5～20 cm soil layer at 8∶00 am in the period from September to March of next year has certain effect on raising the soil temperature compared with bare land. The maximum value of the raised temperature can reach 1.10℃ in October while ramie has an obvious effect on the dropping of soil temperature in July and August. The dropping of temperature in 10 cm soil layer is 1.61℃ lower than in bare land. At 14∶00 pm from April to September growing ramie can reduce 3.19℃ in 5～20 cm soil layer compared to bare land. The significant discovery is that planting ramie can cut down the duration and accumulation quantity of the temperature higher than 30℃ and lower than 5℃, which has an inhibiting effect on all plant.

关 键 词：苎麻 土壤温度 生长发育 温度变化 

分 类 号：S154.4[农业科学—土壤学] S152.8[农业科学—农业基础科学]