南方丘陵山区茶稻间作复合系统生态效应的研究

Ecological Effect of Tea-rice Intercropping Compound System in Southern Hilly Area

对皖南丘陵山区茶稻间作复合系统的生态效应进行研究。结果表明,茶稻间作复合系统叶面积指数高于单作茶园,有利于充分利用土地和光照等资源。盛夏季节水稻拔节后高度高于茶树,其遮荫作用使间作茶园茶蓬面温度比单作茶园降低2.1～2.3℃(晴天)和0.3～0.4℃(多云),光照强度降低40%以上,相对湿度增加6%～11%(晴天)和3%(多云),间作茶园每公顷土壤流失量较单作茶园减少159.5%,害虫天敌的数量增加,主要害虫的数量大幅度减少到防治标准以下,不需要施用农药。

The study on the tea-rice intercropping compound system in southern Auhui mountainous regions showed that leaf area index of this system was higher than that of the single culture tea garden, which was beneficial for the system to fully use light,soil and gas resources.Compared with single culture tea garden,in the intercropping system in mid-summer,because the ecological boundary layer was of upper rice and lower tea,the temperature decreased by 2.1～2.3(fine day) and 0.3～0.4(cloudy),the light intensity reduced by 40%,and the relative humidity increased by 6%～11% (fine day) and 3% (cloudy).In addition,the loss of water and erosion of soil was reduced and the number of the natural enemy of insect was increased.