不同覆盖方式对茶园土壤水分及茶叶产量的影响研究

针对贵州开阳县茶叶生长的环境特点,以5年生龙井43号绿茶为实验材料,研究不同覆盖方式对茶园土壤水分及茶叶产量的影响。结果表明:采用稻草+薄膜覆盖方式对贵州开阳县春茶的生长环境是最好方式,使得茶园土壤水分达到最高为22.87%,茶叶鲜重产量达到最高为179.88 kg/667m2。其它4种方式与清耕(CK)相比,茶叶的叶面积、茶叶的干物质量有显著提高,稻草+薄膜处理增产最高,同比增长26.92%,薄膜处理增长最低。采用稻草+薄膜覆盖是贵州喀斯特地区春季茶园提高土壤水分、增加茶叶产量的有效方式。

Effects of Different Mulching Methods on Soil Moisture and Production of Tea in Tea Garden

According to the growth environment characteristics of tea trees in the Kaiyang county, Guizhou Province, the effect of different mulching methods on soil moisture and tea yield in the tea garden was studied. As experimental materi-al, 5-year-old Longjing 43# green tea trees were used for doing comparative experiment with different mulching methods in the spring tea garden. The results showed that the best way of the growth environment for spring tea is the mulching method with rice straw + thin film in the Kaiyang. This method enabled soil moisture reach a maximum of 22. 87% and fresh weight of tea reach a maximum of 179. 88 kg/667m2 in the spring tea garden. In addition, compared with the clear tillage ( CK) method, the leaf area and the dry matter content of tea were significantly increased under the four mulching methods. The yield from the rice straw + thin film treatment was the highest, increasing by 26.92%. The yield from thin film treatment was the lowest. The rice straw+thin film mulching method could provide a way for increasing soil moisture and tea yield in the spring tea garden in Guizhou Karst area.